2019-05-13  Michael Catanzaro  <mcatanzaro@igalia.com>

        Unreviewed, fix unused variable warnings in release builds

        * wtf/URLHelpers.cpp:
        (WTF::URLHelpers::escapeUnsafeCharacters):

2019-05-12  Yusuke Suzuki  <ysuzuki@apple.com>

        [JSC] Compress Watchpoint size by using enum type and Packed<> data structure
        https://bugs.webkit.org/show_bug.cgi?id=197730

        Reviewed by Filip Pizlo.

        This patch introduces a new data structures, WTF::Packed, WTF::PackedPtr, and WTF::PackedAlignedPtr.

        - WTF::Packed

            WTF::Packed is data storage. We can read and write trivial (in C++ term [1]) data to this storage. The difference to
            the usual storage is that the alignment of this storage is always 1. We access the underlying data by using unalignedLoad/unalignedStore.
            This class offers alignment = 1 data structure instead of missing the following characteristics.

                1. Load / Store are non atomic even if the data size is within a pointer width. We should not use this for a member which can be accessed
                   in a racy way. (e.g. fields accessed optimistically from the concurrent compilers).

                2. We cannot take reference / pointer to the underlying storage since they are unaligned.

                3. Access to this storage is unaligned access. The code is using memcpy, and the compiler will convert to an appropriate unaligned access
                   in certain architectures (x86_64 / ARM64). It could be slow. So use it for non performance sensitive & memory sensitive places.

        - WTF::PackedPtr

            WTF::PackedPtr is a specialization of WTF::Packed<T*>. And it is basically WTF::PackedAlignedPtr with alignment = 1. We further compact
            the pointer by leveraging the platform specific knowledge. In 64bit architectures, the effective width of pointers are less than 64 bit.
            In x86_64, it is 48 bits. And Darwin ARM64 is further smaller, 36 bits. This information allows us to compact the pointer to 6 bytes in
            x86_64 and 5 bytes in Darwin ARM64.

        - WTF::PackedAlignedPtr

            WTF::PackedAlignedPtr is the WTF::PackedPtr with alignment information of the T. If we use this alignment information, we could reduce the
            size of packed pointer further in some cases. For example, since we guarantee that JSCells are 16 byte aligned, low 4 bits are empty. Leveraging
            this information in Darwin ARM64 platform allows us to make packed JSCell pointer 4 bytes (36 - 4 bits). We do not use passed alignment
            information if it is not profitable.

        We also have PackedPtrTraits. This is new PtrTraits and use it for various data structures such as Bag<>.

        [1]: https://en.cppreference.com/w/cpp/types/is_trivial

        * WTF.xcodeproj/project.pbxproj:
        * wtf/Bag.h:
        (WTF::Bag::clear):
        (WTF::Bag::iterator::operator++):
        * wtf/CMakeLists.txt:
        * wtf/DumbPtrTraits.h:
        * wtf/DumbValueTraits.h:
        * wtf/MathExtras.h:
        (WTF::clzConstexpr):
        (WTF::clz):
        (WTF::ctzConstexpr):
        (WTF::ctz):
        (WTF::getLSBSetConstexpr):
        (WTF::getMSBSetConstexpr):
        * wtf/Packed.h: Added.
        (WTF::Packed::Packed):
        (WTF::Packed::get const):
        (WTF::Packed::set):
        (WTF::Packed::operator=):
        (WTF::Packed::exchange):
        (WTF::Packed::swap):
        (WTF::alignof):
        (WTF::PackedPtrTraits::exchange):
        (WTF::PackedPtrTraits::swap):
        (WTF::PackedPtrTraits::unwrap):
        * wtf/Platform.h:
        * wtf/SentinelLinkedList.h:
        (WTF::BasicRawSentinelNode::BasicRawSentinelNode):
        (WTF::BasicRawSentinelNode::prev):
        (WTF::BasicRawSentinelNode::next):
        (WTF::PtrTraits>::remove):
        (WTF::PtrTraits>::prepend):
        (WTF::PtrTraits>::append):
        (WTF::RawNode>::SentinelLinkedList):
        (WTF::RawNode>::remove):
        (WTF::BasicRawSentinelNode<T>::remove): Deleted.
        (WTF::BasicRawSentinelNode<T>::prepend): Deleted.
        (WTF::BasicRawSentinelNode<T>::append): Deleted.
        * wtf/StdLibExtras.h:
        (WTF::roundUpToMultipleOfImpl):
        (WTF::roundUpToMultipleOfImpl0): Deleted.
        * wtf/UnalignedAccess.h:
        (WTF::unalignedLoad):
        (WTF::unalignedStore):

2019-05-10  Saam barati  <sbarati@apple.com>

        Bag's move operator= leaks memory
        https://bugs.webkit.org/show_bug.cgi?id=197757

        Reviewed by Keith Miller.

        It was unused. So I'm just removing it. We can implement it properly
        if we ever need it.

        * wtf/Bag.h:
        (WTF::Bag::operator=): Deleted.

2019-05-10  Fujii Hironori  <Hironori.Fujii@sony.com>

        [WinCairo] storage/indexeddb tests are timing out
        https://bugs.webkit.org/show_bug.cgi?id=196289

        Reviewed by Alex Christensen.

        * wtf/FileSystem.h: Added hardLink.
        * wtf/glib/FileSystemGlib.cpp:
        (WTF::FileSystemImpl::hardLink):
        (WTF::FileSystemImpl::hardLinkOrCopyFile):
        * wtf/posix/FileSystemPOSIX.cpp:
        (WTF::FileSystemImpl::hardLink):
        (WTF::FileSystemImpl::hardLinkOrCopyFile):
        * wtf/win/FileSystemWin.cpp:
        (WTF::FileSystemImpl::hardLink):
        (WTF::FileSystemImpl::hardLinkOrCopyFile):
        Added hardLink. Let hardLinkOrCopyFile use the hardLink.

2019-05-10  Yusuke Suzuki  <ysuzuki@apple.com>

        [WTF] Remove "private:" from Noncopyable and Nonmovable macros
        https://bugs.webkit.org/show_bug.cgi?id=197767

        Reviewed by Saam Barati.

        We no longer need "private:".

        * wtf/Noncopyable.h:
        * wtf/Nonmovable.h:

2019-05-08  Zan Dobersek  <zdobersek@igalia.com>

        [GLib] Rework WPE RunLoopSourcePriority values
        https://bugs.webkit.org/show_bug.cgi?id=197167

        Reviewed by Carlos Garcia Campos.

        The GLib priorities for the WPE port were initially aligned on the -70
        value, theory being that this would help avoid any default-priority
        GSources spawned in different dependency libraries affecting our
        scheduling. Today it seems that extra caution might not be really
        necessary.

        This change aligns the base priority value with GLib's default priority
        value of 0. We maintain the relativity of priority values by effectively
        increasing each priority by 70.

        * wtf/glib/RunLoopSourcePriority.h:

2019-05-08  Alex Christensen  <achristensen@webkit.org>

        Add SPI to set HSTS storage directory
        https://bugs.webkit.org/show_bug.cgi?id=197259

        Reviewed by Brady Eidson.

        * wtf/Platform.h:

2019-05-08  Keith Miller  <keith_miller@apple.com>

        Remove Gigacage from arm64 and use PAC for arm64e instead
        https://bugs.webkit.org/show_bug.cgi?id=197110

        Reviewed by Saam Barati.

        This patch changes the Gigacage to use PAC on arm64e. As part of
        this process all platforms must provide their length when
        materializing the caged pointer. Since it would be somewhat
        confusing to have two parameters for an operator [] those methods
        have been removed. Lastly, this patch removes the specializations
        for void* caged pointers, instead opting to use enable_if on the
        methods that would normally fail on void* e.g. anything that
        returns a T&.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/CagedPtr.h:
        (WTF::CagedPtr::CagedPtr):
        (WTF::CagedPtr::get const):
        (WTF::CagedPtr::getMayBeNull const):
        (WTF::CagedPtr::getUnsafe const):
        (WTF::CagedPtr::at const):
        (WTF::CagedPtr::reauthenticate):
        (WTF::CagedPtr::operator=):
        (WTF::CagedPtr::operator== const):
        (WTF::CagedPtr::operator bool const):
        (WTF::CagedPtr::operator* const): Deleted.
        (WTF::CagedPtr::operator-> const): Deleted.
        (WTF::CagedPtr::operator[] const): Deleted.
        (): Deleted.
        * wtf/CagedUniquePtr.h:
        (WTF::CagedUniquePtr::CagedUniquePtr):
        (WTF::CagedUniquePtr::create):
        (WTF::CagedUniquePtr::~CagedUniquePtr):
        (WTF::CagedUniquePtr::destroy):
        (): Deleted.
        * wtf/Gigacage.h:
        (Gigacage::cagedMayBeNull):
        * wtf/PtrTag.h:
        (WTF::tagArrayPtr):
        (WTF::untagArrayPtr):
        (WTF::removeArrayPtrTag):
        (WTF::retagArrayPtr):
        * wtf/TaggedArrayStoragePtr.h: Copied from Source/JavaScriptCore/runtime/ArrayBufferView.cpp.
        (WTF::TaggedArrayStoragePtr::TaggedArrayStoragePtr):
        (WTF::TaggedArrayStoragePtr::get const):
        (WTF::TaggedArrayStoragePtr::getUnsafe const):
        (WTF::TaggedArrayStoragePtr::resize):
        (WTF::TaggedArrayStoragePtr::operator bool const):

2019-05-08  Robin Morisset  <rmorisset@apple.com>

        WTF::TimingScope should show the total duration and not just the mean
        https://bugs.webkit.org/show_bug.cgi?id=197672

        Reviewed by Alex Christensen.

        * wtf/TimingScope.cpp:
        (WTF::TimingScope::scopeDidEnd):

2019-05-07  Yusuke Suzuki  <ysuzuki@apple.com>

        [JSC] LLIntPrototypeLoadAdaptiveStructureWatchpoint does not require Bag<>
        https://bugs.webkit.org/show_bug.cgi?id=197645

        Reviewed by Saam Barati.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/Nonmovable.h: Copied from Source/JavaScriptCore/bytecode/LLIntPrototypeLoadAdaptiveStructureWatchpoint.h.
        * wtf/Vector.h:
        (WTF::minCapacity>::uncheckedConstructAndAppend):

2019-05-07  Eric Carlson  <eric.carlson@apple.com>

        Define media buffering policy
        https://bugs.webkit.org/show_bug.cgi?id=196979
        <rdar://problem/28383861>

        Reviewed by Jer Noble.

        * wtf/Platform.h:

2019-05-07  Robin Morisset  <rmorisset@apple.com>

        WTF::BitVector should have an isEmpty() method
        https://bugs.webkit.org/show_bug.cgi?id=197637

        Reviewed by Keith Miller.

        * wtf/BitVector.cpp:
        (WTF::BitVector::isEmptySlow const):
        * wtf/BitVector.h:
        (WTF::BitVector::isEmpty const):

2019-05-07  Brent Fulgham  <bfulgham@apple.com>

        Correct JSON parser to address unterminated escape character
        https://bugs.webkit.org/show_bug.cgi?id=197582
        <rdar://problem/50459177>

        Reviewed by Alex Christensen.

        Correct JSON parser code to properly deal with unterminated escape
        characters.

        * wtf/JSONValues.cpp:
        (WTF::JSONImpl::decodeString):
        (WTF::JSONImpl::parseStringToken):

2019-05-07  Alex Christensen  <achristensen@webkit.org>

        Add a release assertion that Functions can only be constructed from non-null CompletionHandlers
        https://bugs.webkit.org/show_bug.cgi?id=197641

        Reviewed by Chris Dumez.

        This will help us find the cause of rdar://problem/48679972 by seeing the crash when the Function is dispatched,
        not when it's called with no interesting stack trace.  I manually verified this assertion is hit in such a case.
        We should also have no legitimate use of creating a Function out of a null CompletionHandler then never calling it.

        * wtf/CompletionHandler.h:
        (WTF::Detail::CallableWrapper<CompletionHandler<Out):
        * wtf/Function.h:
        (WTF::Detail::CallableWrapperBase::~CallableWrapperBase):
        (WTF::Detail::CallableWrapper::CallableWrapper):
        (WTF::Function<Out):

2019-05-06  Christopher Reid  <chris.reid@sony.com>

        [JSC] Respect already defined USE_LLINT_EMBEDDED_OPCODE_ID compiler variable.
        https://bugs.webkit.org/show_bug.cgi?id=197633

        Reviewed by Don Olmstead.

        When the variable `USE_LLINT_EMBEDDED_OPCODE_ID` is defined, stop defining
        its value with platform default one.

        * wtf/Platform.h:

2019-05-03  Sihui Liu  <sihui_liu@apple.com>

        Add assertion to check whether shm files have maximum FileProtection of CompleteUnlessOpen
        https://bugs.webkit.org/show_bug.cgi?id=197390
        <rdar://problem/42685773>

        Reviewed by Geoffrey Garen.

        * wtf/FileSystem.cpp:
        (WTF::FileSystemImpl::isSafeToUseMemoryMapForPath):
        (WTF::FileSystemImpl::makeSafeToUseMemoryMapForPath):
        * wtf/FileSystem.h:
        * wtf/cocoa/FileSystemCocoa.mm:
        (WTF::FileSystemImpl::isSafeToUseMemoryMapForPath):
        (WTF::FileSystemImpl::makeSafeToUseMemoryMapForPath):

2019-05-03  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r244881.
        https://bugs.webkit.org/show_bug.cgi?id=197559

        Breaks compilation of jsconly on linux, breaking compilation
        for jsc-i386-ews, jsc-mips-ews and jsc-armv7-ews (Requested by
        guijemont on #webkit).

        Reverted changeset:

        "[CMake] Refactor WEBKIT_MAKE_FORWARDING_HEADERS into
        WEBKIT_COPY_FILES"
        https://bugs.webkit.org/show_bug.cgi?id=197174
        https://trac.webkit.org/changeset/244881

2019-05-02  Alex Christensen  <achristensen@webkit.org>

        Mark U+01C0 as a homograph of U+006C
        https://bugs.webkit.org/show_bug.cgi?id=197526
        <rdar://problem/50301904>

        Reviewed by Tim Horton.

        * wtf/URLHelpers.cpp:
        (WTF::URLHelpers::isLookalikeCharacter):

2019-05-02  Don Olmstead  <don.olmstead@sony.com>

        [CMake] Refactor WEBKIT_MAKE_FORWARDING_HEADERS into WEBKIT_COPY_FILES
        https://bugs.webkit.org/show_bug.cgi?id=197174

        Reviewed by Alex Christensen.

        Replace WEBKIT_MAKE_FORWARDING_HEADERS with WEBKIT_COPY_FILES.

        * wtf/CMakeLists.txt:

2019-05-01  Darin Adler  <darin@apple.com>

        WebKit has too much of its own UTF-8 code and should rely more on ICU's UTF-8 support
        https://bugs.webkit.org/show_bug.cgi?id=195535

        Reviewed by Alexey Proskuryakov.

        * wtf/text/AtomicString.cpp:
        (WTF::AtomicString::fromUTF8Internal): Added code to compute string length when the
        end is nullptr; this behavior used to be implemented inside the
        calculateStringHashAndLengthFromUTF8MaskingTop8Bits function.

        * wtf/text/AtomicStringImpl.cpp:
        (WTF::HashAndUTF8CharactersTranslator::translate): Updated for change to
        convertUTF8ToUTF16.

        * wtf/text/AtomicStringImpl.h: Took the WTF_EXPORT_PRIVATE off of the
        AtomicStringImpl::addUTF8 function. This is used only inside a non-inlined function in
        the AtomicString class and its behavior changed subtly in this patch; it's helpful
        to document that it's not exported.

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::utf8Impl): Don't pass "true" for strictness to convertUTF16ToUTF8
        since strict is the default. Also updated for changes to ConversionResult.
        (WTF::StringImpl::utf8ForCharacters): Updated for change to convertLatin1ToUTF8.
        (WTF::StringImpl::tryGetUtf8ForRange const): Ditto.

        * wtf/text/StringView.cpp: Removed uneeded include of UTF8Conversion.h.

        * wtf/text/WTFString.cpp:
        (WTF::String::fromUTF8): Updated for change to convertUTF8ToUTF16.

        * wtf/unicode/UTF8Conversion.cpp:
        (WTF::Unicode::inlineUTF8SequenceLengthNonASCII): Deleted.
        (WTF::Unicode::inlineUTF8SequenceLength): Deleted.
        (WTF::Unicode::UTF8SequenceLength): Deleted.
        (WTF::Unicode::decodeUTF8Sequence): Deleted.
        (WTF::Unicode::convertLatin1ToUTF8): Use U8_APPEND, enabling us to remove
        almost everything in the function. Also changed resturn value to be a boolean
        to indicate success since there is only one possible failure (target exhausted).
        There is room for further simplification, since most callers have lengths rather
        than end pointers for the source buffer, and all but one caller supplies a buffer
        size known to be sufficient, so those don't need a return value, nor do they need
        to pass an end of buffer pointer.
        (WTF::Unicode::convertUTF16ToUTF8): Use U_IS_LEAD, U_IS_TRAIL,
        U16_GET_SUPPLEMENTARY, U_IS_SURROGATE, and U8_APPEND. Also changed behavior
        for non-strict mode so that unpaired surrogates will be turned into the
        replacement character instead of invalid UTF-8 sequences, because U8_APPEND
        won't create an invalid UTF-8 sequence, and because we don't need to do that
        for any good reason at any call site.
        (WTF::Unicode::isLegalUTF8): Deleted.
        (WTF::Unicode::readUTF8Sequence): Deleted.
        (WTF::Unicode::convertUTF8ToUTF16): Use U8_NEXT instead of
        inlineUTF8SequenceLength, isLegalUTF8, and readUTF8Sequence. Use
        U16_APPEND instead of lots of code that does the same thing. There is
        room for further simplification since most callers don't need the "all ASCII"
        feature and could probably pass the arguments in a more natural way.
        (WTF::Unicode::calculateStringHashAndLengthFromUTF8MaskingTop8Bits):
        Use U8_NEXT instead of isLegalUTF8, readUTF8Sequence, and various
        error handling checks for things that are handled by U8_NEXT. Also removed
        support for passing nullptr for end to specify a null-terminated string.
        (WTF::Unicode::equalUTF16WithUTF8): Ditto.

        * wtf/unicode/UTF8Conversion.h: Removed UTF8SequenceLength and
        decodeUTF8Sequence. Changed the ConversionResult to match WebKit coding
        style, with an eye toward perhaps removing it in the future. Changed
        the convertUTF8ToUTF16 return value to a boolean and removed the "strict"
        argument since no caller was passing false. Changed the convertLatin1ToUTF8
        return value to a boolean. Tweaked comments.

2019-05-01  Shawn Roberts  <sroberts@apple.com>

        Unreviewed, rolling out r244821.

        Causing

        Reverted changeset:

        "WebKit has too much of its own UTF-8 code and should rely
        more on ICU's UTF-8 support"
        https://bugs.webkit.org/show_bug.cgi?id=195535
        https://trac.webkit.org/changeset/244821

2019-05-01  Shawn Roberts  <sroberts@apple.com>

        Unreviewed, rolling out r244822.

        Causing 4 Test262 failures on JSC Release and Debug

        Reverted changeset:

        https://trac.webkit.org/changeset/244822 https://trac.webkit.org/changeset/244821

2019-04-29  Darin Adler  <darin@apple.com>

        WebKit has too much of its own UTF-8 code and should rely more on ICU's UTF-8 support
        https://bugs.webkit.org/show_bug.cgi?id=195535

        Reviewed by Alexey Proskuryakov.

        * wtf/text/AtomicString.cpp:
        (WTF::AtomicString::fromUTF8Internal): Added code to compute string length when the
        end is nullptr; this behavior used to be implemented inside the
        calculateStringHashAndLengthFromUTF8MaskingTop8Bits function.

        * wtf/text/AtomicStringImpl.cpp:
        (WTF::HashAndUTF8CharactersTranslator::translate): Updated for change to
        convertUTF8ToUTF16.

        * wtf/text/AtomicStringImpl.h: Took the WTF_EXPORT_PRIVATE off of the
        AtomicStringImpl::addUTF8 function. This is used only inside a non-inlined function in
        the AtomicString class and its behavior changed subtly in this patch; it's helpful
        to document that it's not exported.

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::utf8Impl): Don't pass "true" for strictness to convertUTF16ToUTF8
        since strict is the default. Also updated for changes to ConversionResult.
        (WTF::StringImpl::utf8ForCharacters): Updated for change to convertLatin1ToUTF8.
        (WTF::StringImpl::tryGetUtf8ForRange const): Ditto.

        * wtf/text/StringView.cpp: Removed uneeded include of UTF8Conversion.h.

        * wtf/text/WTFString.cpp:
        (WTF::String::fromUTF8): Updated for change to convertUTF8ToUTF16.

        * wtf/unicode/UTF8Conversion.cpp:
        (WTF::Unicode::inlineUTF8SequenceLengthNonASCII): Deleted.
        (WTF::Unicode::inlineUTF8SequenceLength): Deleted.
        (WTF::Unicode::UTF8SequenceLength): Deleted.
        (WTF::Unicode::decodeUTF8Sequence): Deleted.
        (WTF::Unicode::convertLatin1ToUTF8): Use U8_APPEND, enabling us to remove
        almost everything in the function. Also changed resturn value to be a boolean
        to indicate success since there is only one possible failure (target exhausted).
        There is room for further simplification, since most callers have lengths rather
        than end pointers for the source buffer, and all but one caller supplies a buffer
        size known to be sufficient, so those don't need a return value, nor do they need
        to pass an end of buffer pointer.
        (WTF::Unicode::convertUTF16ToUTF8): Use U_IS_LEAD, U_IS_TRAIL,
        U16_GET_SUPPLEMENTARY, U_IS_SURROGATE, and U8_APPEND. Also changed behavior
        for non-strict mode so that unpaired surrogates will be turned into the
        replacement character instead of invalid UTF-8 sequences, because U8_APPEND
        won't create an invalid UTF-8 sequence, and because we don't need to do that
        for any good reason at any call site.
        (WTF::Unicode::isLegalUTF8): Deleted.
        (WTF::Unicode::readUTF8Sequence): Deleted.
        (WTF::Unicode::convertUTF8ToUTF16): Use U8_NEXT instead of
        inlineUTF8SequenceLength, isLegalUTF8, and readUTF8Sequence. Use
        U16_APPEND instead of lots of code that does the same thing. There is
        room for further simplification since most callers don't need the "all ASCII"
        feature and could probably pass the arguments in a more natural way.
        (WTF::Unicode::calculateStringHashAndLengthFromUTF8MaskingTop8Bits):
        Use U8_NEXT instead of isLegalUTF8, readUTF8Sequence, and various
        error handling checks for things that are handled by U8_NEXT. Also removed
        support for passing nullptr for end to specify a null-terminated string.
        (WTF::Unicode::equalUTF16WithUTF8): Ditto.

        * wtf/unicode/UTF8Conversion.h: Removed UTF8SequenceLength and
        decodeUTF8Sequence. Changed the ConversionResult to match WebKit coding
        style, with an eye toward perhaps removing it in the future. Changed
        the convertUTF8ToUTF16 return value to a boolean and removed the "strict"
        argument since no caller was passing false. Changed the convertLatin1ToUTF8
        return value to a boolean. Tweaked comments.

2019-04-30  John Wilander  <wilander@apple.com>

        Add logging of Ad Click Attribution errors and events to a dedicated channel
        https://bugs.webkit.org/show_bug.cgi?id=197332
        <rdar://problem/49918800>

        Reviewed by Youenn Fablet.

        Added missing RELEASE_LOG_INFO and RELEASE_LOG_INFO_IF dummies
        for RELEASE_LOG_DISABLED.

        * wtf/Assertions.h:

2019-04-30  Youenn Fablet  <youenn@apple.com>

        Make Document audio producers use WeakPtr
        https://bugs.webkit.org/show_bug.cgi?id=197382

        Reviewed by Eric Carlson.

        * wtf/WeakHashSet.h:
        (WTF::WeakHashSet::hasNullReferences const):

2019-04-30  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r244773.
        https://bugs.webkit.org/show_bug.cgi?id=197436

        Causing assertion failures on debug queues (Requested by
        ShawnRoberts on #webkit).

        Reverted changeset:

        "Make Document audio producers use WeakPtr"
        https://bugs.webkit.org/show_bug.cgi?id=197382
        https://trac.webkit.org/changeset/244773

2019-04-30  Youenn Fablet  <youenn@apple.com>

        Make Document audio producers use WeakPtr
        https://bugs.webkit.org/show_bug.cgi?id=197382

        Reviewed by Eric Carlson.

        * wtf/WeakHashSet.h:
        (WTF::WeakHashSet::hasNullReferences const):

2019-04-29  Alex Christensen  <achristensen@webkit.org>

        <rdar://problem/50299396> Fix internal High Sierra build
        https://bugs.webkit.org/show_bug.cgi?id=197388

        * Configurations/Base.xcconfig:

2019-04-29  Yusuke Suzuki  <ysuzuki@apple.com>

        JITStubRoutineSet wastes 180KB of HashTable capacity on can.com
        https://bugs.webkit.org/show_bug.cgi?id=186732

        Reviewed by Saam Barati.

        * wtf/Range.h:
        (WTF::Range::contains const):

2019-04-29  Basuke Suzuki  <Basuke.Suzuki@sony.com>

        [Win] Add flag to enable version information stamping and disable by default.
        https://bugs.webkit.org/show_bug.cgi?id=197249
        <rdar://problem/50224412>

        Reviewed by Ross Kirsling.

        This feature is only used in AppleWin port. Add flag for this task and make it OFF by default.
        Then enable it by default on AppleWin.

        * wtf/CMakeLists.txt:

2019-04-26  Don Olmstead  <don.olmstead@sony.com>

        Add WTF::findIgnoringASCIICaseWithoutLength to replace strcasestr
        https://bugs.webkit.org/show_bug.cgi?id=197291

        Reviewed by Konstantin Tokarev.

        Adds an implementation of strcasestr within WTF.

        * wtf/text/StringCommon.h:
        (WTF::findIgnoringASCIICaseWithoutLength):

2019-04-26  Sihui Liu  <sihui_liu@apple.com>

        Stop IDB transactions to release locked database files when network process is ready to suspend
        https://bugs.webkit.org/show_bug.cgi?id=196372
        <rdar://problem/48930116>

        Reviewed by Brady Eidson.

        Provide a method to suspend the thread and block main thread until the thread is suspended.

        * wtf/CrossThreadTaskHandler.cpp:
        (WTF::CrossThreadTaskHandler::taskRunLoop):
        (WTF::CrossThreadTaskHandler::suspendAndWait):
        (WTF::CrossThreadTaskHandler::resume):
        * wtf/CrossThreadTaskHandler.h:

2019-04-25  Fujii Hironori  <Hironori.Fujii@sony.com>

        Unreviewed, rolling out r244669.

        Windows ports can't clean build.

        Reverted changeset:

        "[Win] Add flag to enable version information stamping and
        disable by default."
        https://bugs.webkit.org/show_bug.cgi?id=197249
        https://trac.webkit.org/changeset/244669

2019-04-25  Basuke Suzuki  <Basuke.Suzuki@sony.com>

        [Win] Add flag to enable version information stamping and disable by default.
        https://bugs.webkit.org/show_bug.cgi?id=197249

        Reviewed by Ross Kirsling.

        This feature is only used in AppleWin port. Add flag for this task and make it OFF by default.
        Then enable it by default on AppleWin.

        * wtf/CMakeLists.txt:

2019-04-25  Timothy Hatcher  <timothy@apple.com>

        Disable date and time inputs on iOSMac.
        https://bugs.webkit.org/show_bug.cgi?id=197287
        rdar://problem/46794376

        Reviewed by Wenson Hsieh.

        * wtf/FeatureDefines.h:

2019-04-25  Alex Christensen  <achristensen@webkit.org>

        Fix High Sierra build after r244653
        https://bugs.webkit.org/show_bug.cgi?id=197131

        * wtf/StdLibExtras.h:
        High Sierra thinks __cplusplus is 201406 even when using C++17.
        Removing the __cplusplus check resolves the build failure on High Sierra.
        We can clean up StdLibExtras more later.

2019-04-25  Alex Christensen  <achristensen@webkit.org>

        Start using C++17
        https://bugs.webkit.org/show_bug.cgi?id=197131

        Reviewed by Darin Adler.

        * Configurations/Base.xcconfig:
        * wtf/CMakeLists.txt:
        * wtf/Variant.h:
        (WTF::switchOn):

2019-04-25  Alex Christensen  <achristensen@webkit.org>

        Remove DeprecatedOptional
        https://bugs.webkit.org/show_bug.cgi?id=197161

        Reviewed by Darin Adler.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/DeprecatedOptional.h: Removed.

2019-04-24  Carlos Garcia Campos  <cgarcia@igalia.com>

        [GTK] Hardcoded text color in input fields
        https://bugs.webkit.org/show_bug.cgi?id=126907

        Reviewed by Michael Catanzaro.

        Define HAVE_OS_DARK_MODE_SUPPORT for GTK port.

        * wtf/Platform.h:

2019-04-24  Tim Horton  <timothy_horton@apple.com>

        Clean up WKActionSheetAssistant's use of LaunchServices
        https://bugs.webkit.org/show_bug.cgi?id=194645
        <rdar://problem/47707952>

        Reviewed by Andy Estes.

        * wtf/Platform.h:

2019-04-24  chris fleizach  <cfleizach@apple.com>

        AX: Remove deprecated Accessibility Object Model events
        https://bugs.webkit.org/show_bug.cgi?id=197073
        <rdar://problem/50027819>

        Reviewed by Ryosuke Niwa.

        * wtf/Platform.h:

2019-04-23  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r244558.
        https://bugs.webkit.org/show_bug.cgi?id=197219

        Causing crashes on iOS Sim Release and Debug (Requested by
        ShawnRoberts on #webkit).

        Reverted changeset:

        "Remove DeprecatedOptional"
        https://bugs.webkit.org/show_bug.cgi?id=197161
        https://trac.webkit.org/changeset/244558

2019-04-23  Alex Christensen  <achristensen@webkit.org>

        Remove DeprecatedOptional
        https://bugs.webkit.org/show_bug.cgi?id=197161

        Reviewed by Darin Adler.

        This was added in r209326 to be compatible with a shipping version of Safari.
        We have released several versions of Safari since then, so do what the comments say and remove it.
        The existence of this std::optional makes migrating to C++17 harder, and there's no reason to keep it.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/DeprecatedOptional.h: Removed.

2019-04-21  Zan Dobersek  <zdobersek@igalia.com>

        [WTF] Generic memoryFootprint() implementation should use bmalloc on Linux
        https://bugs.webkit.org/show_bug.cgi?id=196963

        Reviewed by Don Olmstead.

        Have the generic memoryFootprint() implementation use bmalloc's
        memoryFootprint() API on Linux, whenever the system malloc option is
        not enabled. Limitation to Linux platforms is due to the bmalloc
        implementation being limited to those configurations (excluding iOS
        which doesn't use MemoryFootprintGeneric.cpp).

        * wtf/PlatformWPE.cmake: Switch to building MemoryFootprintGeneric.cpp.
        * wtf/generic/MemoryFootprintGeneric.cpp:
        (WTF::memoryFootprint):

2019-04-19  Ryosuke Niwa  <rniwa@webkit.org>

        HashTable::removeIf always shrinks the hash table by half even if there is nothing left
        https://bugs.webkit.org/show_bug.cgi?id=196681
        <rdar://problem/49917764>

        Reviewed by Darin Adler.

        Address Darin's comments by removing the explicit type from std::max.

        * wtf/HashTable.h:
        (WTF::KeyTraits>::computeBestTableSize):
        (WTF::KeyTraits>::shrinkToBestSize):

2019-04-18  Chris Dumez  <cdumez@apple.com>

        [iOS] Improve detection of when web views go to background / foreground
        https://bugs.webkit.org/show_bug.cgi?id=197035
        <rdar://problem/45281182>

        Reviewed by Tim Horton.

        Add build time flag.

        * wtf/FeatureDefines.h:

2019-04-18  Jer Noble  <jer.noble@apple.com>

        Add support for parsing FairPlayStreaming PSSH boxes.
        https://bugs.webkit.org/show_bug.cgi?id=197064

        Reviewed by Eric Carlson.

        * wtf/Platform.h:

2019-04-18  Yusuke Suzuki  <ysuzuki@apple.com>

        [WTF] StringBuilder should set correct m_is8Bit flag when merging
        https://bugs.webkit.org/show_bug.cgi?id=197053

        Reviewed by Saam Barati.

        When appending StringBuilder to the other StringBuilder, we have a path that does not set m_is8Bit flag correctly.
        This patch correctly sets this flag. And we also change 0 to nullptr when we are using 0 as a pointer.

        * wtf/text/StringBuilder.cpp:
        (WTF::StringBuilder::reserveCapacity):
        (WTF::StringBuilder::appendUninitializedSlow):
        (WTF::StringBuilder::append):
        * wtf/text/StringBuilder.h:
        (WTF::StringBuilder::append):
        (WTF::StringBuilder::characters8 const):
        (WTF::StringBuilder::characters16 const):
        (WTF::StringBuilder::clear):

2019-04-17  Tim Horton  <timothy_horton@apple.com>

        Adopt different scroll view flashing SPI
        https://bugs.webkit.org/show_bug.cgi?id=197043
        <rdar://problem/49996476>

        Reviewed by Wenson Hsieh.

        * wtf/Platform.h:

2019-04-17  Jer Noble  <jer.noble@apple.com>

        Enable HAVE_AVFOUNDATION_VIDEO_OUTPUT on PLATFORM(IOSMAC)
        https://bugs.webkit.org/show_bug.cgi?id=196994
        <rdar://problem/44158331>

        Reviewed by Alex Christensen.

        * wtf/Platform.h:

2019-04-16  Stephan Szabo  <stephan.szabo@sony.com>

        [PlayStation] Update port for system library changes
        https://bugs.webkit.org/show_bug.cgi?id=196978

        Reviewed by Ross Kirsling.

        * wtf/PlatformPlayStation.cmake:
        Remove reference to deleted system library

2019-04-16  Jer Noble  <jer.noble@apple.com>

        Enable HAVE_AVKIT on PLATFORM(IOSMAC)
        https://bugs.webkit.org/show_bug.cgi?id=196987

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2019-04-16  Robin Morisset  <rmorisset@apple.com>

        [WTF] holdLock should be marked WARN_UNUSED_RETURN
        https://bugs.webkit.org/show_bug.cgi?id=196922

        Reviewed by Keith Miller.

        * wtf/Locker.h:

2019-04-16  Don Olmstead  <don.olmstead@sony.com>

        [CMake] Set WTF_SCRIPTS_DIR
        https://bugs.webkit.org/show_bug.cgi?id=196917

        Reviewed by Konstantin Tokarev.

        Use WTF_SCRIPTS_DIR for copying the unified sources script.

        * wtf/CMakeLists.txt:

2019-04-15  Myles C. Maxfield  <mmaxfield@apple.com>

        [Cocoa] FontPlatformData objects aren't cached at all when using font-family:system-ui
        https://bugs.webkit.org/show_bug.cgi?id=196846
        <rdar://problem/49499971>

        Reviewed by Simon Fraser and Darin Adler.

        * wtf/RetainPtr.h:
        (WTF::safeCFEqual):
        (WTF::safeCFHash):

2019-04-12  Ryosuke Niwa  <rniwa@webkit.org>

        HashTable::removeIf always shrinks the hash table by half even if there is nothing left
        https://bugs.webkit.org/show_bug.cgi?id=196681

        Reviewed by Darin Adler.

        Made HashTable::removeIf shrink to the "best size", which is the least power of two bigger
        than twice the key count as already used in the copy constructor.

        * wtf/HashTable.h:
        (WTF::HashTable::computeBestTableSize): Extracted from the copy constructor.
        (WTF::HashTable::shrinkToBestSize): Added.
        (WTF::HashTable::removeIf): Use shrinkToBestSize instead of shrink.
        (WTF::HashTable::HashTable):

2019-04-12  Eric Carlson  <eric.carlson@apple.com>

        Update AudioSession route sharing policy
        https://bugs.webkit.org/show_bug.cgi?id=196776
        <rdar://problem/46501611>

        Reviewed by Jer Noble.

        * wtf/Platform.h: Define HAVE_ROUTE_SHARING_POLICY_LONG_FORM_VIDEO.

2019-04-10  Said Abou-Hallawa  <sabouhallawa@apple.com>

        requestAnimationFrame should execute before the next frame
        https://bugs.webkit.org/show_bug.cgi?id=177484

        Reviewed by Simon Fraser.

        Add trace points for the page RenderingUpdate.

        * wtf/SystemTracing.h:

2019-04-10  Claudio Saavedra  <csaavedra@igalia.com>

        Do not generate empty unified sources when unified builds are disabled
        https://bugs.webkit.org/show_bug.cgi?id=196767

        Reviewed by Konstantin Tokarev.

        If unified builds are disabled, the ruby script to generate them
        is still used to list the sources that need to be
        compiled. Currently, the script always generates bundled unified
        sources, even if it's being used just to list all the sources. So
        when the unified builds are disabled and no files are going to be
        bundled, the script generates one empty file per bundle manager
        (that is, one C++ and one ObjectiveC), that gets added to the
        sources to be compiled.

        * Scripts/generate-unified-source-bundles.rb: Only go through the
        bundle managers file generation when not running in
        PrintAllSources mode, to avoid generating empty bundle files.

2019-04-10  Enrique Ocaña González  <eocanha@igalia.com>

        [WPE] Avoid async IO starving timers
        https://bugs.webkit.org/show_bug.cgi?id=196733

        Reviewed by Carlos Garcia Campos.

        If AsyncIONetwork and DiskCacheRead priorities are higher than
        MainThreadSharedTimer the timers get starved. This causes the NetworkProcess
        to accumulate MB of data instead of handing it down to the WebProcess (done
        using a Timer). This eventually causes an Out Of Memory kill on the
        NetworkProcess on some embedded platforms with low memory limits.

        This patch levels the three priorities to the same value, while still leaving
        DiskCacheWrite with less priority than DiskCacheRead.

        * wtf/glib/RunLoopSourcePriority.h: Changed RunLoopSourcePriority values for WPE.

2019-04-09  Don Olmstead  <don.olmstead@sony.com>

        [CMake] WTF derived sources should only be referenced inside WTF
        https://bugs.webkit.org/show_bug.cgi?id=196706

        Reviewed by Konstantin Tokarev.

        Use ${WTF_DERIVED_SOURCES_DIR} instead of ${DERIVED_SOURCES_DIR} within WTF.

        * wtf/CMakeLists.txt:
        * wtf/PlatformJSCOnly.cmake:
        * wtf/PlatformMac.cmake:

2019-04-09  Don Olmstead  <don.olmstead@sony.com>

        [CMake] Apple builds should use ICU_INCLUDE_DIRS
        https://bugs.webkit.org/show_bug.cgi?id=196720

        Reviewed by Konstantin Tokarev.

        Copy ICU headers for Apple builds into ICU_INCLUDE_DIRS.

        * CMakeLists.txt:
        * wtf/PlatformMac.cmake:

2019-04-08  Don Olmstead  <don.olmstead@sony.com>

        [CMake][WinCairo] Separate copied headers into different directories
        https://bugs.webkit.org/show_bug.cgi?id=196655

        Reviewed by Michael Catanzaro.

        * wtf/CMakeLists.txt:

2019-04-08  Guillaume Emont  <guijemont@igalia.com>

        Enable DFG on MIPS
        https://bugs.webkit.org/show_bug.cgi?id=196689

        Reviewed by Žan Doberšek.

        Since the bytecode change, we enabled the baseline JIT on mips in
        r240432, but DFG is still missing. With this change, all tests are
        passing on a ci20 board.

        * wtf/Platform.h: Enable DFG on MIPS by default.

2019-04-06  Ryosuke Niwa  <rniwa@webkit.org>

        Added tests for WeakHashSet::computesEmpty and WeakHashSet::computeSize
        https://bugs.webkit.org/show_bug.cgi?id=196669

        Reviewed by Geoffrey Garen.

        Removed the superflous type names from forward declarations, and made WeakHashSet::add
        take a const object to match other container types in WTF.

        * wtf/WeakHashSet.h:
        (WTF::WeakHashSet::add):
        * wtf/WeakPtr.h:

2019-04-05  Ryosuke Niwa  <rniwa@webkit.org>

        Make WeakPtr<Element> possible and deploy it in form associated elements code
        https://bugs.webkit.org/show_bug.cgi?id=196626

        Reviewed by Antti Koivisto.

        Make it possible to call WeakHashSet::remove and WeakHashSet::contains with
        a subclass type U of a type T used to define WeakReference<T>.

        Also added computesEmpty, which is slightly more efficient than computeSize
        when m_set is either empty or when there are non-released weak references in the set.

        * wtf/WeakHashSet.h:
        (WTF::WeakHashSet::remove):
        (WTF::WeakHashSet::contains const):
        (WTF::WeakHashSet::computesEmpty const): Added.
        * wtf/WeakPtr.h: Added an explicit forward declaration of WeakHashSet to avoid
        build failures in GTK+ and WPE ports.

2019-04-05  Eric Carlson  <eric.carlson@apple.com>

        Remove AUDIO_TOOLBOX_AUDIO_SESSION
        https://bugs.webkit.org/show_bug.cgi?id=196653
        <rdar://problem/49652098>

        Reviewed by Jer Noble.

        * wtf/Platform.h:

2019-04-05  Michael Catanzaro  <mcatanzaro@igalia.com>

        Unreviewed manual rollout of r243929
        https://bugs.webkit.org/show_bug.cgi?id=196626

        * wtf/WeakHashSet.h:
        (WTF::WeakHashSet::remove):
        (WTF::WeakHashSet::contains const):
        (WTF::WeakHashSet::computesEmpty const): Deleted.

2019-04-05  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r243833.
        https://bugs.webkit.org/show_bug.cgi?id=196645

        This change breaks build of WPE and GTK ports (Requested by
        annulen on #webkit).

        Reverted changeset:

        "[CMake][WTF] Mirror XCode header directories"
        https://bugs.webkit.org/show_bug.cgi?id=191662
        https://trac.webkit.org/changeset/243833

2019-04-05  Ryosuke Niwa  <rniwa@webkit.org>

        Make WeakPtr<Element> possible and deploy it in form associated elements code
        https://bugs.webkit.org/show_bug.cgi?id=196626

        Reviewed by Antti Koivisto.

        Make it possible to call WeakHashSet::remove and WeakHashSet::contains with
        a subclass type U of a type T used to define WeakReference<T>.

        Also added computesEmpty, which is slightly more efficient than computeSize
        when m_set is either empty or when there are non-released weak references in the set.

        * wtf/WeakHashSet.h:
        (WTF::WeakHashSet::remove):
        (WTF::WeakHashSet::contains const):
        (WTF::WeakHashSet::computesEmpty const): Added.

2019-04-04  Yusuke Suzuki  <ysuzuki@apple.com>

        [WebCore] Put most of derived classes of ScriptWrappable into IsoHeap
        https://bugs.webkit.org/show_bug.cgi?id=196475

        Reviewed by Saam Barati.

        * wtf/ForbidHeapAllocation.h:
        * wtf/IsoMalloc.h:
        * wtf/IsoMallocInlines.h:

2019-04-03  Don Olmstead  <don.olmstead@sony.com>

        [CMake][WTF] Mirror XCode header directories
        https://bugs.webkit.org/show_bug.cgi?id=191662

        Reviewed by Konstantin Tokarev.

        Rename WTF forwarding header target to WTFFramework and update the install location
        to WTF_FRAMEWORK_HEADERS_DIR.

        * wtf/CMakeLists.txt:

2019-04-03  Joseph Pecoraro  <pecoraro@apple.com>

        Web Inspector: Remote Inspector indicate callback should always happen on the main thread
        https://bugs.webkit.org/show_bug.cgi?id=196513
        <rdar://problem/49498284>

        Reviewed by Devin Rousso.

        * wtf/MainThread.h:
        * wtf/cocoa/MainThreadCocoa.mm:
        (WTF::dispatchAsyncOnMainThreadWithWebThreadLockIfNeeded):
        * wtf/ios/WebCoreThread.cpp:
        * wtf/ios/WebCoreThread.h:

2019-04-02  Keith Rollin  <krollin@apple.com>

        Inhibit CFNetwork logging in private sessions
        https://bugs.webkit.org/show_bug.cgi?id=196268
        <rdar://problem/48210793>

        Fix a conditional in Platform.h where IOS should have been used
        instead of IOS_FAMILY. The latter happened to work, but we really want
        to be using the proper symbol here.

        Reviewed by Alexey Proskuryakov.

        * wtf/Platform.h:

2019-04-01  Michael Catanzaro  <mcatanzaro@igalia.com>

        Stop trying to support building JSC with clang 3.8
        https://bugs.webkit.org/show_bug.cgi?id=195947
        <rdar://problem/49069219>

        Reviewed by Darin Adler.

        It seems WebKit hasn't built with clang 3.8 in a while, no devs are using this compiler, we
        don't know how much effort it would be to make JSC work again, and it's making the code
        worse. Remove my hacks to support clang 3.8 from WTF.

        * wtf/MetaAllocator.cpp:
        (WTF::MetaAllocator::allocate):
        * wtf/text/StringConcatenate.h:
        (WTF::tryMakeStringFromAdapters):

2019-03-31  Yusuke Suzuki  <ysuzuki@apple.com>

        [JSC] Butterfly allocation from LargeAllocation should try "realloc" behavior if collector thread is not active
        https://bugs.webkit.org/show_bug.cgi?id=196160

        Reviewed by Saam Barati.

        * wtf/FastMalloc.h:
        (WTF::FastMalloc::tryRealloc):
        * wtf/Gigacage.cpp:
        (Gigacage::tryRealloc):
        * wtf/Gigacage.h:

2019-03-31  Andy Estes  <aestes@apple.com>

        [iOS] WebKit should consult the navigation response policy delegate before previewing a QuickLook document
        https://bugs.webkit.org/show_bug.cgi?id=196433
        <rdar://problem/49293305>

        Reviewed by Tim Horton.

        * wtf/NeverDestroyed.h:
        (WTF::NeverDestroyed::operator->):
        (WTF::NeverDestroyed::operator-> const):

2019-03-28  Fujii Hironori  <Hironori.Fujii@sony.com>

        Unreviewed build fix.

        * wtf/CMakeLists.txt: Added SpanningTree.h to WTF_PUBLIC_HEADERS.

2019-03-28  Saam Barati  <sbarati@apple.com>

        BackwardsGraph needs to consider back edges as the backward's root successor
        https://bugs.webkit.org/show_bug.cgi?id=195991

        Reviewed by Filip Pizlo.

        Previously, our backwards graph analysis was slightly wrong. The idea of
        backwards graph is that the root of the graph has edges to terminals in
        the original graph. And then the original directed edges in the graph are flipped.
        
        However, we weren't considering loops as a form of terminality. For example,
        we wouldn't consider an infinite loop as a terminal. So there were no edges
        from the root to a node in the infinite loop. This lead us to make mistakes
        when we used backwards dominators to compute control flow equivalence.
        
        This is better understood in an example:
        
        ```
        preheader:
        while (1) {
            if (!isCell(v))
                continue;
            load structure ID
            if (cond)
               continue;
            return
        }
        ```
        
        In the previous version of this algorithm, the only edge from the backwards
        root would be to the block containing the return. This would lead us to
        believe that the loading of the structureID backwards dominates the preheader,
        leading us to believe it's control flow equivalent to preheader. This is
        obviously wrong, since we can loop forever if "v" isn't a cell.
        
        The solution here is to treat any backedge in the graph as a "terminal" node.
        Since a backedge implies the existence of a loop.
        
        In the above example, the backwards root now has an edge to both blocks with
        "continue". This prevents us from falsely claiming that the return is control
        flow equivalent with the preheader.
        
        This patch uses DFS spanning trees to compute back edges. An edge
        u->v is a back edge when u is a descendent of v in the DFS spanning
        tree of the Graph.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/BackwardsGraph.h:
        (WTF::BackwardsGraph::BackwardsGraph):
        * wtf/SpanningTree.h: Added.
        (SpanningTree::SpanningTree):
        (SpanningTree::isDescendent):

2019-03-28  Tim Horton  <timothy_horton@apple.com>

        Un-fix the build

        * wtf/Platform.h:
        It is no longer necessary to exclude this from PLATFORM(IOSMAC).

2019-03-27  Per Arne Vollan  <pvollan@apple.com>

        Layout Test js/math-clz32.html is failing
        https://bugs.webkit.org/show_bug.cgi?id=196209

        Reviewed by Ross Kirsling.

        Use the correct number of loop iterations when counting leading zeros. Also, the
        count was off by one for the Win64 case.

        * wtf/MathExtras.h:
        (WTF::clz):

2019-03-26  Keith Rollin  <krollin@apple.com>

        Inhibit CFNetwork logging in private sessions
        https://bugs.webkit.org/show_bug.cgi?id=196268
        <rdar://problem/48210793>

        Reviewed by Alex Christensen.

        Before performing any logging, the NetworkProcess checks to see if
        it's performing an operation associated with a private (ephemeral)
        browsing session. If so, it skips the logging. However, networking
        layers below the NetworkProcess don't know about private browsing, so
        they would still perform their own logging. CFNetwork now has a flag
        that lets us control that, so set it to False if private browsing.

        * wtf/Platform.h:

2019-03-25  Alex Christensen  <achristensen@webkit.org>

        Expected shouldn't assume its contained types are copyable
        https://bugs.webkit.org/show_bug.cgi?id=195986

        Reviewed by JF Bastien.

        * wtf/Expected.h:
        (std::experimental::fundamentals_v3::__expected_detail::constexpr_base::constexpr_base):
        (std::experimental::fundamentals_v3::operator==):
        (std::experimental::fundamentals_v3::operator!=):
        * wtf/Unexpected.h:
        (std::experimental::fundamentals_v3::unexpected::unexpected):

2019-03-24  Keith Miller  <keith_miller@apple.com>

        Unreviewed, forgot to refactor variable name for windows build in
        r243418.

        * wtf/MathExtras.h:
        (WTF::clz):
        (WTF::ctz):

2019-03-24  Andy Estes  <aestes@apple.com>

        [watchOS] Remove unused Proximity Networking code
        https://bugs.webkit.org/show_bug.cgi?id=196188

        Reviewed by Tim Horton.

        * wtf/FeatureDefines.h:

2019-03-23  Keith Miller  <keith_miller@apple.com>

        Refactor clz/ctz and fix getLSBSet.
        https://bugs.webkit.org/show_bug.cgi?id=196162

        Reviewed by Saam Barati.

        This patch makes clz32/64 and ctz32 generic so they work on any
        numeric type. Since these methods work on any type we don't need
        to have a separate implementation of getLSBSet, which also
        happened to be getMSBSet. This patch also adds getMSBSet as there
        may be users who want that in the future.

        * wtf/MathExtras.h:
        (WTF::clz):
        (WTF::ctz):
        (WTF::getLSBSet):
        (WTF::getMSBSet):
        (getLSBSet): Deleted.
        (WTF::clz32): Deleted.
        (WTF::clz64): Deleted.
        (WTF::ctz32): Deleted.

2019-03-22  Keith Rollin  <krollin@apple.com>

        Enable ThinLTO support in Production builds
        https://bugs.webkit.org/show_bug.cgi?id=190758
        <rdar://problem/45413233>

        Reviewed by Daniel Bates.

        Enable building with Thin LTO in Production when using Xcode 10.2 or
        later. This change results in a 1.45% progression in PLT5. Full
        Production build times increase about 2-3%. Incremental build times
        are more severely affected, and so LTO is not enabled for local
        engineering builds.

        LTO is enabled only on macOS for now, until rdar://problem/49013399,
        which affects ARM builds, is fixed.

        To change the LTO setting when building locally:

        - If building with `make`, specify WK_LTO_MODE={none,thin,full} on the
          command line.
        - If building with `build-webkit`, specify --lto-mode={none,thin,full}
          on the command line.
        - If building with `build-root`, specify --lto={none,thin,full} on the
          command line.
        - If building with Xcode, create a LocalOverrides.xcconfig file at the
          top level of your repository directory (if needed) and define
          WK_LTO_MODE to full, thin, or none.

        * Configurations/Base.xcconfig:

2019-03-22  Tim Horton  <timothy_horton@apple.com>

        Fix the build after r243354

        * wtf/Platform.h:

2019-03-22  Tim Horton  <timothy_horton@apple.com>

        Fix the build after r243354
        https://bugs.webkit.org/show_bug.cgi?id=196138
        <rdar://problem/49145951>

        * wtf/Platform.h:

2019-03-21  Eric Carlson  <eric.carlson@apple.com>

        Add UI process WebRTC runtime logging.
        https://bugs.webkit.org/show_bug.cgi?id=196020
        <rdar://problem/49071443>

        Reviewed by Youenn Fablet.

        * wtf/Logger.h:
        (WTF::LogArgument::toString): Add long long and unsigned long long variants.

2019-03-20  Simon Fraser  <simon.fraser@apple.com>

        Rename ENABLE_ACCELERATED_OVERFLOW_SCROLLING macro to ENABLE_OVERFLOW_SCROLLING_TOUCH
        https://bugs.webkit.org/show_bug.cgi?id=196049

        Reviewed by Tim Horton.

        This macro is about the -webkit-overflow-scrolling CSS property, not accelerated
        overflow scrolling in general, so rename it.

        * wtf/FeatureDefines.h:

2019-03-20  Mark Lam  <mark.lam@apple.com>

        Open source arm64e code.
        https://bugs.webkit.org/show_bug.cgi?id=196012
        <rdar://problem/49066237>

        Reviewed by Keith Miller.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/BlockPtr.h:
        * wtf/Platform.h:
        * wtf/PlatformRegisters.cpp: Added.
        (WTF::threadStateLRInternal):
        (WTF::threadStatePCInternal):
        * wtf/PlatformRegisters.h:
        * wtf/PointerPreparations.h:
        * wtf/PtrTag.cpp: Added.
        (WTF::tagForPtr):
        (WTF::ptrTagName):
        (WTF::registerPtrTagLookup):
        (WTF::reportBadTag):
        * wtf/PtrTag.h:
        (WTF::removeCodePtrTag):
        (WTF::tagCodePtrImpl):
        (WTF::tagCodePtr):
        (WTF::untagCodePtrImplHelper):
        (WTF::untagCodePtrImpl):
        (WTF::untagCodePtr):
        (WTF::retagCodePtrImplHelper):
        (WTF::retagCodePtrImpl):
        (WTF::retagCodePtr):
        (WTF::tagCFunctionPtrImpl):
        (WTF::tagCFunctionPtr):
        (WTF::untagCFunctionPtrImpl):
        (WTF::untagCFunctionPtr):
        (WTF::tagInt):
        (WTF::assertIsCFunctionPtr):
        (WTF::assertIsNullOrCFunctionPtr):
        (WTF::assertIsNotTagged):
        (WTF::assertIsTagged):
        (WTF::assertIsNullOrTagged):
        (WTF::isTaggedWith):
        (WTF::assertIsTaggedWith):
        (WTF::assertIsNullOrTaggedWith):
        (WTF::usesPointerTagging):
        (WTF::registerPtrTagLookup):
        (WTF::reportBadTag):
        (WTF::tagForPtr): Deleted.

2019-03-20  Keith Rollin  <krollin@apple.com>

        Update checks that determine if WebKit is system WebKit
        https://bugs.webkit.org/show_bug.cgi?id=195756

        Reviewed by Alexey Proskuryakov.

        The system WebKit can be installed in additional locations, so check
        for and allow those, too.

        * wtf/Platform.h:

2019-03-20  Michael Catanzaro  <mcatanzaro@igalia.com>

        Unreviewed, further attempt to fix clang 3.8 build
        https://bugs.webkit.org/show_bug.cgi?id=195947

        * wtf/MetaAllocator.cpp:
        (WTF::MetaAllocator::allocate):

2019-03-20  Michael Catanzaro  <mcatanzaro@igalia.com>

        REGRESSION(r243115) breaks build for clang 3.8
        https://bugs.webkit.org/show_bug.cgi?id=195947

        Reviewed by Chris Dumez.

        * wtf/text/StringConcatenate.h:
        (WTF::tryMakeStringFromAdapters):

2019-03-20  Tim Horton  <timothy_horton@apple.com>

        Add an platform-driven spell-checking mechanism
        https://bugs.webkit.org/show_bug.cgi?id=195795

        Reviewed by Ryosuke Niwa.

        * wtf/Platform.h:
        Add an ENABLE flag.

2019-03-19  Michael Catanzaro  <mcatanzaro@igalia.com>

        Build cleanly with GCC 9
        https://bugs.webkit.org/show_bug.cgi?id=195920

        Reviewed by Chris Dumez.

        WebKit triggers three new GCC 9 warnings:

        """
        -Wdeprecated-copy, implied by -Wextra, warns about the C++11 deprecation of implicitly
        declared copy constructor and assignment operator if one of them is user-provided.
        """

        Solution is to either add a copy constructor or copy assignment operator, if required, or
        else remove one if it is redundant.

        """
        -Wredundant-move, implied by -Wextra, warns about redundant calls to std::move.
        -Wpessimizing-move, implied by -Wall, warns when a call to std::move prevents copy elision.
        """

        These account for most of this patch. Solution is to just remove the bad WTFMove().

        Additionally, -Wclass-memaccess has been enhanced to catch a few cases that GCC 8 didn't.
        These are solved by casting nontrivial types to void* before using memcpy. (Of course, it
        would be safer to not use memcpy on nontrivial types, but that's too complex for this
        patch. Searching for memcpy used with static_cast<void*> will reveal other cases to fix.)

        * wtf/CheckedArithmetic.h:
        (WTF::Checked::Checked):
        * wtf/MetaAllocator.cpp:
        (WTF::MetaAllocator::allocate):
        * wtf/URLParser.cpp:
        (WTF::CodePointIterator::operator!= const):
        (WTF::CodePointIterator::operator=): Deleted.
        * wtf/text/StringView.h:
        (WTF::StringView::CodePoints::Iterator::operator=): Deleted.

2019-03-19  Alex Christensen  <achristensen@webkit.org>

        Make WTFLogChannelState and WTFLogLevel enum classes
        https://bugs.webkit.org/show_bug.cgi?id=195904

        Reviewed by Eric Carlson.

        * wtf/Assertions.cpp:
        * wtf/Assertions.h:
        * wtf/Logger.h:
        (WTF::Logger::logAlways const):
        (WTF::Logger::error const):
        (WTF::Logger::warning const):
        (WTF::Logger::info const):
        (WTF::Logger::debug const):
        (WTF::Logger::willLog const):
        (WTF::Logger::log):
        * wtf/MemoryPressureHandler.cpp:
        * wtf/RefCountedLeakCounter.cpp:

2019-03-19  Michael Catanzaro  <mcatanzaro@igalia.com>

        Unreviewed, rolling out r243132.

        Broke GTK build

        Reverted changeset:

        "Make WTFLogChannelState and WTFLogLevel enum classes"
        https://bugs.webkit.org/show_bug.cgi?id=195904
        https://trac.webkit.org/changeset/243132

2019-03-18  Alex Christensen  <achristensen@webkit.org>

        Make WTFLogChannelState and WTFLogLevel enum classes
        https://bugs.webkit.org/show_bug.cgi?id=195904

        Reviewed by Eric Carlson.

        * wtf/Assertions.cpp:
        * wtf/Assertions.h:
        * wtf/Logger.h:
        (WTF::Logger::logAlways const):
        (WTF::Logger::error const):
        (WTF::Logger::warning const):
        (WTF::Logger::info const):
        (WTF::Logger::debug const):
        (WTF::Logger::willLog const):
        (WTF::Logger::log):
        * wtf/MemoryPressureHandler.cpp:
        * wtf/RefCountedLeakCounter.cpp:

2019-03-18  Darin Adler  <darin@apple.com>

        Cut down on use of StringBuffer, possibly leading toward removing it entirely
        https://bugs.webkit.org/show_bug.cgi?id=195870

        Reviewed by Daniel Bates.

        * wtf/URL.cpp: Remove a now-inaccurate comment mentioning StringBuffer.

        * wtf/text/StringView.cpp:
        (WTF::convertASCIICase): Use createUninitialized instead of StringBuffer.

2019-03-18  Xan Lopez  <xan@igalia.com>

        [WTF] Remove redundant std::move in StringConcatenate
        https://bugs.webkit.org/show_bug.cgi?id=195798

        Reviewed by Darin Adler.

        Remove redundant calls to WTFMove in return values for this
        method. C++ will already do an implicit move here since we are
        returning a local value where copy/move elision is not applicable.

        * wtf/text/StringConcatenate.h:
        (WTF::tryMakeStringFromAdapters):

2019-03-16  Darin Adler  <darin@apple.com>

        Improve normalization code, including moving from unorm.h to unorm2.h
        https://bugs.webkit.org/show_bug.cgi?id=195330

        Reviewed by Michael Catanzaro.

        * wtf/URLHelpers.cpp: Removed unneeded include of unorm.h since the
        normalization code is now in StringView.cpp.
        (WTF::URLHelpers::escapeUnsafeCharacters): Renamed from
        createStringWithEscapedUnsafeCharacters since it now only creates
        a new string if one is needed. Use unsigned for string lengths, since
        that's what WTF::String uses, not size_t. Added a first loop so that
        we can return the string unmodified if no lookalike characters are
        found. Removed unnecessary round trip from UTF-16 and then back in
        the case where the character is not a lookalike.
        (WTF::URLHelpers::toNormalizationFormC): Deleted. Moved this logic
        into the WTF::normalizedNFC function in StringView.cpp.
        (WTF::URLHelpers::userVisibleURL): Call escapeUnsafeCharacters and
        normalizedNFC. The normalizedNFC function is better in multiple ways,
        but primarily it handles 8-bit strings and other already-normalized
        strings much more efficiently.

        * wtf/text/StringView.cpp:
        (WTF::normalizedNFC): Added. This has two overloads. One is for when
        we already have a String, and want to re-use it if no normalization
        is needed, and another is when we only have a StringView, and may need
        to allocate a String to hold the result. Includes a fast special case
        for 8-bit and already-normalized strings, and uses the same strategy
        that JSC::normalize was already using: calls unorm2_normalize twice,
        first just to determine the length.

        * wtf/text/StringView.h: Added normalizedNFC, which can be called with
        either a StringView or a String. Also moved StringViewWithUnderlyingString
        here from JSString.h, here for use as the return value of normalizedNFC;
        it is used for a similar purpose in the JavaScriptCore rope implementation.
        Also removed an inaccurate comment.

2019-03-16  Diego Pino Garcia  <dpino@igalia.com>

        [GTK] [WPE] Fix compilation errors due to undefined ALWAYS_LOG_IF
        https://bugs.webkit.org/show_bug.cgi?id=195850

        Unreviewed build fix after r243033. 

        * wtf/LoggerHelper.h:

2019-03-15  Per Arne Vollan  <pvollan@apple.com>

        [iOS] Block the accessibility server when accessibility is not enabled.
        https://bugs.webkit.org/show_bug.cgi?id=195342

        Reviewed by Brent Fulgham.

        Add SPI to issue a mach extension to a process by pid. Also, add a macro for
        the availability of this SPI.

        * wtf/Platform.h:
        * wtf/spi/darwin/SandboxSPI.h:

2019-03-15  Eric Carlson  <eric.carlson@apple.com>

        Add media stream release logging
        https://bugs.webkit.org/show_bug.cgi?id=195823

        Reviewed by Youenn Fablet.

        * wtf/LoggerHelper.h: Add LOG_IF variants that check a condition before logging.

2019-03-15  Truitt Savell  <tsavell@apple.com>

        Unreviewed, rolling out r243008.

        This revision broke High Sierra builders

        Reverted changeset:

        "[iOS] Block the accessibility server when accessibility is
        not enabled."
        https://bugs.webkit.org/show_bug.cgi?id=195342
        https://trac.webkit.org/changeset/243008

2019-03-15  Per Arne Vollan  <pvollan@apple.com>

        [iOS] Block the accessibility server when accessibility is not enabled.
        https://bugs.webkit.org/show_bug.cgi?id=195342

        Reviewed by Brent Fulgham.

        Add SPI to issue a mach extension to a process by pid.

        * wtf/spi/darwin/SandboxSPI.h:

2019-03-13  Sam Weinig  <sam@webkit.org>

        Add utility function to allow easy reverse range-based iteration of a container
        https://bugs.webkit.org/show_bug.cgi?id=195542

        Reviewed by Antti Koivisto.

        Add functions to create an IteratorRange<T> that will iterate a container backwards. It
        works with any container that is compatible with std::rbegin() and std::rend(). It is
        expected to be used in conjunction with range-based for-loops like so:

        for (auto& value : WTF::makeReversedRange(myContainer)) 
            ...

        * wtf/IteratorRange.h:
        (WTF::makeReversedRange):

2019-03-13  Keith Rollin  <krollin@apple.com>

        Add support for new StagedFrameworks layout
        https://bugs.webkit.org/show_bug.cgi?id=195543

        Reviewed by Alexey Proskuryakov.

        Opportunistic cleanup: remove unused JAVASCRIPTCORE_FRAMEWORKS_DIR
        variable.

        * Configurations/Base.xcconfig:

2019-03-13  Dominik Infuehr  <dinfuehr@igalia.com>

        String overflow when using StringBuilder in JSC::createError
        https://bugs.webkit.org/show_bug.cgi?id=194957

        Reviewed by Mark Lam.

        When calculating the new capacity of a StringBuilder object,
        use a limit of MaxLength instead of MaxLength+1.  Allocating
        a string of size MaxLength+1 always fails. This means that expanding
        a StringBuilder only worked when the newly doubled capacity is less or
        equal to MaxLength.

        * wtf/text/StringBuilder.cpp:

2019-03-13  Chris Dumez  <cdumez@apple.com>

        Better build fix after r242901.

        Reviewed by Jer Noble.

        * wtf/Logger.h:
        (WTF::LogArgument::toString):

2019-03-13  Jer Noble  <jer.noble@apple.com>

        Add AggregateLogger, a Logger specialization for singleton classes.
        https://bugs.webkit.org/show_bug.cgi?id=195644

        Reviewed by Eric Carlson.

        Add a new class, AggregateLogger, which will log messages to each of its aggregated loggers.

        Drive-by fixes: allow "const void*" to be directly logged by converting the pointer to a hex string.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/AggregateLogger.h: Added.
        (WTF::AggregateLogger::create):
        (WTF::AggregateLogger::addLogger):
        (WTF::AggregateLogger::removeLogger):
        (WTF::AggregateLogger::logAlways const):
        (WTF::AggregateLogger::error const):
        (WTF::AggregateLogger::warning const):
        (WTF::AggregateLogger::info const):
        (WTF::AggregateLogger::debug const):
        (WTF::AggregateLogger::willLog const):
        (WTF::AggregateLogger::AggregateLogger):
        (WTF::AggregateLogger::log const):
        * wtf/CMakeLists.h:
        * wtf/Logger.cpp:
        (WTF::>::toString):
        * wtf/Logger.h:

2019-03-12  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r242747.
        https://bugs.webkit.org/show_bug.cgi?id=195641

        Performance measurement is difficult in this period, rolling
        out it and rolling in later to isolate it from the other
        sensitive patches (Requested by yusukesuzuki on #webkit).

        Reverted changeset:

        "[JSC] Make StaticStringImpl & StaticSymbolImpl actually
        static"
        https://bugs.webkit.org/show_bug.cgi?id=194212
        https://trac.webkit.org/changeset/242747

2019-03-12  Robin Morisset  <rmorisset@apple.com>

        A lot more classes have padding that can be reduced by reordering their fields
        https://bugs.webkit.org/show_bug.cgi?id=195579

        Reviewed by Mark Lam.

        * wtf/CrossThreadQueue.h:
        * wtf/Logger.h:
        * wtf/MemoryPressureHandler.h:
        * wtf/MetaAllocator.h:
        * wtf/Threading.cpp:

2019-03-11  Alex Christensen  <achristensen@webkit.org>

        WTF::Expected should use std::addressof instead of operator&
        https://bugs.webkit.org/show_bug.cgi?id=195604

        Reviewed by Myles Maxfield.

        The latter was causing problems with types that do tricky things with constructors and operator&,
        specifically UniqueRef but I made a reduced test case.  When it used operator&, it would get the contained
        type and call the constructor that takes a contained type instead of the move constructor.

        * wtf/Expected.h:
        (std::experimental::fundamentals_v3::__expected_detail::base::base):
        (std::experimental::fundamentals_v3::expected::swap):

2019-03-11  Ross Kirsling  <ross.kirsling@sony.com>

        Add Optional to Forward.h.
        https://bugs.webkit.org/show_bug.cgi?id=195586

        Reviewed by Darin Adler.

        * wtf/Forward.h:
        Add forward declaration for Optional.

        * wtf/CPUTime.h:
        * wtf/Expected.h:
        * wtf/MainThread.h:
        * wtf/MemoryFootprint.h:
        * wtf/URLHelpers.cpp:
        * wtf/URLHelpers.h:
        * wtf/cocoa/CPUTimeCocoa.cpp:
        * wtf/fuchsia/CPUTimeFuchsia.cpp:
        * wtf/unix/CPUTimeUnix.cpp:
        * wtf/win/CPUTimeWin.cpp:
        Remove unnecessary includes from headers.

2019-03-11  Andy Estes  <aestes@apple.com>

        [Apple Pay] Use PKPaymentAuthorizationController to present the Apple Pay UI remotely from the Networking service on iOS
        https://bugs.webkit.org/show_bug.cgi?id=195530
        <rdar://problem/48747164>

        Reviewed by Alex Christensen.

        * wtf/FeatureDefines.h: Defined ENABLE_APPLE_PAY_REMOTE_UI.

2019-03-11  Yusuke Suzuki  <ysuzuki@apple.com>

        [JSC] Make StaticStringImpl & StaticSymbolImpl actually static
        https://bugs.webkit.org/show_bug.cgi?id=194212

        Reviewed by Mark Lam.

        Avoid mutation onto refcounts if `isStatic()` returns true so that the content of StaticStringImpl never gets modified.

        * wtf/text/StringImpl.h:
        (WTF::StringImpl::ref):
        (WTF::StringImpl::deref):

2019-03-11  Sihui Liu  <sihui_liu@apple.com>

        Crash under WebCore::IDBDatabase::connectionToServerLost
        https://bugs.webkit.org/show_bug.cgi?id=195563
        <rdar://problem/37193655>

        CrossThreadTask should protect callee if it is ThreadSafeRefCounted.

        Reviewed by Geoffrey Garen.

        * wtf/CrossThreadTask.h:
        (WTF::createCrossThreadTask):

2019-03-11  Ryan Haddad  <ryanhaddad@apple.com>

        Unreviewed, rolling out r242688, r242643, r242624.

        Caused multiple layout test failures and crashes on iOS and macOS.

        Reverted changeset:

        "requestAnimationFrame should execute before the next frame"
        https://bugs.webkit.org/show_bug.cgi?id=177484
        https://trac.webkit.org/changeset/242624/webkit

        * wtf/SystemTracing.h:

2019-03-11  Darin Adler  <darin@apple.com>

        Specify fixed precision explicitly to prepare to change String::number and StringBuilder::appendNumber floating point behavior
        https://bugs.webkit.org/show_bug.cgi?id=195533

        Reviewed by Brent Fulgham.

        Soon, we will change String::number and StringBuilder::appendNumber for floating
        point to use "shortest form" serialization instead of the current default, which is
        "6-digit fixed precision stripping trailing zeros". To prepare to do this safely
        without accidentally changing any behavior, changing callers to call the explicit
        versions. Later, we may want to return and change many of them to use shortest form
        instead, but that may require rebaselining tests, and in some extreme cases, getting
        rid of flawed logic that converts between different single and double precision
        floating point; such problems may be hidden by fixed precision serialization.

        Since "shortest form" is already the behavior for AtomicString::number and
        for makeString, no changes required for clients of either of those.

        * wtf/Logger.h:
        (WTF::LogArgument::toString): Use numberToStringFixedPrecision.
        * wtf/MediaTime.cpp:
        (WTF::MediaTime::toString const): Use appendFixedPrecisionNumber.
        * wtf/text/ValueToString.h:
        (WTF::ValueToString<float>::string): Use numberToStringFixedPrecision.
        (WTF::ValueToString<double>::string): Ditto.

2019-03-11  Truitt Savell  <tsavell@apple.com>

        Unreviewed, rolling out r242702.

        Broke High Sierra builders.

        Reverted changeset:

        "Add utility function to allow easy reverse range-based
        iteration of a container"
        https://bugs.webkit.org/show_bug.cgi?id=195542
        https://trac.webkit.org/changeset/242702

2019-03-11  Sam Weinig  <sam@webkit.org>

        Add utility function to allow easy reverse range-based iteration of a container
        https://bugs.webkit.org/show_bug.cgi?id=195542

        Reviewed by Antti Koivisto.

        Add functions to create an IteratorRange<T> that will iterate a container backwards. It
        works with any container that is compatible with std::rbegin() and std::rend(). It is
        expected to be used in conjunction with range-based for-loops like so:

        for (auto& value : WTF::makeReversedRange(myContainer)) 
            ...

        * wtf/IteratorRange.h:
        (WTF::makeReversedRange):

2019-03-10  Yusuke Suzuki <utatane.tea@gmail.com> and Fujii Hironori  <Hironori.Fujii@sony.com>

        [WTF] Align assumption in RunLoopWin to the other platform's RunLoop
        https://bugs.webkit.org/show_bug.cgi?id=181151

        Reviewed by Don Olmstead.

        This patch fixes RunLoop in Windows to align it to the implementations in the other platforms
        to use RunLoop more aggressively.

        * wtf/RunLoop.h:
        (WTF::RunLoop::Timer::Timer):
        * wtf/win/MainThreadWin.cpp:
        (initializeMainThreadPlatform): Call RunLoop::registerRunLoopMessageWindowClass.
        * wtf/win/RunLoopWin.cpp:
        (WTF::RunLoop::wndProc):
        (WTF::RunLoop::iterate):
        (WTF::RunLoop::stop):
        PostQuitMessage is only available in the RunLoop's thread. We should post a message and call
        it inside this task.

        (WTF::RunLoop::registerRunLoopMessageWindowClass):
        Changed the return type from bool to void, and added RELEASE_ASSERT to check the return value of RegisterClass.

        (WTF::RunLoop::~RunLoop):
        When the RunLoop's thread is freed, its associated window is freed. We do not need to do here.

        (WTF::RunLoop::TimerBase::timerFired):
        (WTF::RunLoop::TimerBase::TimerBase):
        (WTF::RunLoop::TimerBase::start):
        (WTF::RunLoop::TimerBase::stop):
        (WTF::RunLoop::TimerBase::isActive const):
        (WTF::RunLoop::TimerBase::secondsUntilFire const):
        (WTF::generateTimerID): Deleted.
        We can use TimerBase's pointer as ID since it is uintptr_t.

2019-03-07  Said Abou-Hallawa  <sabouhallawa@apple.com>

        requestAnimationFrame should execute before the next frame
        https://bugs.webkit.org/show_bug.cgi?id=177484

        Reviewed by Simon Fraser.

        Add trace points for the page RenderingUpdate.

        * wtf/SystemTracing.h:

2019-03-06  Ross Kirsling  <ross.kirsling@sony.com>

        [Win] Remove -DUCHAR_TYPE=wchar_t stopgap and learn to live with char16_t.
        https://bugs.webkit.org/show_bug.cgi?id=195346

        Reviewed by Fujii Hironori.

        * wtf/PlatformWin.cmake:
        * wtf/text/AtomicString.h:
        (WTF::AtomicString::AtomicString):
        * wtf/text/WTFString.h:
        (WTF::String::String):
        * wtf/text/win/StringWin.cpp: Added.
        (WTF::String::wideCharacters const): Renamed from WTF::stringToNullTerminatedWChar.
        * wtf/text/win/WCharStringExtras.h:
        (WTF::ucharFrom):
        (WTF::wcharFrom):
        (WTF::stringToNullTerminatedWChar): Deleted.
        (WTF::wcharToString): Deleted.
        (WTF::nullTerminatedWCharToString): Deleted.
        Add static_assert-guarded reinterpret_cast wrappers for going between UChar* and wchar_t*.
        Move existing to/from-String helpers into the String (and AtomicString) class(es).

        * wtf/win/FileSystemWin.cpp:
        (WTF::FileSystemImpl::getFindData):
        (WTF::FileSystemImpl::getFinalPathName):
        (WTF::FileSystemImpl::createSymbolicLink):
        (WTF::FileSystemImpl::deleteFile):
        (WTF::FileSystemImpl::deleteEmptyDirectory):
        (WTF::FileSystemImpl::moveFile):
        (WTF::FileSystemImpl::pathByAppendingComponent):
        (WTF::FileSystemImpl::fileSystemRepresentation):
        (WTF::FileSystemImpl::makeAllDirectories):
        (WTF::FileSystemImpl::pathGetFileName):
        (WTF::FileSystemImpl::storageDirectory):
        (WTF::FileSystemImpl::generateTemporaryPath):
        (WTF::FileSystemImpl::openTemporaryFile):
        (WTF::FileSystemImpl::openFile):
        (WTF::FileSystemImpl::hardLinkOrCopyFile):
        (WTF::FileSystemImpl::deleteNonEmptyDirectory):
        * wtf/win/LanguageWin.cpp:
        (WTF::localeInfo):
        * wtf/win/PathWalker.cpp:
        (WTF::PathWalker::PathWalker):
        Use wchar helpers as needed.

2019-02-28  Ryosuke Niwa  <rniwa@webkit.org>

        Add WeakHashSet
        https://bugs.webkit.org/show_bug.cgi?id=195152

        Reviewed by Antti Koivisto.

        Added WeakHashSet which is a HashSet of WeakPtr. When the object pointed by WeakPtr is deleted,
        WeakHashSet treats the key to be no longer in the set. That is, WeakHashSet::contains returns false
        and const_iterator skips such a WeakPtr in the set.

        We decided not to make HashSet<WeahPtr<T>> work because it involves weird semantics such as making
        find(X) delete the table entry as remove(find(X)) would be a no-op otherwise as find(X) would return
        necessarily need to return HashSet<WeakPtr<T>>::end().

        Furthermore, we cannot determine the true size of this set in O(1) because the objected pointed by
        some of WeakPtr in the set may have already been deleted. This has implications that we can't have
        size(), isEmpty(), random(), etc... as O(1) operation.

        WeakHashSet is implemented as HashSet<WeakReference<T>>. HashTable::rehash has been updated to delete
        WeakReference<T>'s whose m_ptr has become null, and HashTable::expand first deletes any such entry
        before deciding an actual expansion is needed. This is accomplished via newly added hash trait,
        hasIsReleasedWeakValueFunction, and HashTraits<Ref<WeakReference<T>>>::isReleasedWeakValue which
        returns true for when WeakReference<T> pointed by Ref<WeakReference<T>> has null m_ptr, not to be
        confused with Ref<WeakReference<T>> itself pointing to a null WeakReference<T>.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/Forward.h:
        * wtf/HashSet.h:
        (WTF::HashSet<T, U, V>::checkConsistency const): Added.
        * wtf/HashTable.h:
        (WTF::HashTable::isReleasedWeakBucket): Added.
        (WTF::HashTable::expand): Delete WeakReference<T> with null m_ptr first. This updates m_keyCount
        and may make mustRehashInPlace() return true.
        (WTF::HashTable::deleteReleasedWeakBuckets): Added.
        (WTF::HashTable::rehash): Delete WeakReference<T> with null m_ptr. Also refactored the code a bit
        to avoid keep repeating oldTable[i].
        * wtf/HashTraits.h:
        (WTF::HashTraits<T>::isHashTraitsReleasedWeakValue): Added.
        (WTF::RefHashTraits<T>): Extracted from HashTraits<Ref<P>> to share code with
        HashTraits<Ref<WeakReference<T>>>.
        (WTF::HashTraitsReleasedWeakValueChecker<Traits, hasIsReleasedWeakValueFunction>): Added.
        (WTF::isHashTraitsReleasedWeakValue<Traits, hasIsReleasedWeakValueFunction>): Added.
        * wtf/WeakHashSet.h: Added.
        (WTF::WeakHashSet): Added.
        (WTF::WeakHashSet::WeakHashSetConstIterator::WeakHashSetConstIterator):
        (WTF::WeakHashSet::WeakHashSetConstIterator::get const):
        (WTF::WeakHashSet::WeakHashSetConstIterator::operator* const):
        (WTF::WeakHashSet::WeakHashSetConstIterator::operator-> const):
        (WTF::WeakHashSet::WeakHashSetConstIterator::operator++):
        (WTF::WeakHashSet::WeakHashSetConstIterator::skipEmptyBuckets):
        (WTF::WeakHashSet::WeakHashSetConstIterator::operator== const):
        (WTF::WeakHashSet::WeakHashSetConstIterator::operator!= const):
        (WTF::WeakHashSet::WeakHashSet):
        (WTF::WeakHashSet::begin const):
        (WTF::WeakHashSet::end const):
        (WTF::WeakHashSet::add):
        (WTF::WeakHashSet::remove):
        (WTF::WeakHashSet::contains const):
        (WTF::WeakHashSet::capacity const):
        (WTF::WeakHashSet::computeSize const): Deletes any WeakReference<T> with null m_ptr first.
        (WTF::WeakHashSet::checkConsistency const):
        (WTF::HashTraits<Ref<WeakReference<T>>>): Added. This hash traits triggers the new code in HashTable's
        expand and rehash methods to delete WeakReference<T> with null m_ptr.
        (WTF::HashTraits<Ref<WeakReference<T>>>::isReleasedWeakValue):
        * wtf/WeakPtr.h:
        (WTF::WeakReference::~WeakReference): Added so that we can keep track the number of live WeakReference
        in API tests by template specializations.

2019-03-03  Darin Adler  <darin@apple.com>

        Prepare to improve handling of conversion of float to strings
        https://bugs.webkit.org/show_bug.cgi?id=195262

        Reviewed by Daniel Bates.

        * wtf/dtoa.cpp:
        (WTF::truncateTrailingZeros): Renamed from
        formatStringTruncatingTrailingZerosIfNeeded and removed the calls
        to double_conversion::StringBuilder::Finalizer, since the caller
        already does that.
        (WTF::numberToFixedPrecisionString): Added an overload for float
        and updated to use the new truncateTrailingZeros.
        (WTF::numberToFixedWidthString): Added an overload for float.

        * wtf/text/AtomicString.cpp:
        (WTF::AtomicString::number): Added float overload. This is a
        behavior change, but in all cases for the better. The old behavior
        was to convert to double first and then do "shortest form"
        conversion, and it's always better to just do that as float.
        * wtf/text/AtomicString.h: Added float overload of AtomicString::number.

        * wtf/text/StringBuilder.cpp:
        (WTF::StringBuilder::appendFixedPrecisionNumber): Added float
        overload.
        (WTF::StringBuilder::appendShortestFormNumber): Renamed from
        appendECMAScriptNumber and did the above.
        (WTF::StringBuilder::appendFixedWidthNumber): Ditto.
        * wtf/text/StringBuilder.h: Added overloads for float and
        appendShortestFormNumber. The appendNumber and appendECMAScriptNumber
        functions are now inlines in the header, since they are expressed
        entirely in terms of the other functions.

        * wtf/text/WTFString.cpp:
        (WTF::String::numberToStringFixedPrecision): Added float overload.
        Removed unnecessary explicit conversion to String.
        (WTF::String::numberToStringShortest): Renamed from
        numberToStringECMAScript and did the above.
        (WTF::String::numberToStringFixedWidth): Ditto.

        * wtf/text/WTFString.h: Added overloads for float and
        numberToStringShortest. The number and numberToStringECMAScript
        functions are now inlines in the header, since they are expressed
        entirely in terms of the other functions.

2019-03-04  Andy Estes  <aestes@apple.com>

        [Apple Pay] Move WebPaymentCoordinatorProxy from Source/WebKit/UIProcess to Source/WebKit/Shared
        https://bugs.webkit.org/show_bug.cgi?id=195080
        <rdar://problem/48421558>

        Reviewed by Antti Koivisto.

        * wtf/FeatureDefines.h:

2019-03-04  Michael Catanzaro  <mcatanzaro@igalia.com>

        URLHelpers should use unorm2_quickCheck before converting to NFC
        https://bugs.webkit.org/show_bug.cgi?id=194272

        Reviewed by Darin Adler.

        If the string is already in normalization form C, don't try to normalize it.

        * wtf/URLHelpers.cpp:
        (WTF::URLHelpers::toNormalizationFormC):

2019-03-02  Darin Adler  <darin@apple.com>

        Retire legacy dtoa function and DecimalNumber class
        https://bugs.webkit.org/show_bug.cgi?id=195253

        Reviewed by Daniel Bates.

        * WTF.xcodeproj/project.pbxproj: Removed DecimalNumber.cpp/h.
        * wtf/CMakeLists.txt: Ditto.

        * wtf/DecimalNumber.cpp: Removed.
        * wtf/DecimalNumber.h: Removed.

        * wtf/JSONValues.cpp:
        (WTF::JSONImpl::Value::writeJSON const): Use
        StringBuilder::appendECMAScriptNumber instead of custom logic
        using the DecimalNumber class.

        * wtf/dtoa.cpp:
        (WTF::storeInc): Deleted.
        (WTF::BigInt): Deleted.
        (WTF::multadd): Deleted.
        (WTF::hi0bits): Deleted.
        (WTF::lo0bits): Deleted.
        (WTF::i2b): Deleted.
        (WTF::mult): Deleted.
        (WTF::P5Node::P5Node): Deleted.
        (WTF::pow5mult): Deleted.
        (WTF::lshift): Deleted.
        (WTF::cmp): Deleted.
        (WTF::diff): Deleted.
        (WTF::d2b): Deleted.
        (WTF::quorem): Deleted.
        (WTF::dtoa): Deleted.

        * wtf/dtoa.h: Removed DtoaBuffer, dtoa, and NumberToStringBufferLength.

2019-02-27  Darin Adler  <darin@apple.com>

        Fixed makeString(float) to do shortest-form serialization without first converting to double
        https://bugs.webkit.org/show_bug.cgi?id=195142

        Reviewed by Daniel Bates.

        * wtf/DecimalNumber.cpp: Removed unneeded includes.

        * wtf/DecimalNumber.h: Removed unused constructors; over time we will be
        deprecating DecimalNumber, so we should removed the unused parts. Also
        marked the constructor explicit, removed types used only for arguments for
        the constructors, and removed the sign, exponent, significand, and precision
        member functions.

        * wtf/JSONValues.cpp:
        (WTF::JSONImpl::Value::writeJSON const): Updated for changes to DecimalNumber
        switched from NumberToLStringBuffer to NumberToStringBuffer, and for use of
        std::array instead of C arrays.

        * wtf/dtoa.cpp: Removed unused dtoaRoundSF and dtoaRoundDP functions.
        (WTF::dtoa): Updated to use std::array instead of C arrays.
        (WTF::dtoaRoundSF): Removed.
        (WTF::dtoaRoundDP): Removed.
        (WTF::numberToString): Added an overload for float and updated to use std::array.
        (WTF::formatStringTruncatingTrailingZerosIfNeeded): Updated to use std::array.
        (WTF::numberToFixedPrecisionString): Ditto.
        (WTF::numberToFixedWidthString): Ditto.

        * wtf/dtoa.h: Changed arrays to be std::array instead of C arrays so the
        array types will be checked. Removed dtoaRoundSF and dtoaRoundDP.
        Added float overloads for numberToString, numberToFixedPrecisionString,
        and numberToFixedWidthString. The only one of these that is called at this
        time is numberToString, called by the floating point StringTypeAdapter in
        StringConcatenateNummbers.h.

        * wtf/text/StringConcatenateNumbers.h: Updated for std::array.

2019-03-01  Darin Adler  <darin@apple.com>

        Finish removing String::format
        https://bugs.webkit.org/show_bug.cgi?id=194893

        Reviewed by Daniel Bates.

        * wtf/Assertions.cpp:
        (WTF::createWithFormatAndArguments): Moved this here from WTFString.cpp.
        (WTFLog): Use WTF::createWithFormatAndArguments instead of String::format.

        * wtf/HexNumber.h: Deleted unneeded toString function.

        * wtf/text/StringConcatenate.h: Got rid of unneeded forward declaration of
        StringTypeAdapter, since that's now in Forward.h. Tweaked formatting of templates
        a bit. Use function templates for writeTo functions rather than having two of each.
        Removed unused toString functions. Optimized case where we use have a UChar* and
        a length of zero to not force the result to be 16-bit. Also gets rid of a small
        NO_RETURN_DUE_TO_CRASH mess that we don't need. Refactored constructors to use some
        static member helper functions to compute string lengths. Added the pad function
        and the PaddingSpecification struct template, so we can add padding to anything
        we can turn into a string. Got rid of the special case overload for single
        arguments, since it only worked for things that the String constructor can handle.
        Instead we will now use StringTypeAdapter, which works for more types. Possibly
        less optimal for some special cases, which we could specialize for later if we like.
        * wtf/text/StringConcatenateNumbers.h: Ditto.
        * wtf/text/StringOperators.h: Ditto.
        * wtf/text/StringView.h: Ditto.

        * wtf/text/WTFString.cpp:
        (WTF::createWithFormatAndArguments): Deleted.
        (WTF::String::format): Deleted.
        * wtf/text/WTFString.h: Deleted declaration of String::format.

2019-03-01  Alex Christensen  <achristensen@webkit.org>

        Revert r241223, r241235, and r241287
        https://bugs.webkit.org/show_bug.cgi?id=194427
        <rdar://48045861>

        * wtf/spi/darwin/XPCSPI.h:

2019-03-01  Simon Fraser  <simon.fraser@apple.com>

        Add a system trace scope for event region building
        https://bugs.webkit.org/show_bug.cgi?id=195226

        Reviewed by Jon Lee.

        This trace scope measures the time spend converting element rects into Region objects,
        which can be large on some pages.

        The value for "Display Refresh Dispatch to main thread" was wrong and I fixed it.

        * wtf/SystemTracing.h:

2019-02-28  Yusuke Suzuki  <ysuzuki@apple.com>

        [JSC] sizeof(JSString) should be 16
        https://bugs.webkit.org/show_bug.cgi?id=194375

        Reviewed by Saam Barati.

        * wtf/text/StringImpl.h:
        (WTF::StringImpl::flagIs8Bit):
        (WTF::StringImpl::flagIsAtomic):
        (WTF::StringImpl::flagIsSymbol):
        (WTF::StringImpl::maskStringKind):
        * wtf/text/WTFString.cpp:
        (WTF::nullString):
        * wtf/text/WTFString.h:

2019-02-28  Mark Lam  <mark.lam@apple.com>

        Change CheckedArithmetic to not use std::enable_if_t.
        https://bugs.webkit.org/show_bug.cgi?id=195187
        <rdar://problem/48464665>

        Reviewed by Keith Miller.

        Because C++11 does not like std::enable_if_t and there's a need to use this file with C++11.

        * wtf/CheckedArithmetic.h:

2019-02-27  Simon Fraser  <simon.fraser@apple.com>

        Roll out r242014; it caused crashes in compositing logging (webkit.org/b/195141)

        * wtf/Assertions.cpp:
        (WTF::createWithFormatAndArguments): Deleted.
        * wtf/HexNumber.h:
        (WTF::StringTypeAdapter<HexNumberBuffer>::toString const):
        * wtf/text/StringConcatenate.h:
        (WTF::makeString):
        (WTF::pad): Deleted.
        (WTF::StringTypeAdapter<PaddingSpecification<UnderlyingAdapterType>>::StringTypeAdapter): Deleted.
        (WTF::StringTypeAdapter<PaddingSpecification<UnderlyingAdapterType>>::length const): Deleted.
        (WTF::StringTypeAdapter<PaddingSpecification<UnderlyingAdapterType>>::is8Bit const): Deleted.
        (WTF::StringTypeAdapter<PaddingSpecification<UnderlyingAdapterType>>::writeTo const): Deleted.
        * wtf/text/StringConcatenateNumbers.h:
        (WTF::FormattedNumber::fixedPrecision):
        (WTF::FormattedNumber::fixedWidth):
        (WTF::StringTypeAdapter<FormattedNumber>::toString const):
        * wtf/text/StringOperators.h:
        (WTF::StringAppend::StringAppend):
        * wtf/text/StringView.h:
        (WTF::StringView::invalidate):
        * wtf/text/WTFString.cpp:
        (WTF::createWithFormatAndArguments):
        (WTF::String::format):
        * wtf/text/WTFString.h:

2019-02-26  Mark Lam  <mark.lam@apple.com>

        Remove remaining poisoning code.
        https://bugs.webkit.org/show_bug.cgi?id=194138

        Reviewed by Saam Barati.

        This patch removes the instantiation of Poisoned variants of the various containers
        but retains the ability of those containers to work with pointer traits.  This
        allows us to use them with smart pointers in the future (just like we used to with
        Poisoned values).  At minimum, this ability will be useful when we want to insert
        an observer into the container storage type for debugging purposes, or to collect
        statistics for profiling.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/Bag.h:
        * wtf/CMakeLists.txt:
        * wtf/Platform.h:
        * wtf/Poisoned.cpp: Removed.
        * wtf/Poisoned.h: Removed.
        * wtf/PoisonedUniquePtr.h: Removed.
        * wtf/Ref.h:
        * wtf/RefCountedArray.h:
        * wtf/RefPtr.h:
        * wtf/WTFAssertions.cpp:

2019-02-26  Keith Miller  <keith_miller@apple.com>

        Code quality cleanup in NeverDestroyed
        https://bugs.webkit.org/show_bug.cgi?id=194824

        Reviewed by Yusuke Suzuki.

        First, move data members to the end of the class per WebKit
        style. Also, add forbid heap allocation since we expect the
        NeverDestroyed classes to be static.

        * wtf/NeverDestroyed.h:

2019-02-25  Xabier Rodriguez Calvar  <calvaris@igalia.com>

        Fix WTFLogVerbose variadic parameters forwarding
        https://bugs.webkit.org/show_bug.cgi?id=194920

        Reviewed by Alex Christensen.

        WTFLogVerbose was passing the va_list to WTFLog but this function
        also used variadic parameters and this is not allowed in C (that
        part of the code is extern "C").

        * wtf/Assertions.cpp:
        (WTF::WTFLogVaList): Created to take a va_list argument instead of
        variadic parameters.
        (WTF::WTFLog): Kept with variadic parameters, which are
        transformed to va_list and passed to WTFLogVaList.
        (WTF::WTFLogVerbose): Use WTFLogVaList instead of WTFLog.

2019-02-25  Sam Weinig  <sam@webkit.org>

        Update double-conversion to the latest version
        https://bugs.webkit.org/show_bug.cgi?id=194994

        Import the latest version of the double-conversion library based on
        https://github.com/google/double-conversion/commit/990c44707c70832dc1ce1578048c2198bafd3307

        In additon to importing the code, the following changes were applied (or re-applied) to maintain 
        parity with what we had previously:
             - Add #include "config.h" to each cpp file.
             - Put everything inside the WTF namespace.
             - Changed all in library includes to be of the form #include <wtf/dtoa/FILE.h>.
             - Renamed double_conversion::Vector<> to double_conversion::BufferReference<>.
             - Replaced duplicated functions with ASCIICType.h variants
             - Made CachedPower table a constexpr.
             - Exported (via WTF_EXPORT_PRIVATE) several functions in double-conversion.h.
             - Made substantial changes to StringToDoubleConverter to avoid unnecessary overhead of 
               parameterization, as we only ever want one configuration. Instead of constructing a
               configured class and calling StringToDouble on it, StringToDouble is now a static
               function. This allows a bunch of now dead code (hex support, octal support, etc.) to
               be eliminated. As StringToDoubleConverter now supports single precision floats, some
               additional templating of StringToIeee was added to avoid extra unnecessary branching.
             - Added RemoveCharacters function to double_conversion::StringBuilder.

        Reviewed by Darin Adler.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/dtoa/AUTHORS: Added.
        * wtf/dtoa/README: Removed.
        * wtf/dtoa/README.md: Added.
        * wtf/dtoa/bignum-dtoa.cc:
        * wtf/dtoa/bignum-dtoa.h:
        * wtf/dtoa/bignum.cc:
        * wtf/dtoa/bignum.h:
        (WTF::double_conversion::Bignum::Times10):
        (WTF::double_conversion::Bignum::Equal):
        (WTF::double_conversion::Bignum::LessEqual):
        (WTF::double_conversion::Bignum::Less):
        (WTF::double_conversion::Bignum::PlusEqual):
        (WTF::double_conversion::Bignum::PlusLessEqual):
        (WTF::double_conversion::Bignum::PlusLess):
        (WTF::double_conversion::Bignum::EnsureCapacity):
        (WTF::double_conversion::Bignum::BigitLength const):
        * wtf/dtoa/cached-powers.cc:
        * wtf/dtoa/cached-powers.h:
        * wtf/dtoa/diy-fp.cc:
        * wtf/dtoa/diy-fp.h:
        (WTF::double_conversion::DiyFp::DiyFp):
        (WTF::double_conversion::DiyFp::Subtract):
        (WTF::double_conversion::DiyFp::Minus):
        (WTF::double_conversion::DiyFp::Times):
        (WTF::double_conversion::DiyFp::Normalize):
        (WTF::double_conversion::DiyFp::f const):
        (WTF::double_conversion::DiyFp::e const):
        (WTF::double_conversion::DiyFp::set_f):
        (WTF::double_conversion::DiyFp::set_e):
        * wtf/dtoa/double-conversion.cc:
        * wtf/dtoa/double-conversion.h:
        (WTF::double_conversion::DoubleToStringConverter::DoubleToStringConverter):
        (WTF::double_conversion::DoubleToStringConverter::ToShortest const):
        (WTF::double_conversion::DoubleToStringConverter::ToShortestSingle const):
        (WTF::double_conversion::StringToDoubleConverter::StringToDoubleConverter):
        * wtf/dtoa/double.h: Removed.
        * wtf/dtoa/fast-dtoa.cc:
        * wtf/dtoa/fast-dtoa.h:
        * wtf/dtoa/fixed-dtoa.cc:
        * wtf/dtoa/fixed-dtoa.h:
        * wtf/dtoa/ieee.h: Added.
        (WTF::double_conversion::double_to_uint64):
        (WTF::double_conversion::uint64_to_double):
        (WTF::double_conversion::float_to_uint32):
        (WTF::double_conversion::uint32_to_float):
        (WTF::double_conversion::Double::Double):
        (WTF::double_conversion::Double::AsDiyFp const):
        (WTF::double_conversion::Double::AsNormalizedDiyFp const):
        (WTF::double_conversion::Double::AsUint64 const):
        (WTF::double_conversion::Double::NextDouble const):
        (WTF::double_conversion::Double::PreviousDouble const):
        (WTF::double_conversion::Double::Exponent const):
        (WTF::double_conversion::Double::Significand const):
        (WTF::double_conversion::Double::IsDenormal const):
        (WTF::double_conversion::Double::IsSpecial const):
        (WTF::double_conversion::Double::IsNan const):
        (WTF::double_conversion::Double::IsInfinite const):
        (WTF::double_conversion::Double::Sign const):
        (WTF::double_conversion::Double::UpperBoundary const):
        (WTF::double_conversion::Double::NormalizedBoundaries const):
        (WTF::double_conversion::Double::LowerBoundaryIsCloser const):
        (WTF::double_conversion::Double::value const):
        (WTF::double_conversion::Double::SignificandSizeForOrderOfMagnitude):
        (WTF::double_conversion::Double::Infinity):
        (WTF::double_conversion::Double::NaN):
        (WTF::double_conversion::Double::DiyFpToUint64):
        (WTF::double_conversion::Single::Single):
        (WTF::double_conversion::Single::AsDiyFp const):
        (WTF::double_conversion::Single::AsUint32 const):
        (WTF::double_conversion::Single::Exponent const):
        (WTF::double_conversion::Single::Significand const):
        (WTF::double_conversion::Single::IsDenormal const):
        (WTF::double_conversion::Single::IsSpecial const):
        (WTF::double_conversion::Single::IsNan const):
        (WTF::double_conversion::Single::IsInfinite const):
        (WTF::double_conversion::Single::Sign const):
        (WTF::double_conversion::Single::NormalizedBoundaries const):
        (WTF::double_conversion::Single::UpperBoundary const):
        (WTF::double_conversion::Single::LowerBoundaryIsCloser const):
        (WTF::double_conversion::Single::value const):
        (WTF::double_conversion::Single::Infinity):
        (WTF::double_conversion::Single::NaN):
        * wtf/dtoa/strtod.cc:
        * wtf/dtoa/strtod.h:
        * wtf/dtoa/utils.h:
        (abort_noreturn):
        (WTF::double_conversion::Max):
        (WTF::double_conversion::Min):
        (WTF::double_conversion::StrLength):
        (WTF::double_conversion::BufferReference::BufferReference):
        (WTF::double_conversion::BufferReference::SubVector):
        (WTF::double_conversion::BufferReference::length const):
        (WTF::double_conversion::BufferReference::is_empty const):
        (WTF::double_conversion::BufferReference::start const):
        (WTF::double_conversion::BufferReference::operator[] const):
        (WTF::double_conversion::BufferReference::first):
        (WTF::double_conversion::BufferReference::last):
        (WTF::double_conversion::StringBuilder::StringBuilder):
        (WTF::double_conversion::StringBuilder::~StringBuilder):
        (WTF::double_conversion::StringBuilder::size const):
        (WTF::double_conversion::StringBuilder::position const):
        (WTF::double_conversion::StringBuilder::Reset):
        (WTF::double_conversion::StringBuilder::AddCharacter):
        (WTF::double_conversion::StringBuilder::AddString):
        (WTF::double_conversion::StringBuilder::AddSubstring):
        (WTF::double_conversion::StringBuilder::AddPadding):
        (WTF::double_conversion::StringBuilder::RemoveCharacters):
        (WTF::double_conversion::StringBuilder::Finalize):
        (WTF::double_conversion::StringBuilder::is_finalized const):
        (WTF::double_conversion::BitCast):
        (WTF::double_conversion::BufferReference::SubBufferReference): Deleted.
        (WTF::double_conversion::StringBuilder::SetPosition): Deleted.

2019-02-20  Darin Adler  <darin@apple.com>

        Finish removing String::format
        https://bugs.webkit.org/show_bug.cgi?id=194893

        Reviewed by Daniel Bates.

        * wtf/Assertions.cpp:
        (WTF::createWithFormatAndArguments): Moved this here from WTFString.cpp.
        (WTFLog): Use WTF::createWithFormatAndArguments instead of String::format.

        * wtf/HexNumber.h: Deleted unneeded toString function.

        * wtf/text/StringConcatenate.h: Got rid of unneeded forward declaration of
        StringTypeAdapter, since that's now in Forward.h. Tweaked formatting of templates
        a bit. Use function templates for writeTo functions rather than having two of each.
        Removed unused toString functions. Optimized case where we use have a UChar* and
        a length of zero to not force the result to be 16-bit. Also gets rid of a small
        NO_RETURN_DUE_TO_CRASH mess that we don't need. Refactored constructors to use some
        static member helper functions to compute string lengths. Added the pad function
        and the PaddingSpecification struct template, so we can add padding to anything
        we can turn into a string. Got rid of the special case overload for single
        arguments, since it only worked for things that the String constructor can handle.
        Instead we will now use StringTypeAdapter, which works for more types. Possibly
        less optimal for some special cases, which we could specialize for later if we like.
        * wtf/text/StringConcatenateNumbers.h: Ditto.
        * wtf/text/StringOperators.h: Ditto.
        * wtf/text/StringView.h: Ditto.

        * wtf/text/WTFString.cpp:
        (WTF::createWithFormatAndArguments): Deleted.
        (WTF::String::format): Deleted.
        * wtf/text/WTFString.h: Deleted declaration of String::format.

2019-02-23  Michael Catanzaro  <mcatanzaro@igalia.com>

        Unreviewed, fix find/replace error from r232178

        Looks like this was the only such error in that commit.

        * wtf/URLHelpers.cpp:
        (WTF::URLHelpers::isLookalikeCharacter):

2019-02-23  Mark Lam  <mark.lam@apple.com>

        Add an exception check and some assertions in StringPrototype.cpp.
        https://bugs.webkit.org/show_bug.cgi?id=194962
        <rdar://problem/48013416>

        Reviewed by Yusuke Suzuki and Saam Barati.

        Add an AssertNoOverflow overflow handler which allows us to do CheckedArithmetic
        for assertion purpose only on debug builds but sacrifices no performance on
        release builds.

        * wtf/CheckedArithmetic.h:
        (WTF::AssertNoOverflow::overflowed):
        (WTF::AssertNoOverflow::clearOverflow):
        (WTF::AssertNoOverflow::crash):
        (WTF::AssertNoOverflow::hasOverflowed const):
        (WTF::observesOverflow):
        (WTF::observesOverflow<AssertNoOverflow>):
        (WTF::safeAdd):
        (WTF::safeSub):
        (WTF::safeMultiply):
        (WTF::Checked::operator+=):
        (WTF::Checked::operator-=):
        (WTF::Checked::operator*=):
        (WTF::operator+):
        (WTF::operator-):
        (WTF::operator*):

2019-02-23  Keith Miller  <keith_miller@apple.com>

        Add new mac target numbers
        https://bugs.webkit.org/show_bug.cgi?id=194955

        Reviewed by Tim Horton.

        * Configurations/Base.xcconfig:
        * Configurations/DebugRelease.xcconfig:

2019-02-21  Antoine Quint  <graouts@apple.com>

        Move UIWebTouchEventsGestureRecognizer.activeTouchesByIdentifier to SPI
        https://bugs.webkit.org/show_bug.cgi?id=194531
        <rdar://problem/47714562>

        Reviewed by Tim Horton.

        Follow-up commit to ensure this SPI is only called on newer versions of iOS.

        * wtf/Platform.h:

2019-02-21  Dean Jackson  <dino@apple.com>

        Rotation animations sometimes use the wrong origin (affects apple.com)
        https://bugs.webkit.org/show_bug.cgi?id=194878
        <rdar://problem/43908047>

        Follow-up commit to ensure this change only affects newer versions
        of iOS.

        * wtf/Platform.h: Add a version check.

2019-02-20  Alex Christensen  <achristensen@webkit.org>

        URL percent-encode operations should use checked arithmetic for buffer allocation length
        https://bugs.webkit.org/show_bug.cgi?id=194877
        <rdar://problem/48212062>

        Reviewed by Tim Horton.

        * wtf/URLHelpers.cpp:
        (WTF::URLHelpers::userVisibleURL):
        * wtf/cocoa/NSURLExtras.mm:
        (WTF::dataWithUserTypedString):

2019-02-20  Dean Jackson  <dino@apple.com>

        Rotation animations sometimes use the wrong origin (affects apple.com)
        https://bugs.webkit.org/show_bug.cgi?id=194878
        <rdar://problem/43908047>

        Reviewed by Simon Fraser.

        * wtf/Platform.h: Add HAVE(CA_WHERE_ADDITIVE_TRANSFORMS_ARE_REVERSED).

2019-02-20  Andy Estes  <aestes@apple.com>

        [Xcode] Add SDKVariant.xcconfig to various Xcode projects
        https://bugs.webkit.org/show_bug.cgi?id=194869

        Rubber-stamped by Jer Noble.

        * WTF.xcodeproj/project.pbxproj:

2019-02-20  Adrian Perez de Castro  <aperez@igalia.com>

        [WPE][GTK] Enable support for CONTENT_EXTENSIONS
        https://bugs.webkit.org/show_bug.cgi?id=167941

        Reviewed by Carlos Garcia Campos.

        Add specialization of the refGPtr() and derefGPtr() templates for GMappedFile.

        * wtf/glib/GRefPtr.cpp:
        (WTF::refGPtr): Added.
        (WTF::derefGPtr): Added.
        * wtf/glib/GRefPtr.h: Declare template specializations.

2019-02-19  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r241770.
        https://bugs.webkit.org/show_bug.cgi?id=194833

        Caused crashes (Requested by smfr on #webkit).

        Reverted changeset:

        "Code quality cleanup in NeverDestroyed"
        https://bugs.webkit.org/show_bug.cgi?id=194824
        https://trac.webkit.org/changeset/241770

2019-02-19  Keith Miller  <keith_miller@apple.com>

        Code quality cleanup in NeverDestroyed
        https://bugs.webkit.org/show_bug.cgi?id=194824

        Reviewed by Yusuke Suzuki.

        First, move data members to the end of the class per WebKit
        style. Also, add forbid heap allocation since we expect the
        NeverDestroyed classes to be static.

        * wtf/NeverDestroyed.h:

2019-02-16  Darin Adler  <darin@apple.com>

        Continue reducing use of String::format, now focusing on hex: "%p", "%x", etc.
        https://bugs.webkit.org/show_bug.cgi?id=194752

        Reviewed by Daniel Bates.

        * WTF.xcodeproj/project.pbxproj: Added HexNumber.cpp and Logger.cpp.
        * wtf/CMakeLists.txt: Ditto.

        * wtf/HexNumber.cpp: Added.
        (WTF::Internal::appendHex): Non-inline, non-template hex formatting logic.

        * wtf/HexNumber.h:
        (WTF::Internal::appendHex): Refactored main logic of appendUnsignedAsHex and
        appendUnsignedAsHexFixedSize so they can be reused in a function named hex for
        use with StringTypeAdapter.
        (WTF::appendUnsignedAsHex): Ditto.
        (WTF::appendUnsignedAsHexFixedSize): Ditto.
        (WTF::hex): Added.
        (WTF::StringTypeAdapter<HexNumberBuffer>): Added.

        * wtf/Logger.cpp: Added.
        (WTF::Logger::LogSiteIdentifier::toString const): Made this a non-template
        function and moved it here so that we don't need to include HexNumber.h
        in Logger.h. Since HexNumber.h has substantial code in it, it's good if we
        don't include it in any other headers.

        * wtf/Logger.h:
        (WTF::LogArgument<Logger::LogSiteIdentifier>::toString): Changed to call
        a non-template function, LogSiteIdentifier::toString.

        * wtf/text/StringConcatenateNumbers.h: Replaced overloaded writeTo functions
        with function templates and used StringImpl::copyCharacters instead of
        hand-written loops.

2019-02-18  Joseph Pecoraro  <pecoraro@apple.com>

        Web Inspector: Better categorize CPU usage per-thread / worker
        https://bugs.webkit.org/show_bug.cgi?id=194564

        Reviewed by Devin Rousso.

        * wtf/Threading.h:
        * wtf/Threading.cpp:
        (WTF::Thread::allThreadsMutex):
        (WTF::Thread::create):
        (WTF::Thread::didExit):
        Add a set of all WTF::Thread created threads.

2019-02-18  Tadeu Zagallo  <tzagallo@apple.com>

        Bytecode cache should a have a boot-specific validation
        https://bugs.webkit.org/show_bug.cgi?id=194769
        <rdar://problem/48149509>

        Reviewed by Keith Miller.

        Add helper to get kern.bootsessionuuid from sysctl

        * wtf/UUID.cpp:
        (WTF::bootSessionUUIDString):
        * wtf/UUID.h:

2019-02-17  David Kilzer  <ddkilzer@apple.com>

        Unreviewed, rolling out r241620.

        "Causes use-after-free crashes running layout tests with ASan and GuardMalloc."
        (Requested by ddkilzer on #webkit.)

        Reverted changeset:

        "[WTF] Add environment variable helpers"
        https://bugs.webkit.org/show_bug.cgi?id=192405
        https://trac.webkit.org/changeset/241620

2019-02-15  Ross Kirsling  <ross.kirsling@sony.com>

        [WTF] Add environment variable helpers
        https://bugs.webkit.org/show_bug.cgi?id=192405

        Reviewed by Michael Catanzaro.

        Create a new Environment API as a platform-independent, thread-safe(r)
        way to get and set environment variables.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/Environment.h: Added.
        * wtf/PlatformGTK.cmake:
        * wtf/PlatformJSCOnly.cmake:
        * wtf/PlatformMac.cmake:
        * wtf/PlatformPlayStation.cmake:
        * wtf/PlatformWPE.cmake:
        * wtf/PlatformWin.cmake:
        * wtf/posix/EnvironmentPOSIX.cpp: Added.
        * wtf/win/EnvironmentWin.cpp: Added.
        Introduce WTF::Environment.

        * wtf/Threading.cpp:
        (WTF::threadingIsInitialized):
        (WTF::initializeThreading):
        * wtf/Threading.h:
        Introduce WTF::threadingIsInitialized() so that we can ASSERT that it's
        false before setting an environment variable through the new API.

        * wtf/DataLog.cpp:
        (WTF::initializeLogFileOnce):
        * wtf/NumberOfCores.cpp:
        (WTF::numberOfProcessorCores):
        * wtf/posix/FileSystemPOSIX.cpp:
        (WTF::FileSystemImpl::openTemporaryFile):
        Utilize WTF::Environment where possible.

2019-02-15  Brian Burg  <bburg@apple.com>

        [Mac] WebInspectorUI.framework does not need to be soft-linked anymore
        https://bugs.webkit.org/show_bug.cgi?id=194411
        <rdar://problem/47787614>

        Reviewed by Joseph Pecoraro.

        * wtf/cocoa/SoftLinking.h:
        Remove macro that now has no uses.

2019-02-15  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r241559 and r241566.
        https://bugs.webkit.org/show_bug.cgi?id=194710

        Causes layout test crashes under GuardMalloc (Requested by
        ryanhaddad on #webkit).

        Reverted changesets:

        "[WTF] Add environment variable helpers"
        https://bugs.webkit.org/show_bug.cgi?id=192405
        https://trac.webkit.org/changeset/241559

        "Unreviewed build fix for WinCairo Debug after r241559."
        https://trac.webkit.org/changeset/241566

2019-02-15  Truitt Savell  <tsavell@apple.com>

        Unreviewed, rolling out r241564.

        Caused 50+ Timeouts on Mac WK2, mostly in the http/ directory

        Reverted changeset:

        "[Mac] WebInspectorUI.framework does not need to be soft-
        linked anymore"
        https://bugs.webkit.org/show_bug.cgi?id=194411
        https://trac.webkit.org/changeset/241564

2019-02-15  Dominik Infuehr  <dinfuehr@igalia.com>

        Fix deadlock on Linux/x64 between SamplingProfiler and VMTraps
        https://bugs.webkit.org/show_bug.cgi?id=194014

        Reviewed by Michael Catanzaro.

        Do not block SIGUSR1 when installing signal handlers, since this signal
        is used to suspend/resume machine threads on Linux.

        ftl-ai-filter-phantoms-should-clear-clear-value.js deadlocked with
        enabled watchdog and sampling.

        Deadlock happened in the following situation:

        Thread 1 (Sampling): SamplingProfiler.cpp:takeSample takes all needed locks
        and then tries to suspend the main thread.

        Thread 2 (Watchdog/VMTraps): Before the Sampling-Thread suspends the main thread
        a signal is caught and the signal handler is invoked (VMTraps.cpp:SignalSender).
        SignalSender tries to lock codeBlockSet, but this is already locked by the
        SamplingProfiler.

        The SamplingProfiler can only give up the lock when it suspends
        the thread. However since the VMTraps signal handler is active, all other signals blocked,
        therefore the SamplingProfiler also waits until its signal handler is invoked.

        This patch fixes this by not blocking SIGUSR1 in installSignalHandler, since
        it is used to suspend/resume threads on Linux.

        * wtf/Threading.h:
        * wtf/posix/ThreadingPOSIX.cpp:
        * wtf/threads/Signals.cpp:
        (WTF::installSignalHandler):

2019-02-15  Saam barati  <sbarati@apple.com>

        [WebAssembly] Write a new register allocator for Air O0 and make BBQ use it
        https://bugs.webkit.org/show_bug.cgi?id=194036

        Reviewed by Yusuke Suzuki.

        * wtf/IndexMap.h:
        (WTF::IndexMap::at):
        (WTF::IndexMap::at const):
        (WTF::IndexMap::operator[]):
        (WTF::IndexMap::operator[] const):

2019-02-14  Brian Burg  <bburg@apple.com>

        [Mac] WebInspectorUI.framework does not need to be soft-linked anymore
        https://bugs.webkit.org/show_bug.cgi?id=194411
        <rdar://problem/47787614>

        Reviewed by Joseph Pecoraro.

        * wtf/cocoa/SoftLinking.h:
        Remove macro that now has no uses.

2019-02-14  Ross Kirsling  <ross.kirsling@sony.com>

        [WTF] Add environment variable helpers
        https://bugs.webkit.org/show_bug.cgi?id=192405

        Reviewed by Michael Catanzaro.

        Create a new Environment API as a platform-independent, thread-safe(r)
        way to get and set environment variables.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/Environment.h: Added.
        * wtf/PlatformGTK.cmake:
        * wtf/PlatformJSCOnly.cmake:
        * wtf/PlatformMac.cmake:
        * wtf/PlatformPlayStation.cmake:
        * wtf/PlatformWPE.cmake:
        * wtf/PlatformWin.cmake:
        * wtf/posix/EnvironmentPOSIX.cpp: Added.
        * wtf/win/EnvironmentWin.cpp: Added.
        Introduce WTF::Environment.

        * wtf/Threading.cpp:
        (WTF::threadingIsInitialized):
        (WTF::initializeThreading):
        * wtf/Threading.h:
        Introduce WTF::threadingIsInitialized() so that we can ASSERT that it's
        false before setting an environment variable through the new API.

        * wtf/DataLog.cpp:
        (WTF::initializeLogFileOnce):
        * wtf/NumberOfCores.cpp:
        (WTF::numberOfProcessorCores):
        * wtf/posix/FileSystemPOSIX.cpp:
        (WTF::FileSystemImpl::openTemporaryFile):
        Utilize WTF::Environment where possible.

2019-02-13  Yusuke Suzuki  <ysuzuki@apple.com>

        We should only make rope strings when concatenating strings long enough.
        https://bugs.webkit.org/show_bug.cgi?id=194465

        Reviewed by Mark Lam.

        * wtf/text/StringImpl.h:
        (WTF::StringImpl::headerSize):

2019-02-12  Tim Horton  <timothy_horton@apple.com>

        Remove WKLegacyPDFView
        https://bugs.webkit.org/show_bug.cgi?id=194559

        Reviewed by Andy Estes.

        * wtf/FeatureDefines.h:

2019-02-12  David Kilzer  <ddkilzer@apple.com>

        REGRESSION (r238955, r240494): Soft-linking optional Lookup.framework triggers release assertion when missing
        <https://webkit.org/b/194529>
        <rdar://problem/47924449>

        Reviewed by Eric Carlson.

        * wtf/cocoa/SoftLinking.h:
        (SOFT_LINK_CLASS_FOR_SOURCE_WITH_EXPORT_AND_IS_OPTIONAL): Rename
        SOFT_LINK_CLASS_FOR_SOURCE_WITH_EXPORT_AND_ASSERTION() to this
        and change `assertion` argument to `isOptional`.  Pass
        `isOptional` to framework##Library() method to control assertion
        behavior.  Only check RELEASE_ASSERT() if `!isOptional`, else
        that code should be optimized out by the compiler.  This fixes
        the crash.
        (NO_ASSERT): Remove macro since it's no longer used.
        (SOFT_LINK_IS_OPTIONAL): Add macro to use for soft-linking
        optional classes.
        (SOFT_LINK_IS_NOT_OPTIONAL): Add macro to use for soft-linking
        non-optional classes.
        (SOFT_LINK_CLASS_FOR_SOURCE_WITH_EXPORT): Update to use new
        SOFT_LINK_CLASS_FOR_SOURCE_WITH_EXPORT_AND_IS_OPTIONAL() macro.
        (SOFT_LINK_CLASS_FOR_SOURCE_OPTIONAL_WITH_EXPORT): Ditto.
        (SOFT_LINK_CLASS_FOR_SOURCE): Ditto.
        (SOFT_LINK_CLASS_FOR_SOURCE_OPTIONAL): Ditto.

2019-02-12  Andy Estes  <aestes@apple.com>

        [iOSMac] Enable Parental Controls Content Filtering
        https://bugs.webkit.org/show_bug.cgi?id=194521
        <rdar://39732376>

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2019-02-11  Myles C. Maxfield  <mmaxfield@apple.com>

        [Cocoa] Ask platform for generic font family mappings
        https://bugs.webkit.org/show_bug.cgi?id=187723
        <rdar://problem/41892438>

        Reviewed by Brent Fulgham.

        Add an ENABLE in Platform.

        * wtf/Platform.h:

2019-02-11  Truitt Savell  <tsavell@apple.com>

        Unreviewed, rolling out r241229.

        Revision broke internal builds for watchOS.

        Reverted changeset:

        "[Cocoa] Ask platform for generic font family mappings"
        https://bugs.webkit.org/show_bug.cgi?id=187723
        https://trac.webkit.org/changeset/241229

2019-02-10  Darin Adler  <darin@apple.com>

        Switch uses of StringBuilder with String::format for hex numbers to use HexNumber.h instead
        https://bugs.webkit.org/show_bug.cgi?id=194485

        Reviewed by Daniel Bates.

        * wtf/HexNumber.h: Removed unused functions placeByteAsHexCompressIfPossible and
        placeByteAsHex. Can always bring them back if someone needs them. Updated
        appendUnsignedAsHex to be a template so we can use it on any integer type,
        got rid of unnecessary use of Vector and unnecessary reversing, and got rid of
        appendUnsigned64AsHex since callers can now just use appendUnsignedAsHex.
        Rewrote appendUnsignedAsHexFixedSize to share mode code rather than replicating.

        * wtf/Logger.h: Use appendUnsignedAsHex instead of appendUnsigned64AsHex.

        * wtf/URL.cpp: Removed unnecessary include of HexNumber.h.

        * wtf/cocoa/NSURLExtras.h: Added missing include of Foundation.h that was
        worked around in NSURLExtras.mm.
        * wtf/cocoa/NSURLExtras.mm: Removed unnecessary includes of HexNumber.h
        and Foundation.h.

2019-02-09  Darin Adler  <darin@apple.com>

        Eliminate unnecessary String temporaries by using StringConcatenateNumbers
        https://bugs.webkit.org/show_bug.cgi?id=194021

        Reviewed by Geoffrey Garen.

        * wtf/URL.cpp:
        (WTF::URL::setPort): Remove String::number and let makeString do the conversion
        without allocating/destroying a String. Added a cast to "unsigned" to sidestep the
        ambiguity with 16-bit unsigned types that are sometimes used for numbers (uint16_t)
        and sometimes used for UTF-16 code units (UChar) and can be the same type.

        * wtf/text/StringConcatenateNumbers.h:
        Changed FormattedNumber::fixedPrecision to more closely match String::number and
        StringBuilder::appendNumber by defaulting to truncating trailing zeros and using
        a named enumeration for the truncation policy rather than a boolean.


2019-02-09  Yusuke Suzuki  <ysuzuki@apple.com>

        Unreviewed, rolling in r241237 again
        https://bugs.webkit.org/show_bug.cgi?id=194469

        After the measurement, this patch was unrelated to recent regression.

        * wtf/text/StringImpl.h:
        (WTF::StringImpl::isSubString const):
        (WTF::StringImpl::createSubstringSharingImpl):

2019-02-09  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r241237.
        https://bugs.webkit.org/show_bug.cgi?id=194474

        Shows significant memory increase in WSL (Requested by
        yusukesuzuki on #webkit).

        Reverted changeset:

        "[WTF] Use BufferInternal StringImpl if substring StringImpl
        takes more memory"
        https://bugs.webkit.org/show_bug.cgi?id=194469
        https://trac.webkit.org/changeset/241237

2019-02-08  Yusuke Suzuki  <ysuzuki@apple.com>

        [WTF] Use BufferInternal StringImpl if substring StringImpl takes more memory
        https://bugs.webkit.org/show_bug.cgi?id=194469

        Reviewed by Geoffrey Garen.

        Because pointer is large and aligned in 64bit in 64bit architecture, BufferSubstring StringImpl
        implementation takes more memory than BufferInternal StringImpl implementation for small strings.
        And BufferInternal StringImpl does not have a problem like, small substring StringImpl keeps super
        large owner StringImpl. This patch calculates the required size of memory and selects the more efficient one.

        * wtf/text/StringImpl.h:
        (WTF::StringImpl::isSubString const):
        (WTF::StringImpl::createSubstringSharingImpl):

2019-02-08  Alex Christensen  <achristensen@webkit.org>

        Add SPI to use networking daemon instead of XPC service
        https://bugs.webkit.org/show_bug.cgi?id=194427

        Reviewed by Geoffrey Garen.

        * wtf/spi/darwin/XPCSPI.h:
        Instead of using XPC bootstrap SPI, we just send a separate message.
        xpc_copy_bootstrap does not seem to work in  daemons.

2019-02-08  Truitt Savell  <tsavell@apple.com>

        Unreviewed, rolling out r241197.

        Broke iOS Simulator Debug build and casued 1 API failure on
        High Sierra

        Reverted changeset:

        "Add SPI to use networking daemon instead of XPC service"
        https://bugs.webkit.org/show_bug.cgi?id=194427
        https://trac.webkit.org/changeset/241197

2019-02-08  Alex Christensen  <achristensen@webkit.org>

        Add SPI to use networking daemon instead of XPC service
        https://bugs.webkit.org/show_bug.cgi?id=194427

        Reviewed by Geoffrey Garen.

        * wtf/spi/darwin/XPCSPI.h:
        Instead of using XPC bootstrap SPI, we just send a separate message.
        xpc_copy_bootstrap does not seem to work in  daemons.

2019-02-08  Benjamin Poulain  <benjamin@webkit.org>

        clampTo(): do not convert the input to double when dealing with integers
        https://bugs.webkit.org/show_bug.cgi?id=194263
        <rdar://problem/47692312>

        Reviewed by Darin Adler.

        Previously, every use of clampTo() was converting the input to double,
        doing the comparison in double, then casting back to whatever type was needed.

        In many case, that was very wasteful. WebKit has many cases of clampTo() with
        the same type as input/output, or with integer types of different size/sign.

        This patch adds a few versions of clampTo() for the common cases seen in WebKit.
        In each case, I tried to minimize the amount of conversion needed at runtime.

        * wtf/MathExtras.h:
        (clampTo):

2019-02-07  Chris Dumez  <cdumez@apple.com>

        Mark more heap-allocated classes as fast allocated
        https://bugs.webkit.org/show_bug.cgi?id=194422

        Reviewed by Ryosuke Niwa.

        * wtf/Function.h:
        (WTF::Function<Out):
        * wtf/RefCounter.h:
        * wtf/URL.h:
        * wtf/text/StringView.cpp:

2019-02-07  Per Arne Vollan  <pvollan@apple.com>

        [macOS] Block coreservicesd in sandbox.
        https://bugs.webkit.org/show_bug.cgi?id=192670

        Reviewed by Alexey Proskuryakov.

        Add HAVE_CSCHECKFIXDISABLE define.

        * wtf/Platform.h:

2019-02-07  Eric Carlson  <eric.carlson@apple.com>

        [MSE] Convert debug-only logging to runtime logging
        https://bugs.webkit.org/show_bug.cgi?id=194348
        <rdar://problem/47566449>

        Reviewed by Jer Noble.

        * wtf/LoggerHelper.h:
        (WTF::LoggerHelper::childLogIdentifier const): Helper to generate a log identifier for an
        object that is associated with another logging object.
        * wtf/MediaTime.cpp:
        (WTF::MediaTime::toJSONObject const):
        (WTF::MediaTime::toJSONString const):
        (WTF::MediaTimeRange::toJSONString const):
        (WTF::toJSONStringInternal): Deleted.
        * wtf/MediaTime.h:

2019-02-05  Keith Rollin  <krollin@apple.com>

        Enable the automatic checking and regenerations of .xcfilelists during builds
        https://bugs.webkit.org/show_bug.cgi?id=194124
        <rdar://problem/47721277>

        Reviewed by Tim Horton.

        Bug 193790 add a facility for checking -- during build time -- that
        any needed .xcfilelist files are up-to-date and for updating them if
        they are not. This facility was initially opt-in by setting
        WK_ENABLE_CHECK_XCFILELISTS until other pieces were in place and until
        the process seemed robust. Its now time to enable this facility and
        make it opt-out. If there is a need to disable this facility, set and
        export WK_DISABLE_CHECK_XCFILELISTS=1 in your environment before
        running `make` or `build-webkit`, or before running Xcode from the
        command line.

        Additionally, remove the step that generates a list of source files
        going into the UnifiedSources build step. It's only necessarily to
        specify Sources.txt and SourcesCocoa.txt as inputs.

        * Scripts/generate-unified-source-bundles.rb:

2019-02-05  Yusuke Suzuki  <ysuzuki@apple.com>

        [JSC] Shrink sizeof(UnlinkedCodeBlock)
        https://bugs.webkit.org/show_bug.cgi?id=194281

        Reviewed by Michael Saboff.

        * wtf/TriState.h:

2019-02-05  Zan Dobersek  <zdobersek@igalia.com>

        [GLib] Stop URI-escaping file system representations
        https://bugs.webkit.org/show_bug.cgi?id=194213

        Reviewed by Carlos Garcia Campos.

        Stop URI-escaping of file representation strings in
        FileSystem::stringFromFileSystemRepresentation(), and URI-unescaping
        of strings in FileSystem::fileSystemRepresentation().

        This behavior deviates from POSIX and CF implementations and is
        currently breaking IndexedDB-specific calculation of database sizes due
        to directory components used in that process that are URL-based and are
        as such URI-escaped. When unescaped, those single directory components
        explode into multiple directory components, leading to incorrect total
        database size calculation when iterating the database directory.

        FileSystem::stringFromFileSystemRepresentation() now retrieves GLib's
        filename charsets and in worst case converts the filesystem
        representation to UTF-8 before String::fromUTF8() is used.
        FileSystem::fileSystemRepresentation() reverses that process, taking
        String's UTF-8 data and converting it to target charset if necessary.

        Other FileSystem functions are adjusted to convert passed-in String
        objects to filesystem representations.

        * wtf/glib/FileSystemGlib.cpp:
        (WTF::FileSystemImpl::stringFromFileSystemRepresentation):
        (WTF::FileSystemImpl::fileSystemRepresentation):
        (WTF::FileSystemImpl::validRepresentation):
        (WTF::FileSystemImpl::filenameForDisplay):
        (WTF::FileSystemImpl::fileExists):
        (WTF::FileSystemImpl::deleteFile):
        (WTF::FileSystemImpl::deleteEmptyDirectory):
        (WTF::FileSystemImpl::getFileStat):
        (WTF::FileSystemImpl::getFileLStat):
        (WTF::FileSystemImpl::makeAllDirectories):
        (WTF::FileSystemImpl::createSymbolicLink):
        (WTF::FileSystemImpl::pathGetFileName):
        (WTF::FileSystemImpl::getVolumeFreeSpace):
        (WTF::FileSystemImpl::directoryName):
        (WTF::FileSystemImpl::listDirectory):
        (WTF::FileSystemImpl::openFile):
        (WTF::FileSystemImpl::moveFile):
        (WTF::FileSystemImpl::hardLinkOrCopyFile):
        (WTF::FileSystemImpl::getFileDeviceId): Align with POSIX implementation
        and treat input CString as an existing filesystem representation.
        (WTF::FileSystemImpl::unescapedFilename): Deleted.

2019-02-04  Ms2ger  <Ms2ger@igalia.com>

        [GTK][WPE] Need a function to convert internal URI to display ("pretty") URI
        https://bugs.webkit.org/show_bug.cgi?id=174816

        Reviewed by Michael Catanzaro.

        Translate userVisibleString and dependent code into platform-neutral C++
        in wtf/URLHelpers.{h,cpp}.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/URLHelpers.cpp: Added.
        (WTF::URLHelpers::loadIDNScriptWhiteList):
        (WTF::URLHelpers::isArmenianLookalikeCharacter):
        (WTF::URLHelpers::isArmenianScriptCharacter):
        (WTF::URLHelpers::isASCIIDigitOrValidHostCharacter):
        (WTF::URLHelpers::isLookalikeCharacter):
        (WTF::URLHelpers::whiteListIDNScript):
        (WTF::URLHelpers::initializeDefaultIDNScriptWhiteList):
        (WTF::URLHelpers::allCharactersInIDNScriptWhiteList):
        (WTF::URLHelpers::isSecondLevelDomainNameAllowedByTLDRules):
        (WTF::URLHelpers::isRussianDomainNameCharacter):
        (WTF::URLHelpers::allCharactersAllowedByTLDRules):
        (WTF::URLHelpers::mapHostName):
        (WTF::URLHelpers::collectRangesThatNeedMapping):
        (WTF::URLHelpers::applyHostNameFunctionToMailToURLString):
        (WTF::URLHelpers::applyHostNameFunctionToURLString):
        (WTF::URLHelpers::mapHostNames):
        (WTF::URLHelpers::createStringWithEscapedUnsafeCharacters):
        (WTF::URLHelpers::toNormalizationFormC):
        (WTF::URLHelpers::userVisibleURL):
        * wtf/URLHelpers.h: Added.
        * wtf/cocoa/NSURLExtras.mm:
        (WTF::URLHelpers::loadIDNScriptWhiteList):
        (WTF::decodePercentEscapes):
        (WTF::decodeHostName):
        (WTF::encodeHostName):
        (WTF::URLWithUserTypedString):
        (WTF::userVisibleString):

2019-02-03  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r240896.
        https://bugs.webkit.org/show_bug.cgi?id=194202

        "Fixes leaks, but is probably not the correct fix." (Requested
        by ddkilzer on #webkit).

        Reverted changeset:

        "Leak of WTF::StringImpl under SymbolImpl::createNullSymbol()
        (48 bytes) in com.apple.WebKit.WebContent running layout
        tests"
        https://bugs.webkit.org/show_bug.cgi?id=193291
        https://trac.webkit.org/changeset/240896

2019-02-02  David Kilzer  <ddkilzer@apple.com>

        Leak of WTF::StringImpl under SymbolImpl::createNullSymbol() (48 bytes) in com.apple.WebKit.WebContent running layout tests
        <https://webkit.org/b/193291>
        <rdar://problem/46655953>

        Reviewed by Keith Miller.

        * wtf/text/SymbolImpl.h:
        (WTF::SymbolImpl::~SymbolImpl): Fix the leak by implementing the
        class destructor that calls StringImpl::deref() on `m_owner`.
        Two of the three constructors leak the StringImpl when setting
        `m_owner`, so we need to balance that by manually calling
        deref().

2018-12-16  Darin Adler  <darin@apple.com>

        Convert additional String::format clients to alternative approaches
        https://bugs.webkit.org/show_bug.cgi?id=192746

        Reviewed by Alexey Proskuryakov.

        * wtf/JSONValues.cpp:
        (WTF::appendDoubleQuotedStringEscapedCharacter): Renamed from
        escapeChar and reordered arguments to make sense as an append function.
        (WTF::appendDoubleQuotedString): Renamed from doubleQuoteString,
        reordered arguments to make sense as an append function, take a
        StringView instead of a String, used early exit to make the code
        a bit easier to read. Use the ASCIIHexDigit functions to construct
        a hex number a nibble at a time rather than using String::format.
        (WTF::JSONImpl::Value::writeJSON const): Update for name change.
        (WTF::JSONImpl::ObjectBase::writeJSON const): Ditto.

2019-01-31  Carlos Garcia Campos  <cgarcia@igalia.com>

        Unreviewed. Fix WPE compile warnings due to deprecated glib API.

        * wtf/Platform.h:

2019-01-29  Chris Dumez  <cdumez@apple.com>

        Make sure WTF::generateObjectIdentifier() internal counter does not get duplicated
        https://bugs.webkit.org/show_bug.cgi?id=193848

        Reviewed by Youenn Fablet.

        Move WTF::generateObjectIdentifier()'s internal counter out-of-line so make sure it never gets
        duplicated at each call site. This has caused some hard-to-debug issues with duplicate
        identifiers such as Bug 193761.

        Also move it to ObjectIdentifier and rename it to generate() as this make call sites nicer
        when they have a typedef for the ObjectIdentifier<T> type.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/ObjectIdentifier.cpp: Copied from Source/WebCore/platform/Process.cpp.
        (WTF::ObjectIdentifierBase::generateIdentifierInternal):
        (WTF::ObjectIdentifierBase::generateThreadSafeIdentifierInternal):
        * wtf/ObjectIdentifier.h:
        (WTF::ObjectIdentifier::generate):
        (WTF::ObjectIdentifier::generateThreadSafe):

2019-01-28  Ross Kirsling  <ross.kirsling@sony.com>

        Move platform-specific files out of WTF root directory.
        https://bugs.webkit.org/show_bug.cgi?id=193929

        Reviewed by Alex Christensen.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/PlatformGTK.cmake:
        * wtf/PlatformJSCOnly.cmake:
        * wtf/PlatformMac.cmake:
        * wtf/PlatformPlayStation.cmake:
        * wtf/PlatformWPE.cmake:
        * wtf/PlatformWin.cmake:
        * wtf/cf/RunLoopTimerCF.cpp: Renamed from Source/WTF/wtf/RunLoopTimerCF.cpp.
        * wtf/cf/SchedulePairCF.cpp: Renamed from Source/WTF/wtf/SchedulePairCF.cpp.
        * wtf/mac/SchedulePairMac.mm: Renamed from Source/WTF/wtf/SchedulePairMac.mm.
        * wtf/posix/OSAllocatorPOSIX.cpp: Renamed from Source/WTF/wtf/OSAllocatorPosix.cpp.
        * wtf/posix/ThreadingPOSIX.cpp: Renamed from Source/WTF/wtf/ThreadingPthreads.cpp.
        * wtf/win/CONTRIBUTORS.pthreads-win32: Renamed from Source/WTF/wtf/CONTRIBUTORS.pthreads-win32.
        * wtf/win/OSAllocatorWin.cpp: Renamed from Source/WTF/wtf/OSAllocatorWin.cpp.
        * wtf/win/ThreadSpecificWin.cpp: Renamed from Source/WTF/wtf/ThreadSpecificWin.cpp.
        * wtf/win/ThreadingWin.cpp: Renamed from Source/WTF/wtf/ThreadingWin.cpp.

2019-01-28  Andy Estes  <aestes@apple.com>

        [watchOS] Enable Parental Controls content filtering
        https://bugs.webkit.org/show_bug.cgi?id=193939
        <rdar://problem/46641912>

        Reviewed by Ryosuke Niwa.

        * wtf/Platform.h:

2019-01-28  Ross Kirsling  <ross.kirsling@sony.com>

        [JSCOnly][WTF] Expose FileSystem.
        https://bugs.webkit.org/show_bug.cgi?id=193789

        Reviewed by Don Olmstead.

        * wtf/FileSystem.h:
        * wtf/PlatformJSCOnly.cmake:
        * wtf/posix/FileSystemPOSIX.cpp:
        (WTF::FileSystemImpl::getVolumeFreeSpace):
        * wtf/win/FileSystemWin.cpp:
        (WTF::FileSystemImpl::fileSystemRepresentation):

2019-01-28  Eric Carlson  <eric.carlson@apple.com>

        AVStreamSession isn't always available, make a HAVE compile flag for it
        https://bugs.webkit.org/show_bug.cgi?id=193889
        <rdar://problem/47452863>

        Reviewed by Jer Noble.

        * wtf/FeatureDefines.h:

2018-12-15  Darin Adler  <darin@apple.com>

        Replace many uses of String::format with more type-safe alternatives
        https://bugs.webkit.org/show_bug.cgi?id=192742

        Reviewed by Mark Lam.

        * wtf/WorkQueue.cpp:
        (WTF::WorkQueue::concurrentApply): Use makeString.

        * wtf/dtoa.cpp:
        (WTF::dtoa): Use sprintf instead of String::format in the comments,
        since these functions have nothing to do with WTF::String.

2019-01-25  Chris Dumez  <cdumez@apple.com>

        [iOS] Add support for the download attribute
        https://bugs.webkit.org/show_bug.cgi?id=167341
        <rdar://problem/30296281>

        Reviewed by Geoffrey Garen.

        Turn on HTML download attribute support on iOS.

        * wtf/FeatureDefines.h:

2019-01-25  David Kilzer  <ddkilzer@apple.com>

        Move soft-linking of Lookup.framework out of LookupSPI.h
        <https://webkit.org/b/193815>

        Reviewed by Tim Horton.

        * wtf/cocoa/SoftLinking.h:
        (SOFT_LINK_CONSTANT_FOR_HEADER):
        (SOFT_LINK_CONSTANT_FOR_SOURCE_WITH_EXPORT):
        (SOFT_LINK_CONSTANT_MAY_FAIL_FOR_HEADER):
        - Remove local declaration of constant.  This should be handled
          by including *SPI.h or "real" headers.
        (SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE_WITH_EXPORT):
        - Remove local declaration of constant.
        - Rename from SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE() and add
          `export` argument to support exporting of functions.
        (SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE):
        - Redefine in terms of
          SOFT_LINK_CONSTANT_MAY_FAIL_FOR_SOURCE_WITH_EXPORT().

2019-01-24  Youenn Fablet  <youenn@apple.com>

        Use MonotonicTime in WorkerRunLoop
        https://bugs.webkit.org/show_bug.cgi?id=193417

        Reviewed by Saam Barati.

        * wtf/MessageQueue.h:
        (WTF::MessageQueue<DataType>::waitForMessage):
        (WTF::MessageQueue<DataType>::waitForMessageFilteredWithTimeout):

2019-01-24  Ross Kirsling  <ross.kirsling@sony.com>

        Move FileSystem to WTF
        https://bugs.webkit.org/show_bug.cgi?id=193602

        Reviewed by Yusuke Suzuki.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/FileMetadata.h: Renamed from Source/WebCore/platform/FileMetadata.h.
        * wtf/FileSystem.cpp: Renamed from Source/WebCore/platform/FileSystem.cpp.
        * wtf/FileSystem.h: Renamed from Source/WebCore/platform/FileSystem.h.
        * wtf/PlatformGTK.cmake:
        * wtf/PlatformMac.cmake:
        * wtf/PlatformPlayStation.cmake:
        * wtf/PlatformWPE.cmake:
        * wtf/PlatformWin.cmake:
        * wtf/cf/FileSystemCF.cpp: Renamed from Source/WebCore/platform/cf/FileSystemCF.cpp.
        * wtf/cocoa/FileSystemCocoa.mm: Renamed from Source/WebCore/platform/cocoa/FileSystemCocoa.mm.
        * wtf/glib/FileSystemGlib.cpp: Renamed from Source/WebCore/platform/glib/FileSystemGlib.cpp.
        * wtf/mac/FileSystemMac.mm: Renamed from Source/WebCore/platform/mac/FileSystemMac.mm.
        * wtf/posix/FileSystemPOSIX.cpp: Renamed from Source/WebCore/platform/posix/FileSystemPOSIX.cpp.
        * wtf/spi/mac/MetadataSPI.h: Renamed from Source/WebCore/PAL/pal/spi/mac/MetadataSPI.h.
        * wtf/win/FileSystemWin.cpp: Renamed from Source/WebCore/platform/win/FileSystemWin.cpp.
        * wtf/win/PathWalker.cpp: Renamed from Source/WebCore/platform/win/PathWalker.cpp.
        * wtf/win/PathWalker.h: Renamed from Source/WebCore/platform/win/PathWalker.h.

2019-01-24  Guillaume Emont  <guijemont@igalia.com>

        [JSC] Reenable baseline JIT on mips
        https://bugs.webkit.org/show_bug.cgi?id=192983

        Reviewed by Mark Lam.

        Use baseline JIT by default on MIPS.

        * wtf/Platform.h:

2019-01-24  David Kilzer  <ddkilzer@apple.com>

        Duplicate global variables: WTF::asciiCaseFoldTable
        <https://webkit.org/b/193726>
        <rdar://problem/47334622>

        Reviewed by Michael Catanzaro.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        - Add ASCIICType.cpp to build systems.

        * wtf/ASCIICType.cpp: Added.
        (WTF::asciiCaseFoldTable): Move table to here so there is only
        one copy.  Mark as exported for other frameworks to use.
        * wtf/ASCIICType.h:
        (WTF::asciiCaseFoldTable): Change to extern declaration, and
        mark as exported for other frameworks to use.

2019-01-23  Mark Lam  <mark.lam@apple.com>

        ARM64E should not ENABLE(SEPARATED_WX_HEAP).
        https://bugs.webkit.org/show_bug.cgi?id=193744
        <rdar://problem/46262952>

        Reviewed by Saam Barati.

        * wtf/Platform.h:

2019-01-23  David Kilzer  <ddkilzer@apple.com>

        Switch remaining CoreMedia soft-linking in WebKit over to CoreMediaSoftLink.{cpp,h}
        <https://webkit.org/b/193694>
        <rdar://problem/47464025>

        Reviewed by Tim Horton.

        * wtf/win/SoftLinking.h:
        (SOFT_LINK_CONSTANT_FOR_SOURCE_WITH_EXPORT):
        - Implement for Windows.
        (SOFT_LINK_CONSTANT_FOR_SOURCE):
        - Define using SOFT_LINK_CONSTANT_FOR_SOURCE_WITH_EXPORT().

2019-01-22  Tadeu Zagallo  <tzagallo@apple.com>

        Cache bytecode to disk
        https://bugs.webkit.org/show_bug.cgi?id=192782
        <rdar://problem/46084932>

        Reviewed by Keith Miller.

        BitVectors have to be friends with JSC::CacheBitVector to allow
        serializing its buffer as part of the bytecode cache encoding.

        * wtf/BitVector.h:

2019-01-21  Claudio Saavedra  <csaavedra@igalia.com>

        [GTK] Speculative build fix for Ubuntu LTS
        https://bugs.webkit.org/show_bug.cgi?id=193651

        Unreviewed build fix.

        * wtf/Assertions.h: Add missing <cstdlib> include.

2019-01-20  Saam Barati  <sbarati@apple.com>

        Rollout r240210: It broke tests on iOS
        https://bugs.webkit.org/show_bug.cgi?id=193640

        Unreviewed.

        * wtf/BitVector.h:

2019-01-20  Tadeu Zagallo  <tzagallo@apple.com>

        Cache bytecode to disk
        https://bugs.webkit.org/show_bug.cgi?id=192782
        <rdar://problem/46084932>

        Reviewed by Keith Miller.

        BitVectors have to be friends with JSC::CacheBitVector to allow
        serializing its buffer as part of the bytecode cache encoding.

        * wtf/BitVector.h:

2019-01-18  Tim Horton  <timothy_horton@apple.com>

        Get rid of ADVANCED_SPELL_CHECKING
        https://bugs.webkit.org/show_bug.cgi?id=193592

        Reviewed by Wenson Hsieh.

        * wtf/Platform.h:

2019-01-18  Jer Noble  <jer.noble@apple.com>

        SDK_VARIANT build destinations should be separate from non-SDK_VARIANT builds
        https://bugs.webkit.org/show_bug.cgi?id=189553

        Reviewed by Tim Horton.

        * Configurations/Base.xcconfig:
        * Configurations/SDKVariant.xcconfig: Added.

2019-01-18  Keith Miller  <keith_miller@apple.com>

        Gigacages should start allocations from a slide
        https://bugs.webkit.org/show_bug.cgi?id=193523

        Reviewed by Mark Lam.

        This patch changes some macros into constants since macros are the
        devil.

        * wtf/Gigacage.cpp:
        * wtf/Gigacage.h:

2019-01-18  Matt Lewis  <jlewis3@apple.com>

        Unreviewed, rolling out r240160.

        This broke multiple internal builds.

        Reverted changeset:

        "Gigacages should start allocations from a slide"
        https://bugs.webkit.org/show_bug.cgi?id=193523
        https://trac.webkit.org/changeset/240160

2019-01-18  Keith Miller  <keith_miller@apple.com>

        Gigacages should start allocations from a slide
        https://bugs.webkit.org/show_bug.cgi?id=193523

        Reviewed by Mark Lam.

        This patch changes some macros into constants since macros are the
        devil.

        * wtf/Gigacage.cpp:
        * wtf/Gigacage.h:

2019-01-17  Truitt Savell  <tsavell@apple.com>

        Unreviewed, rolling out r240124.

        This commit broke an internal build.

        Reverted changeset:

        "SDK_VARIANT build destinations should be separate from non-
        SDK_VARIANT builds"
        https://bugs.webkit.org/show_bug.cgi?id=189553
        https://trac.webkit.org/changeset/240124

2019-01-17  Jer Noble  <jer.noble@apple.com>

        SDK_VARIANT build destinations should be separate from non-SDK_VARIANT builds
        https://bugs.webkit.org/show_bug.cgi?id=189553

        Reviewed by Tim Horton.

        * Configurations/Base.xcconfig:
        * Configurations/SDKVariant.xcconfig: Added.

2019-01-16  Keith Miller  <keith_miller@apple.com>

        bmalloc should use JSC VM tag for gigacage
        https://bugs.webkit.org/show_bug.cgi?id=193496

        Reviewed by Mark Lam.

        Move most of the macros for vm tagging to bmalloc.

        * wtf/VMTags.h:

2019-01-16  Alberto Garcia  <berto@igalia.com>

        [WTF] Compilation fails with system malloc
        https://bugs.webkit.org/show_bug.cgi?id=172445

        Reviewed by Michael Catanzaro.

        Follow-up to r217270. The sysinfo() system call is specific to
        Linux so update the #ifdef checks accordingly.

        * wtf/RAMSize.cpp:
        (WTF::computeRAMSize):

2019-01-15  Chris Dumez  <cdumez@apple.com>

        Unreviewed, revert part of r239997 as it is not needed to fix the build.

        * wtf/RefCounter.h:

2019-01-15  Alex Christensen  <achristensen@webkit.org>

        Fix iOS build after r239993
        https://bugs.webkit.org/show_bug.cgi?id=193361

        * wtf/RefCounter.h:

2019-01-14  Michael Catanzaro  <mcatanzaro@igalia.com>

        Use unorm2_normalize instead of precomposedStringWithCanonicalMapping in userVisibleString
        https://bugs.webkit.org/show_bug.cgi?id=192945

        Reviewed by Alex Christensen.

        Replace use of the nice NSString function precomposedStringWithCanonicalMapping with the ICU
        API unorm2_normalize. This is to prep the code for translation to cross-platform C++. Of
        course this is much worse than the preexisting code, but this is just a transitional
        measure and not the final state of the code. It wouldn't make sense to do this if the code
        were to remain Objective C++.

        * wtf/cocoa/NSURLExtras.mm:
        (WTF::toNormalizationFormC):
        (WTF::userVisibleString):

2019-01-14  Alex Christensen  <achristensen@webkit.org>

        Bulgarian TLD should not punycode-encode URLs with Bulgarian Cyrillic characters
        https://bugs.webkit.org/show_bug.cgi?id=193411
        <rdar://problem/47215929>

        Reviewed by Alexey Proskuryakov.

        * wtf/cocoa/NSURLExtras.mm:
        (WTF::allCharactersAllowedByTLDRules):

2019-01-12  Timothy Hatcher  <timothy@apple.com>

        Have prefers-color-scheme: light always match on macOS versions before Mojave.
        https://bugs.webkit.org/show_bug.cgi?id=191655
        rdar://problem/46074680

        Reviewed by Megan Gardner.

        * wtf/Platform.h: Define HAVE_OS_DARK_MODE_SUPPORT on macOS 10.14.

2019-01-11  David Kilzer  <ddkilzer@apple.com>

        Follow-up: WorkQueue::concurrentApply() passes a raw pointer to a temporary String to Thread::create().
        https://bugs.webkit.org/show_bug.cgi?id=191350

        * wtf/WorkQueue.cpp:
        (WTF::WorkQueue::concurrentApply): Fix whitespace.

2019-01-11  Devin Rousso  <drousso@apple.com>

        Fix style CFNetworkSPI style checker warnings from r239698
        https://bugs.webkit.org/show_bug.cgi?id=193369

        Reviewed by Joseph Pecoraro.

        * wtf/Platform.h:

2019-01-11  Said Abou-Hallawa  <sabouhallawa@apple.com>

        WorkQueue::concurrentApply() passes a raw pointer to a temporary String to Thread::create().
        https://bugs.webkit.org/show_bug.cgi?id=191350

        Reviewed by Brent Fulgham.

        The non COCOA version of WorkQueue::concurrentApply() creates a temporary
        String for the threadName and passes the raw pointer of this String to
        Thread::create(). After freeing this String, Thread::entryPoint() uses
        the raw char pointer to internally initialize the thread.

        The fix is to use a single literal string for all the threads' names since
        they are created for a thread-pool.

        * wtf/WorkQueue.cpp:
        (WTF::WorkQueue::concurrentApply):

2019-01-11  Dominik Infuehr  <dinfuehr@igalia.com>

        Enable DFG on ARM/Linux again
        https://bugs.webkit.org/show_bug.cgi?id=192496

        Reviewed by Yusuke Suzuki.

        After changing the bytecode format DFG was disabled on all 32-bit
        architectures. Enable DFG now again on ARM/Linux.

        * wtf/Platform.h:

2019-01-10  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r239825.
        https://bugs.webkit.org/show_bug.cgi?id=193330

        Broke tests on armv7/linux bots (Requested by guijemont on
        #webkit).

        Reverted changeset:

        "Enable DFG on ARM/Linux again"
        https://bugs.webkit.org/show_bug.cgi?id=192496
        https://trac.webkit.org/changeset/239825

2019-01-10  John Wilander  <wilander@apple.com>

        Override the session configuration for cookieAcceptPolicy
        https://bugs.webkit.org/show_bug.cgi?id=190925
        <rdar://problem/45497382>

        Reviewed by Alexey Proskuryakov and Alex Christensen.

        * wtf/Platform.h:
            Definition of HAVE_CFNETWORK_OVERRIDE_SESSION_COOKIE_ACCEPT_POLICY.

2019-01-10  Dominik Infuehr  <dinfuehr@igalia.com>

        Enable DFG on ARM/Linux again
        https://bugs.webkit.org/show_bug.cgi?id=192496

        Reviewed by Yusuke Suzuki.

        After changing the bytecode format DFG was disabled on all 32-bit
        architectures. Enable DFG now again on ARM/Linux.

        * wtf/Platform.h:

2019-01-10  Carlos Garcia Campos  <cgarcia@igalia.com>

        [FreeType] Color emoji not properly supported
        https://bugs.webkit.org/show_bug.cgi?id=191976

        Reviewed by Michael Catanzaro.

        Add a name for combining enclosing keycap character.

        * wtf/unicode/CharacterNames.h:

2019-01-09  Carlos Eduardo Ramalho  <cadubentzen@gmail.com> and Fujii Hironori  <Hironori.Fujii@sony.com>

        Use directory local sequential numbers for Unified Sources filenames instead of global sequential numbers for CMake
        https://bugs.webkit.org/show_bug.cgi?id=192391

        Reviewed by Don Olmstead.

        Unified Source Builds are using global sequential numbers for
        bundle filenames UnifiedSource{sequential-number}.cpp. As the
        result, every new source file added would shift the next ones and
        prevent compiler caches from speeding up consecutive builds e.g.
        in git-bisect sessions.

        Changed it to directory local sequential numbers,
        UnifiedSource-{hash-of-dir-name}-{sequential-number-within-the-dir}.cpp.

        This is affecting only CMake builds which is where no
        '--max-cpp-bundle-count' nor '--max-obj-c-bundle-count' options
        are set. Xcode builds still use the old convention.

        * Scripts/generate-unified-source-bundles.rb: Add new instance
        variables @currentDirectory and @extraFiles to BundleManager.
        Still use global sequential numbers if --max-cpp-bundle-count or
        --max-obj-c-bundle-count is given.

2019-01-09  Alex Christensen  <achristensen@webkit.org>

        Expand use of sourceApplicationAuditData
        https://bugs.webkit.org/show_bug.cgi?id=192995
        <rdar://problem/46627875>

        Reviewed by Brady Eidson.

        * wtf/Platform.h:

2019-01-09  Mark Lam  <mark.lam@apple.com>

        Gigacage disabling checks should handle the GIGACAGE_ALLOCATION_CAN_FAIL case properly.
        https://bugs.webkit.org/show_bug.cgi?id=193292
        <rdar://problem/46485450>

        Reviewed by Yusuke Suzuki.

        Update the USE_SYSTEM_MALLOC version of Gigacage.h to match the bmalloc version.

        * wtf/Gigacage.h:

2019-01-07  David Kilzer  <ddkilzer@apple.com>

        Prefer RetainPtr<NSObject> to RetainPtr<NSObject *>
        <https://webkit.org/b/193056>

        Reviewed by Alex Christensen.

        * wtf/RetainPtr.h:
        (WTF::RetainPtr<T>::HelperPtrType):
        - Use C++ template metaprogramming to define a shared return
          type for adoptNS() and retainPtr() that uses
          RetainPtr<NSObject> instead of RetainPtr<NSObject *>.  The
          non-Objective-C typedef is used with retainPtr() for CFTypeRef
          objects.
        (WTF::adoptNS):
        - Only make declarations available when compilng with
          Objective-C.  The inline implementation is only available for
          Objective-C, so this makes the declarations consistent.
        - Change return type to remove '*' from NS types using
          RetainPtr<T>::HelperPtrType.
        (WTF::retainPtr):
        - Change return type to remove '*' from NS types using
          RetainPtr<T>::HelperPtrType.

        * wtf/SchedulePair.h:
        - Remove '*' from RetainPtr<> type.

2019-01-07  Eric Carlson  <eric.carlson@apple.com>

        A MediaTime timescale must never be zero
        https://bugs.webkit.org/show_bug.cgi?id=193156
        <rdar://problem/32504501>

        Reviewed by Jer Noble.

        * wtf/MediaTime.cpp:
        (WTF::greatestCommonDivisor): ASSERT if either parameter or return value is zero.
        (WTF::MediaTime::MediaTime): Create +/- infinity if passed zero timescale.
        (WTF::MediaTime::createWithFloat): Ditto.
        (WTF::MediaTime::createWithDouble): Ditto.
        (WTF::MediaTime::setTimeScale): Ditto.

2019-01-02  Alex Christensen  <achristensen@webkit.org>

        Homograph with LATIN SMALL LETTER R WITH FISHHOOK
        https://bugs.webkit.org/show_bug.cgi?id=192944

        Reviewed by Tim Horton.

        * wtf/cocoa/NSURLExtras.mm:
        (WTF::isLookalikeCharacter):

2019-01-02  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r239524.
        https://bugs.webkit.org/show_bug.cgi?id=193083

        basic browsing seems not to work (Requested by thorton on
        #webkit).

        Reverted changeset:

        "Expand use of sourceApplicationAuditData"
        https://bugs.webkit.org/show_bug.cgi?id=192995
        https://trac.webkit.org/changeset/239524

2018-12-28  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        Add ENABLE_UNIFIED_BUILDS option to cmake ports
        https://bugs.webkit.org/show_bug.cgi?id=193045

        Reviewed by Don Olmstead.

        * Scripts/generate-unified-source-bundles.rb:

2018-12-27  Alex Christensen  <achristensen@webkit.org>

        Resurrect Mac CMake build
        https://bugs.webkit.org/show_bug.cgi?id=192658

        Reviewed by Yusuke Suzuki.

        * wtf/PlatformMac.cmake:
        * wtf/cf/CFURLExtras.cpp:
        * wtf/cf/CFURLExtras.h:
        * wtf/cf/URLCF.cpp:
        * wtf/cocoa/NSURLExtras.h:
        * wtf/cocoa/NSURLExtras.mm:
        * wtf/cocoa/URLCocoa.mm:

2018-12-21  Dan Bernstein  <mitz@apple.com>

        Fixed building for macOS 10.13 using the macOS 10.14 SDK.

        * wtf/Platform.h: Changed HAVE_AUTHORIZATION_STATUS_FOR_MEDIA_TYPE to depend on the
          deployment target, not the SDK.

2018-12-20  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        [JSC] Implement "well-formed JSON.stringify" proposal
        https://bugs.webkit.org/show_bug.cgi?id=191677

        Reviewed by Darin Adler.

        This patch implements "well-formed JSON.stringify" proposal[1], which is now stage 3.
        JSON.stringify appended surrogate pair codes even if it is not paired appropriately.
        The proposal requires that broken surrogate pairs are unicode-escaped.

        [1]: https://github.com/tc39/proposal-well-formed-stringify

        * wtf/text/StringBuilderJSON.cpp:
        (WTF::appendQuotedJSONStringInternal):

2018-12-21  Alex Christensen  <achristensen@webkit.org>

        Expand use of sourceApplicationAuditData
        https://bugs.webkit.org/show_bug.cgi?id=192995
        <rdar://problem/46627875>

        Reviewed by Brady Eidson.

        * wtf/Platform.h:

2018-12-21  Alex Christensen  <achristensen@webkit.org>

        Revert r239503.
        https://bugs.webkit.org/show_bug.cgi?id=192944

        * wtf/cocoa/NSURLExtras.mm:
        (WTF::isLookalikeCharacter):

2018-12-20  Brent Fulgham  <bfulgham@apple.com>

        Show punycode if URL contains Latin small letter dotless i
        https://bugs.webkit.org/show_bug.cgi?id=192944
        <rdar://problem/46103047>

        Reviewed by Andy Estes.

        Revise our "lookalike character" logic to include the small Latin
        dotless i character.

        Test: fast/url/host.html

        * wtf/cocoa/NSURLExtras.mm:
        (WTF::isLookalikeCharacter):

2018-12-20  Chris Dumez  <cdumez@apple.com>

        Use Optional::hasValue() instead of Optional::has_value()
        https://bugs.webkit.org/show_bug.cgi?id=192948

        Reviewed by Tim Horton.

        * wtf/Hasher.h:
        (WTF::add):
        * wtf/Optional.h:

2018-12-20  Chris Dumez  <cdumez@apple.com>

        Use Optional::valueOr() instead of Optional::value_or()
        https://bugs.webkit.org/show_bug.cgi?id=192933

        Reviewed by Geoffrey Garen.

        * wtf/Optional.h:
        (WTF::Optional<T::valueOr const):

2018-12-20  Tadeu Zagallo  <tzagallo@apple.com>

        Consistently use MaxLength for all WTF strings
        https://bugs.webkit.org/show_bug.cgi?id=192853
        <rdar://problem/45726906>

        Reviewed by Mark Lam.

        MaxLength was introduced to be INT_MAX for WTF::String and StringImpl,
        but all the assertions were still done using UINT_MAX. Change it to
        use MaxLength for all checks.

        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::createUninitializedInternalNonEmpty):
        (WTF::StringImpl::reallocateInternal):
        (WTF::StringImpl::create):
        (WTF::StringImpl::convertToLowercaseWithoutLocale):
        (WTF::StringImpl::convertToUppercaseWithoutLocale):
        (WTF::StringImpl::convertToLowercaseWithLocale):
        (WTF::StringImpl::convertToUppercaseWithLocale):
        (WTF::StringImpl::foldCase):
        (WTF::StringImpl::find):
        (WTF::StringImpl::replace):
        (WTF::StringImpl::utf8ForCharacters):
        (WTF::StringImpl::tryGetUtf8ForRange const):
        * wtf/text/StringImpl.h:
        (WTF::lengthOfNullTerminatedString):
        (WTF::StringImpl::tryCreateUninitialized):
        (WTF::StringImpl::adopt):
        (WTF::StringImpl::maxInternalLength):
        * wtf/text/WTFString.cpp:
        (WTF::String::append):
        (WTF::String::insert):
        (WTF::String::fromUTF8):
        * wtf/text/WTFString.h:
        (WTF::String::reverseFind const):

2018-12-19  Chris Dumez  <cdumez@apple.com>

        wtf/Optional.h: move-constructor and move-assignment operator should disengage the value being moved from
        https://bugs.webkit.org/show_bug.cgi?id=192728
        <rdar://problem/46746779>

        Reviewed by Geoff Garen.

        Update optional's move-constructor and move-assignment operator to disengage the value being moved from.
        Rename to optional to Optional, make_optional() to makeOptional(), and move class from std to WTF namespace.

        Based on patch by David Kilzer.

        * wtf/*:

2018-12-19  Eric Carlson  <eric.carlson@apple.com>

        [MediaStream] Force system camera/microphone TCC prompt if necessary
        https://bugs.webkit.org/show_bug.cgi?id=192820
        <rdar://problem/42680098>

        Reviewed by Jer Noble.

        * wtf/Platform.h: Define HAVE_AUTHORIZATION_STATUS_FOR_MEDIA_TYPE.

2018-12-17  Chris Fleizach  <cfleizach@apple.com>

        Some builds are broken after r239262
        https://bugs.webkit.org/show_bug.cgi?id=192777

        Reviewed by Simon Fraser.

        * wtf/Platform.h:

2018-12-17  Daniel Bates  <dabates@apple.com>

        Support concatenating StringView with other string types
        https://bugs.webkit.org/show_bug.cgi?id=177566

        Reviewed by Darin Adler.

        Add operator+ overloads to StringOperators.h to support concatenating a StringView with
        other string types (e.g. String). This lets a person write more naturally looking code:

        stringView + string

        Instead of:

        makeString(stringView, string)

        * wtf/text/StringOperators.h:
        (WTF::operator+): Added various operator+ overloads.

2018-12-17  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r239265 and r239274.
        https://bugs.webkit.org/show_bug.cgi?id=192765

        unorm_normalize is deprecated, and broke an internal build
        (Requested by Truitt on #webkit).

        Reverted changesets:

        "[GTK][WPE] Need a function to convert internal URI to display
        ("pretty") URI"
        https://bugs.webkit.org/show_bug.cgi?id=174816
        https://trac.webkit.org/changeset/239265

        "Fix the Apple Internal Mac build with a newer SDK"
        https://trac.webkit.org/changeset/239274

2018-12-17  Daniel Bates  <dabates@apple.com>

        Fix the Apple Internal Mac build with a newer SDK

        * wtf/URLHelpers.cpp:
        (WTF::URLHelpers::userVisibleURL):

2018-12-17  Matt Lewis  <jlewis3@apple.com>

        Unreviewed, rolling out r239254.

        This broke the Windows 10 Debug build

        Reverted changeset:

        "Replace many uses of String::format with more type-safe
        alternatives"
        https://bugs.webkit.org/show_bug.cgi?id=192742
        https://trac.webkit.org/changeset/239254

2018-12-17  Ms2ger  <Ms2ger@igalia.com>

        [GTK][WPE] Need a function to convert internal URI to display ("pretty") URI
        https://bugs.webkit.org/show_bug.cgi?id=174816

        Reviewed by Michael Catanzaro.

        Translate userVisibleString and dependent code into platform-neutral C++
        in wtf/URLHelpers.{h,cpp}.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/URLHelpers.cpp: Added.
        (WTF::URLHelpers::loadIDNScriptWhiteList):
        (WTF::URLHelpers::isArmenianLookalikeCharacter):
        (WTF::URLHelpers::isArmenianScriptCharacter):
        (WTF::URLHelpers::isASCIIDigitOrValidHostCharacter):
        (WTF::URLHelpers::isLookalikeCharacter):
        (WTF::URLHelpers::whiteListIDNScript):
        (WTF::URLHelpers::initializeDefaultIDNScriptWhiteList):
        (WTF::URLHelpers::allCharactersInIDNScriptWhiteList):
        (WTF::URLHelpers::isSecondLevelDomainNameAllowedByTLDRules):
        (WTF::URLHelpers::isRussianDomainNameCharacter):
        (WTF::URLHelpers::allCharactersAllowedByTLDRules):
        (WTF::URLHelpers::mapHostName):
        (WTF::URLHelpers::collectRangesThatNeedMapping):
        (WTF::URLHelpers::applyHostNameFunctionToMailToURLString):
        (WTF::URLHelpers::applyHostNameFunctionToURLString):
        (WTF::URLHelpers::mapHostNames):
        (WTF::URLHelpers::createStringWithEscapedUnsafeCharacters):
        (WTF::URLHelpers::userVisibleURL):
        * wtf/URLHelpers.h: Added.
        * wtf/cocoa/NSURLExtras.mm:
        (WTF::URLHelpers::loadIDNScriptWhiteList):
        (WTF::decodePercentEscapes):
        (WTF::decodeHostName):
        (WTF::encodeHostName):
        (WTF::URLWithUserTypedString):
        (WTF::userVisibleString):

2018-12-15  Darin Adler  <darin@apple.com>

        Use warning-ignoring macros more consistently and simply
        https://bugs.webkit.org/show_bug.cgi?id=192743

        Reviewed by Mark Lam.

        * wtf/Assertions.h: Use IGNORE_WARNINGS_BEGIN rather than
        IGNORE_CLANG_WARNINGS_BEGIN since we don't need special handling for
        non-clang compilers, in part since the code is already inside
        #if COMPILER(CLANG), but also because it would be harmless to ignore this
        warning on non-clang; we should almost never use IGNORE_CLANG_WARNINGS_BEGIN.

2018-12-15  Darin Adler  <darin@apple.com>

        Replace many uses of String::format with more type-safe alternatives
        https://bugs.webkit.org/show_bug.cgi?id=192742

        Reviewed by Mark Lam.

        * wtf/WorkQueue.cpp:
        (WTF::WorkQueue::concurrentApply): Use makeString.

        * wtf/dtoa.cpp:
        (WTF::dtoa): Use sprintf instead of String::format in the comments,
        since these functions have nothing to do with WTF::String.

2018-12-14  Darin Adler  <darin@apple.com>

        Verify size is valid in USE_SYSTEM_MALLOC version of tryAllocateZeroedVirtualPages
        https://bugs.webkit.org/show_bug.cgi?id=192738
        rdar://problem/37502342

        Reviewed by Mark Lam.

        * wtf/Gigacage.cpp:
        (Gigacage::tryAllocateZeroedVirtualPages): Added a RELEASE_ASSERT just
        like the one in tryLargeZeroedMemalignVirtual in bmalloc.

2018-12-14  David Kilzer  <ddkilzer@apple.com>

        clang-tidy: Fix unnecessary copy of AtomicString each time one is logged
        <https://webkit.org/b/192710>
        <rdar://problem/46738962>

        Reviewed by Eric Carlson.

        * wtf/Logger.h:
        (WTF::LogArgument::toString): Make argument a const reference to
        avoid the copy.

2018-12-14  Zan Dobersek  <zdobersek@igalia.com>

        [GLib] RunLoop::dispatchAfter() GSource requires microsecond precision
        https://bugs.webkit.org/show_bug.cgi?id=192696

        Reviewed by Michael Catanzaro.

        The GSource we set up in GLib's RunLoop::dispatchAfter() implementation
        should support microsecond-precision delays. Such delays are common in
        JSC's Watchdog implementation and missing support for them has been
        causing test failures in the `testapi` program as well as some JSC
        tests that depend on the termination determination functionality of the
        JSC::Watchdog class.

        RunLoop::dispatchAfter() is changed to spawn a raw GSource that uses the
        existing GSourceFuncs implementation used elsewhere in GLib's RunLoop.
        The GSource's ready time is set manually, now with the necessary
        microsecond precision.

        * wtf/glib/RunLoopGLib.cpp:
        (WTF::RunLoop::dispatchAfter):

2018-12-13  Saam Barati  <sbarati@apple.com>

        The JSC shell should listen for memory pressure events and respond to them
        https://bugs.webkit.org/show_bug.cgi?id=192647

        Reviewed by Keith Miller.

        * wtf/MemoryPressureHandler.cpp:
        (WTF::MemoryPressureHandler::MemoryPressureHandler):
        (WTF::MemoryPressureHandler::setDispatchQueue):
        Make it so that we can customize which dispatch queue memory pressure
        events get handled on.

        * wtf/MemoryPressureHandler.h:
        (WTF::MemoryPressureHandler::setShouldLogMemoryMemoryPressureEvents):
        Make it so that we can disable logging that happens on each memory
        pressure event.

        * wtf/cocoa/MemoryPressureHandlerCocoa.mm:
        (WTF::MemoryPressureHandler::install):
        (WTF::MemoryPressureHandler::uninstall):
        (WTF::MemoryPressureHandler::holdOff):

2018-12-13  David Kilzer  <ddkilzer@apple.com>

        clang-tidy: Fix unnecessary parameter copies in ParallelHelperPool.cpp
        <https://webkit.org/b/192666>
        <rdar://problem/46697952>

        Reviewed by Alex Christensen.

        * wtf/ParallelHelperPool.cpp:
        (WTF::ParallelHelperClient::ParallelHelperClient): Use rvalue
        reference and WTFMove().
        (WTF::ParallelHelperClient::setTask): Ditto.
        (WTF::ParallelHelperClient::runTaskInParallel): Ditto.
        (WTF::ParallelHelperClient::runTask): Use const reference.
        * wtf/ParallelHelperPool.h: Update declarations to match
        implementations.

2018-12-12  Alex Christensen  <achristensen@webkit.org>

        Implement safe browsing in WebKit on WatchOS
        https://bugs.webkit.org/show_bug.cgi?id=192641
        <rdar://problem/46376188>

        Reviewed by Geoff Garen.

        * wtf/Platform.h:
        WatchOS has safe browsing, too!

2018-12-11  Fujii Hironori  <Hironori.Fujii@sony.com>

        [Win][Clang] Fix compilation warnings of WTF
        https://bugs.webkit.org/show_bug.cgi?id=192583

        Reviewed by Alex Christensen.

        clang-cl reports the following warnings.

        > [92/206] Building CXX object Source\WTF\wtf\CMakeFiles\WTF.dir\StackBounds.cpp.obj
        > ..\..\Source\WTF\wtf\StackBounds.cpp(163,48):  warning: missing field 'AllocationBase' initializer [-Wmissing-field-initializers]
        >     MEMORY_BASIC_INFORMATION stackOrigin = { 0 };
        >                                                ^
        > 1 warning generated.
        > [160/206] Building CXX object Source\WTF\wtf\CMakeFiles\WTF.dir\win\RunLoopWin.cpp.obj
        > ..\..\Source\WTF\wtf\win\RunLoopWin.cpp(34,54):  warning: ISO C++11 does not allow conversion from string literal to 'const LPWSTR' (aka 'wchar_t *const') [-Wwritable-strings]
        > static const LPWSTR kRunLoopMessageWindowClassName = L"RunLoopMessageWindow";
        >                                                      ^
        > ..\..\Source\WTF\wtf\win\RunLoopWin.cpp(86,32):  warning: missing field 'lpfnWndProc' initializer [-Wmissing-field-initializers]
        >     WNDCLASS windowClass = { 0 };
        >                                ^
        > 2 warnings generated.
        > [175/206] Building CXX object Source\WTF\wtf\CMakeFiles\WTF.dir\DateMath.cpp.obj
        > ..\..\Source\WTF\wtf\DateMath.cpp(125,20):  warning: unused function 'getLocalTime' [-Wunused-function]
        > static inline void getLocalTime(const time_t* localTime, struct tm* localTM)
        >                    ^
        > 1 warning generated.

        * wtf/DateMath.cpp:
        (WTF::getLocalTime): Defined only if used.
        * wtf/StackBounds.cpp:
        (WTF::StackBounds::currentThreadStackBoundsInternal): Initialize stackOrigin with '{ }'.
        * wtf/win/RunLoopWin.cpp: Change the type of kRunLoopMessageWindowClassName to LPCWSTR.
        (WTF::RunLoop::registerRunLoopMessageWindowClass): Initialize windowClass with '{ }'.

2018-12-11  Andy Estes  <aestes@apple.com>

        Introduce makeBlockPtr for lambdas
        https://bugs.webkit.org/show_bug.cgi?id=192594

        Reviewed by Alex Christensen.

        BlockPtr<...>::fromCallable is cumbersome because it requires repeating the callable's
        signature as a class template argument. This patch introduces an overload of makeBlockPtr
        that deduces the correct BlockPtr instantiation from a lambda's operator() signature.

        * wtf/BlockPtr.h:
        (WTF::makeBlockPtr):

        Adopted makeBlockPtr.

        * wtf/cocoa/WorkQueueCocoa.cpp:
        (WTF::WorkQueue::dispatch):
        (WTF::WorkQueue::dispatchAfter):
        (WTF::WorkQueue::concurrentApply):

2018-12-10  Don Olmstead  <don.olmstead@sony.com>

        Move ENABLE_RESOURCE_LOAD_STATISTICS to FeatureDefines.xcconfig
        https://bugs.webkit.org/show_bug.cgi?id=192573

        Reviewed by Simon Fraser.

        Remove ENABLE_RESOURCE_LOAD_STATISTICS from Platform.h and instead rely
        on it being set in FeatureDefines.xcconfig.

        * wtf/Platform.h:

2018-12-10  Alexey Proskuryakov  <ap@apple.com>

        Move ENABLE_SEC_ITEM_SHIM out of WebKit's config.h
        https://bugs.webkit.org/show_bug.cgi?id=192428

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2018-12-10  Alexey Proskuryakov  <ap@apple.com>

        Move more macros out of WebKit's config.h
        https://bugs.webkit.org/show_bug.cgi?id=192430

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2018-12-09  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        Unreviewed, fix build failure on GCC 8.2, part 2

        Add RefCountedArray::assign, and use it instead of operator= internally.
        We should have operator=(const RefCountedArray&) since it will be automatically generated
        if we do not have correct implementation here.

        * wtf/RefCountedArray.h:
        (WTF::RefCountedArray::operator=):
        (WTF::RefCountedArray::assign):

2018-12-09  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        Unreviewed, fix build failure on GCC 8.2

        We remove operator=<PtrTraits> call since it is not necessary.
        This is a workaround. It seems that GCC 8.2 fails to parse this specialization.

        * wtf/RefCountedArray.h:

2018-12-08  Darin Adler  <darin@apple.com>

        Fix stray-semicolon warning seen with a new version of clang in Xcode
        https://bugs.webkit.org/show_bug.cgi?id=192534

        Reviewed by Alexey Proskuryakov.

        * wtf/Lock.h: Removed an unneeded semicolon.

2018-12-08  Adrian Perez de Castro  <aperez@igalia.com>

        [WTF] Debug build fails due conflicting abort() method
        https://bugs.webkit.org/show_bug.cgi?id=192491

        Reviewed by Michael Catanzaro.

        * wtf/Assertions.h: Use namespaced std::abort() insted of plain abort() to avoid clashes
        inside classes which have an ::abort() method, but only when __cplusplus is defined to
        allow inclusion of the header in plain C sources.

2018-12-07  Andy Estes  <aestes@apple.com>

        [Cocoa] Add optional variants of SOFT_LINK_CLASS_FOR_SOURCE
        https://bugs.webkit.org/show_bug.cgi?id=192498

        Reviewed by Tim Horton.

        Added SOFT_LINK_CLASS_FOR_SOURCE_OPTIONAL and SOFT_LINK_CLASS_FOR_SOURCE_OPTIONAL_WITH_EXPORT,
        which behave like their non-optional variants but do not require their classes to exist.

        * wtf/cocoa/SoftLinking.h:

2018-12-06  Alexey Proskuryakov  <ap@apple.com>

        Move USE_NEW_THEME out of WebCore's config.h
        https://bugs.webkit.org/show_bug.cgi?id=192426

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2018-12-04  Carlos Garcia Campos  <cgarcia@igalia.com>

        [SOUP] Move URLSoup back to WebCore after r238771
        https://bugs.webkit.org/show_bug.cgi?id=192306

        Reviewed by Michael Catanzaro.

        In r238771 URL was moved from WebCore to WTF, including the soup implementation. Unfortunately that added
        libsoup as a new dependency of libjavascriptcoregtk.

        * wtf/PlatformGTK.cmake:
        * wtf/PlatformWPE.cmake:
        * wtf/URL.h:
        * wtf/glib/URLGLib.cpp: Copied from Source/WTF/wtf/glib/URLSoup.cpp.

2018-12-03  Don Olmstead  <don.olmstead@sony.com>

        Fix some unused parameter warnings
        https://bugs.webkit.org/show_bug.cgi?id=192336

        Reviewed by Fujii Hironori.

        * wtf/StackTrace.cpp:
        (WTFGetBacktrace):
        (WTF::StackTrace::demangle):
        * wtf/generic/MemoryPressureHandlerGeneric.cpp:
        (WTF::MemoryPressureHandler::holdOff):
        (WTF::MemoryPressureHandler::respondToMemoryPressure):

2018-12-01  Alexey Proskuryakov  <ap@apple.com>

        Modernize version check for _suppressedAutoAddedHTTPHeaders
        https://bugs.webkit.org/show_bug.cgi?id=192175

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2018-11-30  Alex Christensen  <achristensen@webkit.org>

        Fix Windows build after r238771
        https://bugs.webkit.org/show_bug.cgi?id=190234

        * wtf/URLParser.h:
        Just make defaultPortForProtocol public so we don't have to worry about DLL linkage.

2018-11-30  Alex Christensen  <achristensen@webkit.org>

        Move URL from WebCore to WTF
        https://bugs.webkit.org/show_bug.cgi?id=190234

        Reviewed by Keith Miller.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/Forward.h:
        * wtf/PlatformGTK.cmake:
        * wtf/PlatformMac.cmake:
        * wtf/PlatformWPE.cmake:
        * wtf/PlatformWin.cmake:
        * wtf/URL.cpp: Renamed from Source/WebCore/platform/URL.cpp.
        (WTF::URL::protocolIs):
        * wtf/URL.h: Renamed from Source/WebCore/platform/URL.h.
        * wtf/URLHash.h: Renamed from Source/WebCore/platform/URLHash.h.
        (WTF::URLHash::hash):
        (WTF::URLHash::equal):
        * wtf/URLParser.cpp: Renamed from Source/WebCore/platform/URLParser.cpp.
        (WTF::URLParser::isInUserInfoEncodeSet):
        (WTF::URLParser::parseAuthority):
        * wtf/URLParser.h: Renamed from Source/WebCore/platform/URLParser.h.
        (WTF::URLParser::URLParser):
        (WTF::URLParser::result):
        * wtf/cf/CFURLExtras.cpp: Renamed from Source/WebCore/platform/cf/CFURLExtras.cpp.
        * wtf/cf/CFURLExtras.h: Renamed from Source/WebCore/platform/cf/CFURLExtras.h.
        * wtf/cf/URLCF.cpp: Renamed from Source/WebCore/platform/cf/URLCF.cpp.
        * wtf/cocoa/NSURLExtras.h: Copied from Source/WebCore/loader/archive/ArchiveResourceCollection.h.
        * wtf/cocoa/NSURLExtras.mm: Copied from Source/WebCore/platform/mac/WebCoreNSURLExtras.mm.
        (WTF::isArmenianLookalikeCharacter):
        (WTF::isArmenianScriptCharacter):
        (WTF::isASCIIDigitOrValidHostCharacter):
        (WTF::isLookalikeCharacter):
        (WTF::whiteListIDNScript):
        (WTF::readIDNScriptWhiteListFile):
        (WTF::allCharactersInIDNScriptWhiteList):
        (WTF::isSecondLevelDomainNameAllowedByTLDRules):
        (WTF::isRussianDomainNameCharacter):
        (WTF::allCharactersAllowedByTLDRules):
        (WTF::mapHostNameWithRange):
        (WTF::hostNameNeedsDecodingWithRange):
        (WTF::hostNameNeedsEncodingWithRange):
        (WTF::decodeHostNameWithRange):
        (WTF::encodeHostNameWithRange):
        (WTF::decodeHostName):
        (WTF::encodeHostName):
        (WTF::collectRangesThatNeedMapping):
        (WTF::collectRangesThatNeedEncoding):
        (WTF::collectRangesThatNeedDecoding):
        (WTF::applyHostNameFunctionToMailToURLString):
        (WTF::applyHostNameFunctionToURLString):
        (WTF::mapHostNames):
        (WTF::stringByTrimmingWhitespace):
        (WTF::URLByTruncatingOneCharacterBeforeComponent):
        (WTF::URLByRemovingResourceSpecifier):
        (WTF::URLWithData):
        (WTF::dataWithUserTypedString):
        (WTF::URLWithUserTypedString):
        (WTF::URLWithUserTypedStringDeprecated):
        (WTF::hasQuestionMarkOnlyQueryString):
        (WTF::dataForURLComponentType):
        (WTF::URLByRemovingComponentAndSubsequentCharacter):
        (WTF::URLByRemovingUserInfo):
        (WTF::originalURLData):
        (WTF::createStringWithEscapedUnsafeCharacters):
        (WTF::userVisibleString):
        (WTF::isUserVisibleURL):
        (WTF::rangeOfURLScheme):
        (WTF::looksLikeAbsoluteURL):
        * wtf/cocoa/URLCocoa.mm: Renamed from Source/WebCore/platform/mac/URLMac.mm.
        (WTF::URL::URL):
        (WTF::URL::createCFURL const):
        * wtf/glib/GUniquePtrSoup.h: Renamed from Source/WebCore/platform/network/soup/GUniquePtrSoup.h.
        * wtf/glib/URLSoup.cpp: Renamed from Source/WebCore/platform/soup/URLSoup.cpp.

2018-11-30  Alexey Proskuryakov  <ap@apple.com>

        Move USE_CFNETWORK_IGNORE_HSTS to its proper place
        https://bugs.webkit.org/show_bug.cgi?id=192173

        Reviewed by Tim Horton.

        * wtf/Platform.h: Also renamed it to better match other version checks.

2018-11-29  Alexey Proskuryakov  <ap@apple.com>

        Modernize the check for kCFURLRequestContentDecoderSkipURLCheck existence
        https://bugs.webkit.org/show_bug.cgi?id=192041

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2018-11-28  Mark Lam  <mark.lam@apple.com>

        ENABLE_SEPARATED_WX_HEAP needs to be defined in Platform.h.
        https://bugs.webkit.org/show_bug.cgi?id=192110
        <rdar://problem/46317746>

        Reviewed by Saam Barati.

        Contrary my previous claim in r238564, ENABLE_SEPARATED_WX_HEAP needs to be
        defined in Platform.h because it is also needed in WebCore for the CSS JIT.  Also
        contrary to my previous claim, ENABLE(FAST_JIT_PERMISSIONS) is defined for WebCore
        (and other projects) as well as JSC.  Hence, there's no reason why
        ENABLE_SEPARATED_WX_HEAP cannot be defined in Platform.h.

        * wtf/Platform.h:

2018-11-28  Keith Rollin  <krollin@apple.com>

        Update generate-unified-source-bundles.rb to generate .xcfilelist files
        https://bugs.webkit.org/show_bug.cgi?id=192029
        <rdar://problem/46285918>

        Reviewed by Alex Christensen.

        Update generate-unified-source-bundles.rb to generate output for
        .xcfilelist files. These files are used to indicate the sets of input
        and output files to Run Script build phases in Xcode. By invoking
        generate-unified-source-bundles.rb with -generate-xcfilelists, the
        script generates these .xcfilelist files. These .xcfilelist files can
        then be used to specify the inputs and outputs of the Generate Unified
        Sources build phases.

        * Scripts/generate-unified-source-bundles.rb:

2018-11-28  Alexey Proskuryakov  <ap@apple.com>

        Remove another OS version check from NetworkDataTaskCocoa.mm
        https://bugs.webkit.org/show_bug.cgi?id=192046

        Reviewed by Alex Christensen.

        * wtf/Platform.h:

2018-11-28  Alexey Proskuryakov  <ap@apple.com>

        Modernize version checks for same site cookie support
        https://bugs.webkit.org/show_bug.cgi?id=192054

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2018-11-27  Alexey Proskuryakov  <ap@apple.com>

        Modernize the check for async _saveCookies existence
        https://bugs.webkit.org/show_bug.cgi?id=191987

        Reviewed by Dean Jackson.

        * wtf/Platform.h: Added a specific macro for this. Not changing the behavior here,
        although it seems very likely that we want to do the same on other iOS family OSes.

2018-11-26  Fujii Hironori  <Hironori.Fujii@sony.com>

        [Win][Clang] SOFT_LINK reports warning: implicit conversion between pointer-to-function and pointer-to-object is a Microsoft extension [-Wmicrosoft-cast]
        https://bugs.webkit.org/show_bug.cgi?id=191960

        Reviewed by Alex Christensen.

        * wtf/win/SoftLinking.h: Do reinterpret_cast<void*> a function
        pointer argument of EncodePointer. Changed the type of stored
        function pointer returned by EncodePointer.

2018-11-26  Sam Weinig  <sam@webkit.org>

        Streamline ListHashSet use in floating object code
        https://bugs.webkit.org/show_bug.cgi?id=191957

        Reviewed by Alex Christensen.

        * wtf/ListHashSet.h:
        Reverses the order of the template arguments for the find() and contains()
        overload that allow specifying a hash translator to allow the compiler to
        deduce type T. This simplifies call sites and matches other WTF containers.

2018-11-25  Michael Catanzaro  <mcatanzaro@igalia.com>

        CRASH() should call abort() except on Darwin and in developer builds
        https://bugs.webkit.org/show_bug.cgi?id=184408

        Reviewed by Daniel Bates.

        CRASH() should call abort() except on Darwin and in developer builds, as discussed on
        webkit-dev. This should be slightly nicer than dereferencing 0xbadbeef.

        On Darwin, CRASH() uses a breakpoint trap, which seems to corrupt the stack on Linux, so we
        can't do that.

        Continue to call WTFCrash() in developer mode, and make no changes to WTFCrash(), since it
        is reportedly useful in nightmare scenarios where core dumps are unavailable.

        We also have to define CRASH_UNDER_CONSTEXPR_CONTEXT(). It's a bit odd that it's possible to
        use a non-constexpr function here, but it works. Currently this macro uses WTFCrash(), which
        is also non-constexpr.

        * wtf/Assertions.h:

2018-11-25  Michael Catanzaro  <mcatanzaro@igalia.com>

        Unreviewed, rolling out r238469.

        Broke the build

        Reverted changeset:

        "CRASH() should call abort() except on Darwin and in developer
        builds"
        https://bugs.webkit.org/show_bug.cgi?id=184408
        https://trac.webkit.org/changeset/238469

2018-11-24  Andy Estes  <aestes@apple.com>

        [Cocoa] SOFT_LINK_CLASS_FOR_{HEADER,SOURCE} should generate a more concise getter function
        https://bugs.webkit.org/show_bug.cgi?id=191899

        Reviewed by Dean Jackson.

        Currently, SOFT_LINK_CLASS_FOR_HEADER declares a class getter function that includes the
        framework name. For example, NSView would have a class getter named
        namespace::get_AppKit_NSViewClass().

        Including the framework name in the getter is unnecessary. Objective-C classes already exist
        in a global namespace, so there is no need to disambiguate class names by framework. This
        patch elides the framework name from the getter function. For example, NSView would now have
        a getter named namespace::getNSViewClass().

        * wtf/cocoa/SoftLinking.h:

2018-11-24  Michael Catanzaro  <mcatanzaro@igalia.com>

        CRASH() should call abort() except on Darwin and in developer builds
        https://bugs.webkit.org/show_bug.cgi?id=184408

        Reviewed by Daniel Bates.

        CRASH() should call abort() except on Darwin and in developer builds, as discussed on
        webkit-dev. This should be slightly nicer than dereferencing 0xbadbeef.

        On Darwin, CRASH() uses a breakpoint trap, which seems to corrupt the stack on Linux, so we
        can't do that.

        Continue to call WTFCrash() in developer mode, and make no changes to WTFCrash(), since it
        is reportedly useful in nightmare scenarios where core dumps are unavailable.

        * wtf/Assertions.h:

2018-11-23  Sam Weinig  <sam@webkit.org>

        Add raw pointer overloads to ListHashSet via SmartPtr specialized functions
        https://bugs.webkit.org/show_bug.cgi?id=191936

        Reviewed by Zalan Bujtas.

        Adds overloads for find, contains, insertBefore and remove that take raw pointers
        when the value type V of a ListHashSet is true for the predicate IsSmartPtr<V>::value.
        This brings the interface to ListHashSet closer inline with HashSet, HashMap and HashCountedSet
        which already have this functionality. Like in the other collections, this is especially
        useful when using std::unique_ptr<> as the value, since there would be no way to pass it
        to these functions. One difference between this set of overloads is the inclusion of insertBefore,
        which is unique to ListHashSet. As would be expected, this specialization only changes the first
        parameter, the one that needs to be found, to support a raw pointer.  

        * wtf/ListHashSet.h:
        (WTF::U>::find):
        (WTF::U>::find const):
        (WTF::U>::contains const):
        (WTF::U>::insertBefore):
        (WTF::U>::remove):

2018-11-21  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        [JSC] Drop ARM_TRADITIONAL support in LLInt, baseline JIT, and DFG
        https://bugs.webkit.org/show_bug.cgi?id=191675

        Reviewed by Mark Lam.

        * wtf/InlineASM.h:
        * wtf/Platform.h:

2018-11-21  Andy Estes  <aestes@apple.com>

        [Cocoa] Create a soft-linking file for PassKit
        https://bugs.webkit.org/show_bug.cgi?id=191875
        <rdar://problem/46203215>

        Reviewed by Myles Maxfield.

        * wtf/Platform.h: Defined USE_PASSKIT.
        * wtf/cocoa/SoftLinking.h: Added _WITH_EXPORT variants of SOFT_LINK_FRAMEWORK_FOR_SOURCE,
        SOFT_LINK_PRIVATE_FRAMEWORK_FOR_SOURCE, SOFT_LINK_CLASS_FOR_SOURCE,
        SOFT_LINK_FUNCTION_FOR_SOURCE, and SOFT_LINK_CONSTANT_FOR_SOURCE.

2018-11-21  Dominik Infuehr  <dinfuehr@igalia.com>

        Enable JIT on ARM/Linux
        https://bugs.webkit.org/show_bug.cgi?id=191548

        Reviewed by Yusuke Suzuki.

        Enable JIT by default on ARMv7/Linux after it was disabled with
        recent bytcode format change.

        * wtf/Platform.h:

2018-11-14  Keith Rollin  <krollin@apple.com>

        Fix #end vs. #endif typo.
        https://bugs.webkit.org/show_bug.cgi?id=191668
        <rdar://problem/46081704>

        Reviewed by Alexey Proskuryakov.

        Source/WebCore/SourcesCocoa.txt had a #end that should have been a
        #endif. Fix this, an add a check to generate-unified-source-bundles.rb
        to detect similar typos.

        * Scripts/generate-unified-source-bundles.rb:

2018-11-12  Mark Lam  <mark.lam@apple.com>

        Add OOM detection to StringPrototype's substituteBackreferences().
        https://bugs.webkit.org/show_bug.cgi?id=191563
        <rdar://problem/45720428>

        Reviewed by Saam Barati.

        Enhanced StringBuilder::toString() to skip the shrinkToFit(), reifyString(), and
        the hasOverflowed() check if m_string is not null.  When m_string is not null,
        the StringBuilder either only has a single String in m_string (with m_buffer being 
        null), or reifyString() has already been called (resulting in a non-null m_string
        with a possibly non-null m_buffer).

        We can skip the overflow check because:
        1. if the StringBuilder only has a single String, then there cannot be an overflow.
        2. if reifyString() has already been called, then the hasOverflowed() checked has
           already been done because every code path that calls reifyString() first does
           the hasOverflowed() check.

        We can skip shrinkToFit() because it only applies to m_buffer.
        1. if the StringBuilder only has a single String, then there's no m_buffer to shrink.
        2. if reifyString() has already been called, then we either came down
           a. the toString() path with a null m_string previously, where we would have
              already called shrinkToFit() before reifyString(), or
           b. the toStringPreserveCapacity() path where we don't want to shrinkToFit().

        We can skip reifyString() because:
        1. if the StringBuilder only has a single String, then the string is already reified.
        2. if reifyString() has been already called, then the string is already reified.

        Note that if m_string is the null string and m_buffer is null, reifyString() will
        replace it with the empty string.  For this reason, we cannot solely check for
        !m_buffer because we need to reify the null string into the empty string.

        Note also that if m_string is null and m_buffer is non-null, reifyString() will
        create a String and set m_string to it.  However, m_buffer remains non-null.
        For this reason, we cannot assert !m_buffer alone when m_string is non-null.
        We add a m_isReified flag (only when assertions are enabled) to track the reified
        case where both m_buffer and m_string are non-null.

        * wtf/text/StringBuilder.cpp:
        (WTF::StringBuilder::reifyString const):
        * wtf/text/StringBuilder.h:
        (WTF::StringBuilder::toString):

2018-11-10  Benjamin Poulain  <benjamin@webkit.org>

        Fix a fixme: rename wtfObjcMsgSend to wtfObjCMsgSend
        https://bugs.webkit.org/show_bug.cgi?id=191492

        Reviewed by Alex Christensen.

        Because renaming ObjcRuntimeExtras.h to ObjCRuntimeExtras.h only changes
        the cases, some systems have issues with applying this patch.

        To work around the problem, the change is made is two patches, first rename to
        WTFObjCRuntimeExtras.h, then back to ObjCRuntimeExtras.h.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/WTFObjCRuntimeExtras.h: Renamed from Source/WTF/wtf/ObjcRuntimeExtras.h.
        (wtfObjCMsgSend):

2018-11-09  Keith Miller  <keith_miller@apple.com>

        LLInt VectorSizeOffset should be based on offset extraction
        https://bugs.webkit.org/show_bug.cgi?id=191468

        Reviewed by Yusuke Suzuki.

        Make things friends with LLIntOffsetsExtractor.

        * wtf/RefCountedArray.h:
        * wtf/Vector.h:

2018-11-09  Jim Mason  <jmason@ibinx.com>

        [WTF] Changes in bug 188867 break non-Linux Unix builds
        https://bugs.webkit.org/show_bug.cgi?id=191380

        The intention of 188867 was to split out platform-specific
        heap query/release code.  Any unsupported platform
        would use a generic, no-op stub.  However, wtf/PlatformGTK.cmake
        ended up sending all non-Linux platforms through the Linux
        implementation, which breaks the build for those platforms.
        This includes any user of the GTK target which is not Linux,
        such as the *BSDs, Solaris, etc.

        Reviewed by Yusuke Suzuki.

        * wtf/PlatformGTK.cmake: Updated to include Linux-specific
        code only for Linux; all other platforms use the generic stub.

2018-11-06  Geoffrey Garen  <ggaren@apple.com>

        Removed mbmalloc target from WTF
        https://bugs.webkit.org/show_bug.cgi?id=191313

        Reviewed by Saam Barati.

        For benchmarking, WTF::fastMalloc is no longer meaningfully different
        from bmalloc. (And bmalloc has its own mbmalloc target.)

        * Configurations/mbmalloc.xcconfig: Removed.
        * WTF.xcodeproj/project.pbxproj:
        * wtf/mbmalloc.cpp: Removed.

2018-11-08  Alexey Proskuryakov  <ap@apple.com>

        Re-add PLATFORM(IOS), now with the strict meaning
        https://bugs.webkit.org/show_bug.cgi?id=191281

        Reviewed by Tim Horton.

        * wtf/Platform.h: No change in behavior. Some of the macros look a bit weird
        when expanded, it might be that the values are incorrect for some flavors of iOS family.

2018-11-08  Dean Jackson  <dino@apple.com>

        Add a String literal that returns a String
        https://bugs.webkit.org/show_bug.cgi?id=191425
        <rdar://problem/45914556>

        Reviewed by Sam Weinig.

        Add a new String literal, _str, that will return a String type.
        This is useful when ""_s won't work, such as for things that
        don't take an ASCIILiteral directly e.g. ExceptionOr<String>
        or Variants.

        * wtf/text/WTFString.h:
        (WTF::StringLiterals::operator _str): Added.

2018-11-06  Justin Fan  <justin_fan@apple.com>

        [WebGPU] Experimental prototype for WebGPURenderPipeline and WebGPUSwapChain
        https://bugs.webkit.org/show_bug.cgi?id=191291

        Reviewed by Myles Maxfield.

        Properly disable WEBGPU on all non-Metal platforms for now.

        * wtf/Platform.h:

2018-11-05  Myles C. Maxfield  <mmaxfield@apple.com>

        Cache glyph paths and share underline skipping code between all the ports
        https://bugs.webkit.org/show_bug.cgi?id=191239

        Reviewed by Alex Christensen.

        Remove CSS3_TEXT_DECORATION_SKIP_INK. It's now interoperable and part of the Web Platform.

        * wtf/Platform.h:

2018-11-05  Dominik Infuehr  <dinfuehr@igalia.com>

        Enable LLInt on ARMv7/Linux
        https://bugs.webkit.org/show_bug.cgi?id=191190

        Reviewed by Yusuke Suzuki.

        After enabling the new bytecode format in r237547, C_LOOP was
        forced on all 32-bit platforms. Now enable LLInt again on
        ARMv7-Thumb2/Linux by default.

        * wtf/Platform.h:

2018-11-04  Fujii Hironori  <Hironori.Fujii@sony.com>

        [Win] Use C++14, not C++17
        https://bugs.webkit.org/show_bug.cgi?id=191101

        Reviewed by Alex Christensen.

        * wtf/StdLibExtras.h: Use _MSVC_LANG to check C++ language version
        instead of _MSC_FULL_VER.

2018-11-02  Justin Fan  <justin_fan@apple.com>

        [WebGPU] Experimental prototype for MSL shaders
        https://bugs.webkit.org/show_bug.cgi?id=191084

        Reviewed by Dean Jackson.

        Disabling WebGPU on non-Cocoa platforms and iOS Simulator.

        * wtf/Platform.h:

2018-11-01  Jiewen Tan  <jiewen_tan@apple.com>

        Replace CommonRandom SPI with API
        https://bugs.webkit.org/show_bug.cgi?id=191178
        <rdar://problem/45722391>

        Reviewed by Brent Fulgham.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/RandomDevice.cpp:
        (WTF::RandomDevice::cryptographicallyRandomValues):
        * wtf/spi/darwin/CommonCryptoSPI.h: Removed.

2018-11-01  Fujii Hironori  <Hironori.Fujii@sony.com>

        Rename <wtf/unicode/UTF8.h> to <wtf/unicode/UTF8Conversion.h> in order to avoid conflicting with ICU's unicode/utf8.h
        https://bugs.webkit.org/show_bug.cgi?id=189693

        Reviewed by Yusuke Suzuki.

        * WTF.xcodeproj/project.pbxproj: Replaced unicode/UTF8.{cpp,h} with unicode/UTF8Conversion.{cpp,h}.
        * wtf/CMakeLists.txt: Ditto.
        * wtf/text/AtomicStringImpl.cpp: Replaced <wtf/unicode/UTF8.h> with <wtf/unicode/UTF8Conversion.h>.
        * wtf/text/StringImpl.cpp: Ditto.
        * wtf/text/StringView.cpp: Ditto.
        * wtf/text/WTFString.cpp: Ditto.
        * wtf/unicode/UTF8Conversion.cpp: Renamed from Source/WTF/wtf/unicode/UTF8.cpp.
        * wtf/unicode/UTF8Conversion.h: Renamed from Source/WTF/wtf/unicode/UTF8.h.

2018-10-30  Don Olmstead  <don.olmstead@sony.com>

        [PlayStation] Enable JavaScriptCore
        https://bugs.webkit.org/show_bug.cgi?id=191072

        Reviewed by Brent Fulgham.

        Add platform files for the PlayStation port.

        * wtf/PlatformPlayStation.cmake: Added.

2018-10-30  David Kilzer  <ddkilzer@apple.com>

        XSLTProcessor should limit max transform depth
        <https://webkit.org/b/191075>
        <rdar://problem/45531453>

        Reviewed by Alex Christensen.

        * wtf/cocoa/SoftLinking.h:
        (SOFT_LINK_VARIABLE_FOR_HEADER):
        (SOFT_LINK_VARIABLE_FOR_SOURCE):
        - Add macros for non-constant global variables.

2018-10-30  Alexey Proskuryakov  <ap@apple.com>

        Clean up some obsolete MAX_ALLOWED macros
        https://bugs.webkit.org/show_bug.cgi?id=190916

        Reviewed by Tim Horton.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/PlatformMac.cmake:
        * wtf/spi/cocoa/NSMapTableSPI.h: Removed. This was only needed for old SDKs.

2018-10-29  Mark Lam  <mark.lam@apple.com>

        Correctly detect string overflow when using the 'Function' constructor.
        https://bugs.webkit.org/show_bug.cgi?id=184883
        <rdar://problem/36320331>

        Reviewed by Saam Barati.

        1. Enhanced StringBuilder so that it supports 2 modes of behavior:
           a. StringBuilder::OverflowHandler::CrashOnOverflow.
           b. StringBuilder::OverflowHandler::RecordOverflow.

           CrashOnOverflow will crash the moment an overflow or failure to allocate
           memory is detected.

           RecordOverflow will make StringBuilder::hasOverflowed() return true when an
           overflow or failure to allocate memory is detected.  However, if the user
           invokes toString(), toStringPreserveCapacity(), toAtomicString(), length(),
           capacity(), isEmpty(), characters8(), or characters16(), then the StringBuilder
           will crash regardless because these methods can only meaningfully do their
           work and return a result if and only if the builder has not overflowed.

           By default, the StringBuilder crashes on overflow (the old behavior) unless it
           is explicitly constructed with the StringBuilder::OverflowHandler::RecordOverflow
           enum.

           Design note:

           The StringBuilder can only be put in 1 of the 2 modes at the time of
           construction.  This means that we could have implemented it as a template
           that is parameterized on an OverflowHandler class (like CheckedArithmetic)
           instead of using a runtime check in the ConditionalCrashOnOverflow handler.

           However, I was not able to get clang to export the explicitly instantiated
           instances (despite the methods having being decorated with WTF_EXPORT_PRIVATE).
           Since the StringBuilder is a transient object (not stored for a long time on
           the heap), and the runtime check of the boolean is not that costly compared
           to other work that StringBuilder routinely does (e.g. memcpy), using the
           new ConditionalCrashOnOverflow (which does a runtime check to determine to
           crash or not on overflow) is fine.

           When clang is able to export explicitly instantiated template methods, we can
           templatize StringBuilder and do away with ConditionalCrashOnOverflow.
           See https://bugs.webkit.org/show_bug.cgi?id=191050.

        To support the above, we also did:

        2. Enhanced all StringBuilder append and buffer allocation methods to be able to
           fail without crashing.  This also meant that ...

        3. Added tryReallocate() support to StringImpl.  tryRealloc() was added to
           FastMalloc, and bmalloc (and related peers) to enable this.

        4. Added ConditionalCrashOnOverflow, which can choose at runtime whether to behave
           like CrashOnOverflow or RecordOverflow.

        * wtf/CheckedArithmetic.h:
        (WTF::ConditionalCrashOnOverflow::overflowed):
        (WTF::ConditionalCrashOnOverflow::shouldCrashOnOverflow const):
        (WTF::ConditionalCrashOnOverflow::setShouldCrashOnOverflow):
        (WTF::ConditionalCrashOnOverflow::hasOverflowed const):
        (WTF::ConditionalCrashOnOverflow::clearOverflow):
        (WTF::ConditionalCrashOnOverflow::crash):
        (WTF::RecordOverflow::overflowed):
        (WTF::Checked::unsafeGet const):
        * wtf/FastMalloc.cpp:
        (WTF::tryFastRealloc):
        * wtf/FastMalloc.h:
        * wtf/text/StringBuilder.cpp:
        (WTF::expandedCapacity):
        (WTF::StringBuilder::reifyString const):
        (WTF::StringBuilder::resize):
        (WTF::StringBuilder::allocateBuffer):
        (WTF::StringBuilder::allocateBufferUpConvert):
        (WTF::StringBuilder::reallocateBuffer<LChar>):
        (WTF::StringBuilder::reallocateBuffer<UChar>):
        (WTF::StringBuilder::reserveCapacity):
        (WTF::StringBuilder::appendUninitialized):
        (WTF::StringBuilder::appendUninitializedSlow):
        (WTF::StringBuilder::append):
        (WTF::StringBuilder::canShrink const):
        (WTF::StringBuilder::shrinkToFit):
        * wtf/text/StringBuilder.h:
        (WTF::StringBuilder::StringBuilder):
        (WTF::StringBuilder::didOverflow):
        (WTF::StringBuilder::hasOverflowed const):
        (WTF::StringBuilder::crashesOnOverflow const):
        (WTF::StringBuilder::append):
        (WTF::StringBuilder::toString):
        (WTF::StringBuilder::toStringPreserveCapacity const):
        (WTF::StringBuilder::toAtomicString const):
        (WTF::StringBuilder::length const):
        (WTF::StringBuilder::capacity const):
        (WTF::StringBuilder::operator[] const):
        (WTF::StringBuilder::swap):
        (WTF::StringBuilder::getBufferCharacters<UChar>):
        * wtf/text/StringBuilderJSON.cpp:
        (WTF::StringBuilder::appendQuotedJSONString):
        * wtf/text/StringImpl.cpp:
        (WTF::StringImpl::reallocateInternal):
        (WTF::StringImpl::reallocate):
        (WTF::StringImpl::tryReallocate):
        * wtf/text/StringImpl.h:

2018-10-29  Tim Horton  <timothy_horton@apple.com>

        Modernize WebKit nibs and lprojs for localization's sake
        https://bugs.webkit.org/show_bug.cgi?id=190911
        <rdar://problem/45349466>

        Reviewed by Dan Bernstein.

        * WTF.xcodeproj/project.pbxproj:
        English->en

2018-10-29  Tadeu Zagallo  <tzagallo@apple.com>

        New bytecode format for JSC
        https://bugs.webkit.org/show_bug.cgi?id=187373
        <rdar://problem/44186758>

        Reviewed by Filip Pizlo.

        * wtf/Forward.h: Fix WTF_LAZY_FOR_EACH_TERM on MSVC and add WTF_LAZY_HAS_REST to check whether
        a macro was passed multiple arguments
        * wtf/Platform.h: Force ENABLE_JIT=false on all 32-bit platforms
        * wtf/Vector.h:
        (WTF::minCapacity>::insertVector): Allow vectors with different overflow handlers to be passed to insertVector

2018-10-28  Geoffrey Garen  <ggaren@apple.com>

        HashMap should support selecting a random entry
        https://bugs.webkit.org/show_bug.cgi?id=190814

        Reviewed by Ryosuke Niwa.

        * wtf/HashTable.h:
        (WTF::HashTable::random):
        (WTF::HashTable::random const): Merge the empty and deleted checks, and
        use more idiomatic addressing.

2018-10-26  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r237479 and r237484.
        https://bugs.webkit.org/show_bug.cgi?id=190978

        broke JSC on iOS (Requested by tadeuzagallo on #webkit).

        Reverted changesets:

        "New bytecode format for JSC"
        https://bugs.webkit.org/show_bug.cgi?id=187373
        https://trac.webkit.org/changeset/237479

        "Gardening: Build fix after r237479."
        https://bugs.webkit.org/show_bug.cgi?id=187373
        https://trac.webkit.org/changeset/237484

2018-10-26  Tadeu Zagallo  <tzagallo@apple.com>

        New bytecode format for JSC
        https://bugs.webkit.org/show_bug.cgi?id=187373
        <rdar://problem/44186758>

        Reviewed by Filip Pizlo.

        * wtf/Forward.h: Fix WTF_LAZY_FOR_EACH_TERM on MSVC and add WTF_LAZY_HAS_REST to check whether
        a macro was passed multiple arguments
        * wtf/Platform.h: Force ENABLE_JIT=false on all 32-bit platforms
        * wtf/Vector.h:
        (WTF::minCapacity>::insertVector): Allow vectors with different overflow handlers to be passed to insertVector

2018-10-26  Geoffrey Garen  <ggaren@apple.com>

        HashMap should support selecting a random entry
        https://bugs.webkit.org/show_bug.cgi?id=190814

        Reviewed by Antti Koivisto.

        * wtf/HashTable.h:
        (WTF::HashTable::random):
        (WTF::HashTable::random const): Draw a new random bucket any time we
        have a miss, to avoid bias caused by lopsided tables.

2018-10-26  Antti Koivisto  <antti@apple.com>

        hashSet.remove(hashSet.random()) doesn't build
        https://bugs.webkit.org/show_bug.cgi?id=190953

        Reviewed by Chris Dumez.

        * wtf/HashSet.h:

        Remove non-const random(). HashSet only returns const iterators (it is immutable via iterator).

        * wtf/HashTable.h:
        (WTF::HashTable::random const):

        Invoke const_iterator() by using static_cast<> instead of trying to do it directly.

2018-10-26  Alicia Boya García  <aboya@igalia.com>

        [MSE][WTF][Media] Invalid MediaTime should be falsy
        https://bugs.webkit.org/show_bug.cgi?id=190893

        Reviewed by Jer Noble.

        This patch modifies the definition of MediaTime so that invalid times
        are evaluated to false in the context of a boolean expression.

        * wtf/MediaTime.cpp:
        (WTF::MediaTime::operator! const):
        (WTF::MediaTime::operator bool const):

2018-10-26  Keith Miller  <keith_miller@apple.com>

        Some internal projects include wtf headers and build with C++11
        https://bugs.webkit.org/show_bug.cgi?id=190791

        Reviewed by Alexey Proskuryakov.

        C++11 doesn't support constexpr functions that contain
        statements. This patch removes getLSBSet set from builds before
        C++14 to avoid this for now.

        * wtf/MathExtras.h:
        (getLSBSet):

2018-10-25  Ross Kirsling  <ross.kirsling@sony.com>

        Cleanup: inline constexpr is redundant as constexpr implies inline
        https://bugs.webkit.org/show_bug.cgi?id=190819

        Reviewed by Mark Lam.

        * wtf/Bitmap.h:
        (WTF::WordType>::Bitmap):
        * wtf/LEBDecoder.h:
        (WTF::LEBDecoder::maxByteLength):
        * wtf/MathExtras.h:
        (defaultMinimumForClamp):
        (defaultMaximumForClamp):
        (clampToAccepting64):
        (isLessThan):
        (isLessThanEqual):
        (isGreaterThan):
        (isGreaterThanEqual):
        (WTF::roundUpToPowerOfTwo):
        (WTF::maskForSize):
        * wtf/Optional.h:
        * wtf/PtrTag.h:
        (WTF::tagCodePtr):
        (WTF::untagCodePtr):
        (WTF::retagCodePtr):
        (WTF::removeCodePtrTag):
        * wtf/StdLibExtras.h:
        (WTF::roundUpToMultipleOf):
        * wtf/Variant.h:
        (WTF::operator==):
        (WTF::operator!=):
        (WTF::operator>=):
        (WTF::operator<=):
        (WTF::operator>):
        (WTF::operator<):
        * wtf/text/StringImpl.h:
        (WTF::StringImplShape::StringImplShape):
        (WTF::StringImpl::StaticStringImpl::StaticStringImpl):

2018-10-25  Geoffrey Garen  <ggaren@apple.com>

        HashMap should support selecting a random entry
        https://bugs.webkit.org/show_bug.cgi?id=190814

        Reviewed by Antti Koivisto.

        In some cases, remove(begin()) is not quite good enough as a random
        eviction strategy. (See https://bugs.webkit.org/show_bug.cgi?id=190792.)
        So, let's support real random eviction.

        (And by "real" I mean "pseudo".)

        * wtf/HashCountedSet.h:
        * wtf/HashMap.h:
        * wtf/HashSet.h:
        * wtf/ListHashSet.h:
        (WTF::ListHashSet::random):
        (WTF::ListHashSet::random const):
        * wtf/LoggingHashMap.h:
        * wtf/LoggingHashSet.h: Plumb through the random() iterator.

        * wtf/HashTable.h:
        (WTF::HashTable::random):
        (WTF::HashTable::random const): Implement the random() iterator.
        makeIterator() already supports starting from any bucket, so this is
        pretty easy.

        In the subtle case where we select end(), we choose to wrap around and
        return begin(). We expect that clients don't really think of the end()
        bucket as being in the domain of the random search. Also, we don't want
        to annoy clients who know their tables are non-empty with needless
        checks for end().

        * wtf/RandomNumber.cpp:
        (WTF::weakRandomUint32):
        * wtf/RandomNumber.h: Added a free function for weak random numbers so
        that clients that want cheap random numbers aren't required to allocate
        storage for a WeakRandom generator.

2018-10-24  Megan Gardner  <megan_gardner@apple.com>

        Turn on Conic Gradients
        https://bugs.webkit.org/show_bug.cgi?id=190810

        Reviewed by Tim Horton.

        * wtf/FeatureDefines.h:

2018-10-24  Christopher Reid  <chris.reid@sony.com>

        [Win] Add function call name information to stack traces
        https://bugs.webkit.org/show_bug.cgi?id=190761

        Reviewed by Fujii Hironori.

        Add symbol information to stack traces using dbghelp.dll
        This library will use symbols files from these sources:
            - The current working directory
            - The directory containing the application's executable
            - _NT_SYMBOL_PATH environment variable
            - _NT_ALTERNATE_SYMBOL_PATH environment variable

        This functionality is currently only enabled in debug mode since dbghelp is not threadsafe.
        The DbgHelper class attempts to synchronize calls to dbghelp.dll but external code
        can still attempt to call the library at the same time as WebKit.

        * wtf/CMakeLists.txt:
        * wtf/PlatformWin.cmake:
        * wtf/StackTrace.cpp:
        * wtf/win/DbgHelperWin.cpp: Added.
        * wtf/win/DbgHelperWin.h: Added.

2018-10-22  Alexey Proskuryakov  <ap@apple.com>

        Really prevent PLATFORM(IOS) from being used
        https://bugs.webkit.org/show_bug.cgi?id=190813

        Reviewed by Tim Horton.

        * wtf/Platform.h: This relies on -Wundef, which we have enabled.

2018-10-22  Chris Dumez  <cdumez@apple.com>

        Deque's contains() and findIf() should be const
        https://bugs.webkit.org/show_bug.cgi?id=190796

        Reviewed by Antti Koivisto.

        Deque's contains() and findIf() should be const as they do not modify the container.

        * wtf/Deque.h:
        (WTF::inlineCapacity>::findIf):
        (WTF::inlineCapacity>::findIf const):
        (WTF::inlineCapacity>::contains const):
        (WTF::inlineCapacity>::contains): Deleted.

2018-10-18  Alicia Boya García  <aboya@igalia.com>

        [Media] Use nanoseconds as MaximumTimeScale
        https://bugs.webkit.org/show_bug.cgi?id=190631

        1e9 is a much more useful timescale than the previous one 2^31-1.
        Unlike 2^31-1, which is a prime number, nanosecond scale is pretty
        common among some formats like WebM and frameworks like GStreamer
        where base 10 timescale is common... and it's those big timescales the
        ones that are usually scaled up to MaximumTimeScale.

        Reviewed by Jer Noble.

        * wtf/MediaTime.cpp:

2018-10-18  Alexey Proskuryakov  <ap@apple.com>

        Remove PLATFORM(IOS) for now
        https://bugs.webkit.org/show_bug.cgi?id=190737

        Reviewed by Tim Horton.

        * wtf/Platform.h:

2018-10-18  Alexey Proskuryakov  <ap@apple.com>

        Switch from PLATFORM(IOS) to PLATFORM(IOS_FAMILY)
        https://bugs.webkit.org/show_bug.cgi?id=190729

        Reviewed by Tim Horton.

        * wtf/Assertions.h:
        * wtf/FeatureDefines.h:
        * wtf/InlineASM.h:
        * wtf/MemoryPressureHandler.cpp:
        (WTF::thresholdForPolicy):
        * wtf/Platform.h:
        * wtf/cocoa/MemoryPressureHandlerCocoa.mm:
        (WTF::MemoryPressureHandler::install):
        (WTF::MemoryPressureHandler::respondToMemoryPressure):
        * wtf/spi/cocoa/NSMapTableSPI.h:
        * wtf/spi/darwin/XPCSPI.h:
        * wtf/text/StringCommon.h:
        * wtf/text/TextBreakIterator.cpp:
        * wtf/text/TextBreakIterator.h:
        * wtf/unicode/icu/CollatorICU.cpp:
        (WTF::copyDefaultLocale):

2018-10-18  Alex Christensen  <achristensen@webkit.org>

        Clean up FrameLoader two-state enums
        https://bugs.webkit.org/show_bug.cgi?id=190731

        Reviewed by Chris Dumez.

        * wtf/EnumTraits.h:
        (WTF::isValidEnum):

2018-10-17  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r237208.
        https://bugs.webkit.org/show_bug.cgi?id=190691

        Caused the API test that was changed to failure continuously
        (Requested by Truitt on #webkit).

        Reverted changeset:

        "[Media] Use nanoseconds as MaximumTimeScale"
        https://bugs.webkit.org/show_bug.cgi?id=190631
        https://trac.webkit.org/changeset/237208

2018-10-16  Alicia Boya García  <aboya@igalia.com>

        [Media] Use nanoseconds as MaximumTimeScale
        https://bugs.webkit.org/show_bug.cgi?id=190631

        1e9 is a much more useful timescale than the previous one 2^31-1.
        Unlike 2^31-1, which is a prime number, nanosecond scale is pretty
        common among some formats like WebM and frameworks like GStreamer
        where base 10 timescale is common... and it's those big timescales the
        ones that are usually scaled up to MaximumTimeScale.

        Reviewed by Jer Noble.

        * wtf/MediaTime.cpp:

2018-10-15  Keith Miller  <keith_miller@apple.com>

        Support arm64 CPUs with a 32-bit address space
        https://bugs.webkit.org/show_bug.cgi?id=190273

        Reviewed by Michael Saboff.

        Use WTF_CPU_ADDRESS64/32 to decide if the system is running on arm64_32.

        * wtf/MathExtras.h:
        (getLSBSet):
        * wtf/Platform.h:

2018-10-15  Timothy Hatcher  <timothy@apple.com>

        Add support for prefers-color-scheme media query
        https://bugs.webkit.org/show_bug.cgi?id=190499
        rdar://problem/45212025

        Reviewed by Dean Jackson.

        * wtf/FeatureDefines.h: Added ENABLE_DARK_MODE_CSS.

2018-10-15  Saam barati  <sbarati@apple.com>

        Emit fjcvtzs on ARM64E on Darwin
        https://bugs.webkit.org/show_bug.cgi?id=184023

        Reviewed by Yusuke Suzuki and Filip Pizlo.

        * wtf/Platform.h:

2018-10-15  Alex Christensen  <achristensen@webkit.org>

        Use pragma once in WTF
        https://bugs.webkit.org/show_bug.cgi?id=190527

        Reviewed by Chris Dumez.

        We also need to consistently include wtf headers from within wtf so we can build wtf without
        symbol redefinition errors from including the copy in Source and the copy in the build directory.

        * wtf/ASCIICType.h:
        * wtf/Assertions.cpp:
        * wtf/Assertions.h:
        * wtf/Atomics.h:
        * wtf/AutomaticThread.cpp:
        * wtf/AutomaticThread.h:
        * wtf/BackwardsGraph.h:
        * wtf/Bag.h:
        * wtf/BagToHashMap.h:
        * wtf/BitVector.cpp:
        * wtf/BitVector.h:
        * wtf/Bitmap.h:
        * wtf/BloomFilter.h:
        * wtf/Box.h:
        * wtf/BubbleSort.h:
        * wtf/BumpPointerAllocator.h:
        * wtf/ByteOrder.h:
        * wtf/CPUTime.cpp:
        * wtf/CallbackAggregator.h:
        * wtf/CheckedArithmetic.h:
        * wtf/CheckedBoolean.h:
        * wtf/ClockType.cpp:
        * wtf/ClockType.h:
        * wtf/CommaPrinter.h:
        * wtf/CompilationThread.cpp:
        * wtf/CompilationThread.h:
        * wtf/Compiler.h:
        * wtf/ConcurrentPtrHashSet.cpp:
        * wtf/ConcurrentVector.h:
        * wtf/Condition.h:
        * wtf/CountingLock.cpp:
        * wtf/CrossThreadTaskHandler.cpp:
        * wtf/CryptographicUtilities.cpp:
        * wtf/CryptographicUtilities.h:
        * wtf/CryptographicallyRandomNumber.cpp:
        * wtf/CryptographicallyRandomNumber.h:
        * wtf/CurrentTime.cpp:
        * wtf/DataLog.cpp:
        * wtf/DataLog.h:
        * wtf/DateMath.cpp:
        * wtf/DateMath.h:
        * wtf/DecimalNumber.cpp:
        * wtf/DecimalNumber.h:
        * wtf/Deque.h:
        * wtf/DisallowCType.h:
        * wtf/Dominators.h:
        * wtf/DoublyLinkedList.h:
        * wtf/FastBitVector.cpp:
        * wtf/FastMalloc.cpp:
        * wtf/FastMalloc.h:
        * wtf/FeatureDefines.h:
        * wtf/FilePrintStream.cpp:
        * wtf/FilePrintStream.h:
        * wtf/FlipBytes.h:
        * wtf/FunctionDispatcher.cpp:
        * wtf/FunctionDispatcher.h:
        * wtf/GetPtr.h:
        * wtf/Gigacage.cpp:
        * wtf/GlobalVersion.cpp:
        * wtf/GraphNodeWorklist.h:
        * wtf/GregorianDateTime.cpp:
        * wtf/GregorianDateTime.h:
        * wtf/HashFunctions.h:
        * wtf/HashMap.h:
        * wtf/HashMethod.h:
        * wtf/HashSet.h:
        * wtf/HashTable.cpp:
        * wtf/HashTraits.h:
        * wtf/Indenter.h:
        * wtf/IndexSparseSet.h:
        * wtf/InlineASM.h:
        * wtf/Insertion.h:
        * wtf/IteratorAdaptors.h:
        * wtf/IteratorRange.h:
        * wtf/JSONValues.cpp:
        * wtf/JSValueMalloc.cpp:
        * wtf/LEBDecoder.h:
        * wtf/Language.cpp:
        * wtf/ListDump.h:
        * wtf/Lock.cpp:
        * wtf/Lock.h:
        * wtf/LockAlgorithm.h:
        * wtf/LockedPrintStream.cpp:
        * wtf/Locker.h:
        * wtf/MD5.cpp:
        * wtf/MD5.h:
        * wtf/MainThread.cpp:
        * wtf/MainThread.h:
        * wtf/MallocPtr.h:
        * wtf/MathExtras.h:
        * wtf/MediaTime.cpp:
        * wtf/MediaTime.h:
        * wtf/MemoryPressureHandler.cpp:
        * wtf/MessageQueue.h:
        * wtf/MetaAllocator.cpp:
        * wtf/MetaAllocator.h:
        * wtf/MetaAllocatorHandle.h:
        * wtf/MonotonicTime.cpp:
        * wtf/MonotonicTime.h:
        * wtf/NakedPtr.h:
        * wtf/NoLock.h:
        * wtf/NoTailCalls.h:
        * wtf/Noncopyable.h:
        * wtf/NumberOfCores.cpp:
        * wtf/NumberOfCores.h:
        * wtf/OSAllocator.h:
        * wtf/OSAllocatorPosix.cpp:
        * wtf/OSRandomSource.cpp:
        * wtf/OSRandomSource.h:
        * wtf/ObjcRuntimeExtras.h:
        * wtf/OrderMaker.h:
        * wtf/PackedIntVector.h:
        * wtf/PageAllocation.h:
        * wtf/PageBlock.cpp:
        * wtf/PageBlock.h:
        * wtf/PageReservation.h:
        * wtf/ParallelHelperPool.cpp:
        * wtf/ParallelHelperPool.h:
        * wtf/ParallelJobs.h:
        * wtf/ParallelJobsLibdispatch.h:
        * wtf/ParallelVectorIterator.h:
        * wtf/ParkingLot.cpp:
        * wtf/ParkingLot.h:
        * wtf/Platform.h:
        * wtf/PointerComparison.h:
        * wtf/Poisoned.cpp:
        * wtf/PrintStream.cpp:
        * wtf/PrintStream.h:
        * wtf/ProcessID.h:
        * wtf/ProcessPrivilege.cpp:
        * wtf/RAMSize.cpp:
        * wtf/RAMSize.h:
        * wtf/RandomDevice.cpp:
        * wtf/RandomNumber.cpp:
        * wtf/RandomNumber.h:
        * wtf/RandomNumberSeed.h:
        * wtf/RangeSet.h:
        * wtf/RawPointer.h:
        * wtf/ReadWriteLock.cpp:
        * wtf/RedBlackTree.h:
        * wtf/Ref.h:
        * wtf/RefCountedArray.h:
        * wtf/RefCountedLeakCounter.cpp:
        * wtf/RefCountedLeakCounter.h:
        * wtf/RefCounter.h:
        * wtf/RefPtr.h:
        * wtf/RetainPtr.h:
        * wtf/RunLoop.cpp:
        * wtf/RunLoop.h:
        * wtf/RunLoopTimer.h:
        * wtf/RunLoopTimerCF.cpp:
        * wtf/SHA1.cpp:
        * wtf/SHA1.h:
        * wtf/SaturatedArithmetic.h:
        (saturatedSubtraction):
        * wtf/SchedulePair.h:
        * wtf/SchedulePairCF.cpp:
        * wtf/SchedulePairMac.mm:
        * wtf/ScopedLambda.h:
        * wtf/Seconds.cpp:
        * wtf/Seconds.h:
        * wtf/SegmentedVector.h:
        * wtf/SentinelLinkedList.h:
        * wtf/SharedTask.h:
        * wtf/SimpleStats.h:
        * wtf/SingleRootGraph.h:
        * wtf/SinglyLinkedList.h:
        * wtf/SixCharacterHash.cpp:
        * wtf/SixCharacterHash.h:
        * wtf/SmallPtrSet.h:
        * wtf/Spectrum.h:
        * wtf/StackBounds.cpp:
        * wtf/StackBounds.h:
        * wtf/StackStats.cpp:
        * wtf/StackStats.h:
        * wtf/StackTrace.cpp:
        * wtf/StdLibExtras.h:
        * wtf/StreamBuffer.h:
        * wtf/StringHashDumpContext.h:
        * wtf/StringPrintStream.cpp:
        * wtf/StringPrintStream.h:
        * wtf/ThreadGroup.cpp:
        * wtf/ThreadMessage.cpp:
        * wtf/ThreadSpecific.h:
        * wtf/Threading.cpp:
        * wtf/Threading.h:
        * wtf/ThreadingPrimitives.h:
        * wtf/ThreadingPthreads.cpp:
        * wtf/TimeWithDynamicClockType.cpp:
        * wtf/TimeWithDynamicClockType.h:
        * wtf/TimingScope.cpp:
        * wtf/TinyLRUCache.h:
        * wtf/TinyPtrSet.h:
        * wtf/TriState.h:
        * wtf/TypeCasts.h:
        * wtf/UUID.cpp:
        * wtf/UnionFind.h:
        * wtf/VMTags.h:
        * wtf/ValueCheck.h:
        * wtf/Vector.h:
        * wtf/VectorTraits.h:
        * wtf/WallTime.cpp:
        * wtf/WallTime.h:
        * wtf/WeakPtr.h:
        * wtf/WeakRandom.h:
        * wtf/WordLock.cpp:
        * wtf/WordLock.h:
        * wtf/WorkQueue.cpp:
        * wtf/WorkQueue.h:
        * wtf/WorkerPool.cpp:
        * wtf/cf/LanguageCF.cpp:
        * wtf/cf/RunLoopCF.cpp:
        * wtf/cocoa/Entitlements.mm:
        * wtf/cocoa/MachSendRight.cpp:
        * wtf/cocoa/MainThreadCocoa.mm:
        * wtf/cocoa/MemoryFootprintCocoa.cpp:
        * wtf/cocoa/WorkQueueCocoa.cpp:
        * wtf/dtoa.cpp:
        * wtf/dtoa.h:
        * wtf/ios/WebCoreThread.cpp:
        * wtf/ios/WebCoreThread.h:
        * wtf/mac/AppKitCompatibilityDeclarations.h:
        * wtf/mac/DeprecatedSymbolsUsedBySafari.mm:
        * wtf/mbmalloc.cpp:
        * wtf/persistence/PersistentCoders.cpp:
        * wtf/persistence/PersistentDecoder.cpp:
        * wtf/persistence/PersistentEncoder.cpp:
        * wtf/spi/cf/CFBundleSPI.h:
        * wtf/spi/darwin/CommonCryptoSPI.h:
        * wtf/text/ASCIIFastPath.h:
        * wtf/text/ASCIILiteral.cpp:
        * wtf/text/AtomicString.cpp:
        * wtf/text/AtomicString.h:
        * wtf/text/AtomicStringHash.h:
        * wtf/text/AtomicStringImpl.cpp:
        * wtf/text/AtomicStringImpl.h:
        * wtf/text/AtomicStringTable.cpp:
        * wtf/text/AtomicStringTable.h:
        * wtf/text/Base64.cpp:
        * wtf/text/CString.cpp:
        * wtf/text/CString.h:
        * wtf/text/ConversionMode.h:
        * wtf/text/ExternalStringImpl.cpp:
        * wtf/text/IntegerToStringConversion.h:
        * wtf/text/LChar.h:
        * wtf/text/LineEnding.cpp:
        * wtf/text/StringBuffer.h:
        * wtf/text/StringBuilder.cpp:
        * wtf/text/StringBuilder.h:
        * wtf/text/StringBuilderJSON.cpp:
        * wtf/text/StringCommon.h:
        * wtf/text/StringConcatenate.h:
        * wtf/text/StringHash.h:
        * wtf/text/StringImpl.cpp:
        * wtf/text/StringImpl.h:
        * wtf/text/StringOperators.h:
        * wtf/text/StringView.cpp:
        * wtf/text/StringView.h:
        * wtf/text/SymbolImpl.cpp:
        * wtf/text/SymbolRegistry.cpp:
        * wtf/text/SymbolRegistry.h:
        * wtf/text/TextBreakIterator.cpp:
        * wtf/text/TextBreakIterator.h:
        * wtf/text/TextBreakIteratorInternalICU.h:
        * wtf/text/TextPosition.h:
        * wtf/text/TextStream.cpp:
        * wtf/text/UniquedStringImpl.h:
        * wtf/text/WTFString.cpp:
        * wtf/text/WTFString.h:
        * wtf/text/cocoa/StringCocoa.mm:
        * wtf/text/cocoa/StringViewCocoa.mm:
        * wtf/text/cocoa/TextBreakIteratorInternalICUCocoa.cpp:
        * wtf/text/icu/UTextProvider.cpp:
        * wtf/text/icu/UTextProvider.h:
        * wtf/text/icu/UTextProviderLatin1.cpp:
        * wtf/text/icu/UTextProviderLatin1.h:
        * wtf/text/icu/UTextProviderUTF16.cpp:
        * wtf/text/icu/UTextProviderUTF16.h:
        * wtf/threads/BinarySemaphore.cpp:
        * wtf/threads/BinarySemaphore.h:
        * wtf/threads/Signals.cpp:
        * wtf/unicode/CharacterNames.h:
        * wtf/unicode/Collator.h:
        * wtf/unicode/CollatorDefault.cpp:
        * wtf/unicode/UTF8.cpp:
        * wtf/unicode/UTF8.h:

2018-10-12  Alex Christensen  <achristensen@webkit.org>

        Allow encoding of small enum classes
        https://bugs.webkit.org/show_bug.cgi?id=190531

        Reviewed by Tim Horton.

        * wtf/Forward.h:

2018-10-11  Alexey Proskuryakov  <ap@apple.com>

        Add PLATFORM(IOS_FAMILY) and OS(IOS_FAMILY)
        https://bugs.webkit.org/show_bug.cgi?id=190477

        Reviewed by Tim Horton.

        Currently, PLATFORM(IOS) and OS(IOS) are true when building for any
        TARGET_OS_IPHONE target, which is quite confusing. Add a better named alternative,
        as a first step towards mass replacing PLATFORM(IOS). Can't so it all at once
        because of dependencies in other source repositories.

        * wtf/Platform.h: Changed to the new name in this file though. Kept a few
        instances that actually target iOS only, having a version check.

2018-10-11  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        Use currentStackPointer more
        https://bugs.webkit.org/show_bug.cgi?id=190503

        Reviewed by Saam Barati.

        Use WTF::currentStackPointer more in WebKit to adopt ASAN detect_stack_use_after_return option.

        * wtf/StackBounds.cpp:
        (WTF::testStackDirection2):
        (WTF::testStackDirection):
        * wtf/ThreadingPthreads.cpp:
        (WTF::Thread::signalHandlerSuspendResume):
        (WTF::getApproximateStackPointer): Deleted.

2018-10-11  Ross Kirsling  <ross.kirsling@sony.com>

        [WTF] Semaphore.h conflicts with POSIX header
        https://bugs.webkit.org/show_bug.cgi?id=190486

        Reviewed by Yusuke Suzuki.

        Rename Semaphore.h to WTFSemaphore.h to avoid conflict with POSIX semaphore.h on case-insensitive file systems.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/WTFSemaphore.h: Renamed from wtf/Semaphore.h.

2018-10-10  Mark Lam  <mark.lam@apple.com>

        Changes towards allowing use of the ASAN detect_stack_use_after_return option.
        https://bugs.webkit.org/show_bug.cgi?id=190405
        <rdar://problem/45131464>

        Reviewed by Michael Saboff.

        Introduce WTF::currentStackPointer() which computes its caller's stack pointer value.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/StackBounds.h:
        (WTF::StackBounds::checkConsistency const):
        * wtf/StackPointer.cpp: Added.
        (WTF::currentStackPointer):
        * wtf/StackPointer.h: Added.

2018-10-09  Mark Lam  <mark.lam@apple.com>

        StringTypeAdapter constructor is not properly enforcing String::MaxLength.
        https://bugs.webkit.org/show_bug.cgi?id=190392
        <rdar://problem/45116210>

        Reviewed by Saam Barati.

        Previously, the StringTypeAdapter constructor for a UChar* string was summing the
        unsigned length of the source string without an overflow check.  We now make that
        length a size_t which removes this issue, and assert that it's within
        String::MaxLength thereafter.

        Also made the StringTypeAdapter constructor for a LChar* string behave in an
        equivalent manner for consistency.  In both cases, we'll crash in a RELEASE_ASSERT
        if the source string length exceeds String::MaxLength.

        * wtf/text/StringConcatenate.h:

2018-10-09  Mark Lam  <mark.lam@apple.com>

        Revert temporary asserts for debugging a mysterious ASAN bot crash.
        https://bugs.webkit.org/show_bug.cgi?id=190396

        Reviewed by Yusuke Suzuki.

        * wtf/StackBounds.cpp:
        (WTF::StackBounds::newThreadStackBounds):
        * wtf/StackBounds.h:
        (WTF::StackBounds::checkConsistency const):

2018-10-08  Aditya Keerthi  <akeerthi@apple.com>

        Make <input type=color> a runtime enabled (on-by-default) feature
        https://bugs.webkit.org/show_bug.cgi?id=189162

        Reviewed by Wenson Hsieh and Tim Horton.

        * wtf/FeatureDefines.h:

2018-10-06  Mark Lam  <mark.lam@apple.com>

        Adding some temporary asserts with data logging to debug a mysterious ASAN bot crash.
        https://bugs.webkit.org/show_bug.cgi?id=190334
        <rdar://problem/45071303>

        Reviewed by Yusuke Suzuki.

        These assertions are needed because we can't reproduce the issue locally.
        We'll remove these asserts after the needed data has been collected from the bot.

        * wtf/StackBounds.cpp:
        (WTF::StackBounds::newThreadStackBounds):
        * wtf/StackBounds.h:
        (WTF::StackBounds::checkConsistency const):

2018-10-07  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        Name Heap threads
        https://bugs.webkit.org/show_bug.cgi?id=190337

        Reviewed by Mark Lam.

        Add a functionality naming threads of ParallelHelperPool.

        * wtf/ParallelHelperPool.cpp:
        (WTF::ParallelHelperPool::ParallelHelperPool):
        * wtf/ParallelHelperPool.h:

2018-10-06  Mark Lam  <mark.lam@apple.com>

        Adding some temporary asserts to debug a mysterious ASAN bot crash.
        https://bugs.webkit.org/show_bug.cgi?id=190331

        Reviewed by Filip Pizlo.

        These assertions are needed because we can't reproduce the issue locally.
        We'll remove these asserts after the needed data has been collected from the bot.

        * wtf/StackBounds.h:
        (WTF::StackBounds::checkConsistency const):

2018-10-05  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        [JSC][Linux] Support Perf JITDump logging
        https://bugs.webkit.org/show_bug.cgi?id=189893

        Reviewed by Mark Lam.

        * wtf/PageReservation.h:
        (WTF::PageReservation::reserveAndCommitWithGuardPages):

2018-10-03  Dan Bernstein  <mitz@apple.com>

        WTF part of [Xcode] Update some build settings as recommended by Xcode 10
        https://bugs.webkit.org/show_bug.cgi?id=190250

        Reviewed by Alex Christensen.

        * Configurations/Base.xcconfig: Enabled CLANG_WARN_COMMA, CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS,
          and CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF.

        * WTF.xcodeproj/project.pbxproj: Let Xcode update LastUpgradeCheck.

        * wtf/MathExtras.h:
        (WTF::fastLog2): Addressed newly-enabled CLANG_WARN_COMMA by splitting some comma-separated
          expressions into individual statements.

2018-10-03  Mark Lam  <mark.lam@apple.com>

        Make string MaxLength for all WTF and JS strings consistently equal to INT_MAX.
        https://bugs.webkit.org/show_bug.cgi?id=190187
        <rdar://problem/42512909>

        Reviewed by Michael Saboff.

        * wtf/text/StringConcatenate.h:
        (WTF::tryMakeStringFromAdapters):
        (WTF::sumWithOverflow): Deleted.
        * wtf/text/StringImpl.h:
        * wtf/text/WTFString.h:

2018-10-03  Michael Catanzaro  <mcatanzaro@igalia.com>

        -Wunused-variable in RenderLayer::updateScrollableAreaSet
        https://bugs.webkit.org/show_bug.cgi?id=190200

        Reviewed by Yusuke Suzuki.

        Add a new UNUSED_VARIABLE() macro. It's the same as UNUSED_PARAM(), just named differently.

        * wtf/Compiler.h:

2018-10-01  Dean Jackson  <dino@apple.com>

        [macOS] Switching to discrete GPU should be done in the UI process
        https://bugs.webkit.org/show_bug.cgi?id=189361
        <rdar://problem/43949622>

        Reviewed by Simon Fraser.

        Define GL_SILENCE_DEPRECATION to avoid deprecation warnings for OpenGL.

        * wtf/Platform.h:

2018-10-02  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r236624 and r236671.
        https://bugs.webkit.org/show_bug.cgi?id=190207

        The change in r236624 introduced crashes on the bots
        (Requested by ryanhaddad on #webkit).

        Reverted changesets:

        "Refactoring: eliminate raw pointer usage in Fullscreen code"
        https://bugs.webkit.org/show_bug.cgi?id=188747
        https://trac.webkit.org/changeset/236624

        "Unify implementation in VideoFullscreenInterfaceAVKit"
        https://bugs.webkit.org/show_bug.cgi?id=190091
        https://trac.webkit.org/changeset/236671

2018-10-02  Caio Lima  <ticaiolima@gmail.com>

        [BigInt] BigInt.proptotype.toString is broken when radix is power of 2
        https://bugs.webkit.org/show_bug.cgi?id=190033

        Reviewed by Yusuke Suzuki.

        * wtf/MathExtras.h:
        (WTF::ctz32):

2018-10-01  Andy Estes  <aestes@apple.com>

        [watchOS] Adopt NSURLSessionCompanionProxyPreference
        https://bugs.webkit.org/show_bug.cgi?id=190177
        <rdar://problem/43402114>

        Reviewed by Wenson Hsieh.

        * wtf/FeatureDefines.h:

2018-10-01  Koby Boyango  <koby.b@mce-sys.com>

        [WTF][JSCONLY] Use MainThreadWin on Windows in the JSCOnly port
        https://bugs.webkit.org/show_bug.cgi?id=190121

        Reviewed by Yusuke Suzuki.

        This fixes JSCOnly build on Windows after r236617.

        * wtf/PlatformJSCOnly.cmake:

2018-10-01  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r236647.
        https://bugs.webkit.org/show_bug.cgi?id=190124

        Breaking test stress/big-int-to-string.js (Requested by
        caiolima_ on #webkit).

        Reverted changeset:

        "[BigInt] BigInt.proptotype.toString is broken when radix is
        power of 2"
        https://bugs.webkit.org/show_bug.cgi?id=190033
        https://trac.webkit.org/changeset/236647

2018-09-30  Caio Lima  <ticaiolima@gmail.com>

        [BigInt] BigInt.proptotype.toString is broken when radix is power of 2
        https://bugs.webkit.org/show_bug.cgi?id=190033

        Reviewed by Yusuke Suzuki.

        * wtf/MathExtras.h:
        (WTF::ctz32):

2018-09-28  Jer Noble  <jer.noble@apple.com>

        Refactoring: eliminate raw pointer usage in Fullscreen code
        https://bugs.webkit.org/show_bug.cgi?id=188747
        <rdar://problem/43541164>

        Reviewed by Alex Christensen.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/WeakPtrContainer.h: Added.

2018-09-28  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        [WTF] Make isMainThread more reliable
        https://bugs.webkit.org/show_bug.cgi?id=189880

        Reviewed by Mark Lam.

        isMainThread() relied on Thread::current(). This API becomes broken in Windows
        when the Thread is about to be destroyed since TLS is already cleared. This causes
        a bug since `isMainThread()` is called in Thread::didExit in Windows.

        This patch makes this `isMainThread` more reliable in all the platforms. In Windows,
        we use `Thread::currentID()` instead of `Thread::current()` since `Thread::currentID`
        uses Win32 GetCurrentThreadId directly. In the other system, we use `pthread_main_np`
        or `pthread_self` instead.

        We also move `holdLock` code inside `if (shouldRemoveThreadFromThreadGroup())`. If
        the other thread takes a mutex and destroyed, this `holdLock` waits forever. This problem
        only happens in Windows since Windows calls TLS destructor for the main thread.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/MainThread.cpp:
        (WTF::initializeMainThread):
        (): Deleted.
        (WTF::isMainThread): Deleted.
        (WTF::isMainThreadIfInitialized): Deleted.
        * wtf/Platform.h:
        * wtf/PlatformMac.cmake:
        * wtf/Threading.cpp:
        (WTF::Thread::didExit):
        * wtf/cocoa/MainThreadCocoa.mm: Renamed from Source/WTF/wtf/mac/MainThreadMac.mm.
        * wtf/generic/MainThreadGeneric.cpp:
        (WTF::initializeMainThreadPlatform):
        (WTF::isMainThread):
        (WTF::isMainThreadIfInitialized):
        * wtf/win/MainThreadWin.cpp:
        (WTF::initializeMainThreadPlatform):
        (WTF::isMainThread):
        (WTF::isMainThreadIfInitialized):

2018-09-28  Commit Queue  <commit-queue@webkit.org>

        Unreviewed, rolling out r236605.
        https://bugs.webkit.org/show_bug.cgi?id=190087

        caused three API test timeouts (Requested by jernoble on
        #webkit).

        Reverted changeset:

        "Refactoring: eliminate raw pointer usage in Fullscreen code"
        https://bugs.webkit.org/show_bug.cgi?id=188747
        https://trac.webkit.org/changeset/236605

2018-09-28  Brian Burg  <bburg@apple.com>

        Replace recently added line comments in Compiler.h
        https://bugs.webkit.org/show_bug.cgi?id=190062
        <rdar://problem/44838618>

        Reviewed by Joseph Pecoraro.

        This breaks some Apple-internal tooling. For now, work around it by
        changing the comment style. On the other side, the issue will be fixed
        more permanently by adopting the approach from r230213.

        * wtf/Compiler.h: Use multiline comments.

2018-09-28  Jer Noble  <jer.noble@apple.com>

        Refactoring: eliminate raw pointer usage in Fullscreen code
        https://bugs.webkit.org/show_bug.cgi?id=188747
        <rdar://problem/43541164>

        Reviewed by Alex Christensen.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/WeakPtrContainer.h: Added.

2018-09-28  Koby Boyango  <koby.b@mce.systems>

        [WTF] Add ExternalStringImpl, a StringImpl for user controlled buffers
        https://bugs.webkit.org/show_bug.cgi?id=189991

        Reviewed by Yusuke Suzuki.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/text/ExternalStringImpl.cpp: Added.
        * wtf/text/ExternalStringImpl.h: Added.
        * wtf/text/StringImpl.cpp:
        * wtf/text/StringImpl.h:

2018-09-27  Saam barati  <sbarati@apple.com>

        Verify the contents of AssemblerBuffer on arm64e
        https://bugs.webkit.org/show_bug.cgi?id=190057
        <rdar://problem/38916630>

        Reviewed by Mark Lam.

        * wtf/PtrTag.h:
        (WTF::tagInt):

2018-09-27  Jer Noble  <jer.noble@apple.com>

        MediaPlayer should have mediaPlayerWaitingForKeyChanged() / bool waitingForKey() accessor
        https://bugs.webkit.org/show_bug.cgi?id=189951

        Reviewed by Eric Carlson.

        Templated functions should take r-value references, as they have perfect type deduction for
        all parameter types; references, l-value references, and r-value references in template function
        parameters have special type deduction semantics.
        See: <https://en.cppreference.com/w/cpp/language/reference#Forwarding_references>

        Previously, const reference parameters would be copied when passed into anyOf(), and containers
        of Ref<> would generate compile errors when passed into anyOf, as they cannot be copied. Now,
        with r-value reference types in template parameters, a const reference is mapped to a const reference,
        a non-const reference is mapped to a non-const reference, and a r-value reference is mapped to
        an r-value reference.

        * wtf/Algorithms.h:
        (WTF::forEach):
        (WTF::anyOf):
        (WTF::allOf):

2018-09-25  John Wilander  <wilander@apple.com>

        Change from HAVE(CFNETWORK_STORAGE_PARTITIONING) to ENABLE(RESOURCE_LOAD_STATISTICS)
        https://bugs.webkit.org/show_bug.cgi?id=189959
        <rdar://problem/44767642>

        Reviewed by Chris Dumez.

        * wtf/Platform.h:
            Enables RESOURCE_LOAD_STATISTICS for Cocoa platforms.

2018-09-24  Fujii Hironori  <Hironori.Fujii@sony.com>

        Rename WTF_COMPILER_GCC_OR_CLANG to WTF_COMPILER_GCC_COMPATIBLE
        https://bugs.webkit.org/show_bug.cgi?id=189733

        Reviewed by Michael Catanzaro.

        Clang for Windows build enables WTF_COMPILER_CLANG and
        WTF_COMPILER_MSVC, but disables WTF_COMPILER_GCC_OR_CLANG. It is
        strange WTF_COMPILER_GCC_OR_CLANG is not enabled even though
        WTF_COMPILER_CLANG is enabled. However, Clang for Windows imitates
        MSVC, and codes for COMPILER(GCC_OR_CLANG) are for non MSVC. At
        least at the moment, it is not feasible to define
        WTF_COMPILER_GCC_OR_CLANG for Clang for Windows.

        To solve the issue, this change renames WTF_COMPILER_GCC_OR_CLANG
        to WTF_COMPILER_GCC_COMPATIBLE.

        As an exception, I'd like to use IGNORE_WARNINGS_* macros even in
        Clang for Windows builds.

        * wtf/Assertions.cpp: Replaced COMPILER(GCC_OR_CLANG) with COMPILER(GCC_COMPATIBLE).
        * wtf/Assertions.h: Ditto.
        * wtf/Atomics.h: Ditto.
        * wtf/CheckedArithmetic.h: Ditto.
        * wtf/FastMalloc.h: Ditto.
        * wtf/MathExtras.h: Ditto.
        * wtf/Platform.h: Ditto.
        * wtf/StdLibExtras.h: Ditto.
        * wtf/Vector.h: Ditto.
        * wtf/text/ASCIIFastPath.h: Ditto.
        * wtf/Compiler.h:  Ditto. Replaced "COMPILER(GCC_OR_CLANG)" with "COMPILER(GCC) || COMPILER(CLANG)" of IGNORE_WARNINGS_* macros.

2018-09-21  Yusuke Suzuki  <yusukesuzuki@slowstart.org>

        [JSC] Enable LLInt ASM interpreter on X64 and ARM64 in non JIT configuration
        https://bugs.webkit.org/show_bug.cgi?id=189778

        Reviewed by Keith Miller.

        This patch adds ENABLE(C_LOOP) which indicates we use CLoop as the interpreter.
        Previously, we used !ENABLE(JIT) for this configuration. But now, we have
        a build configuration that has LLInt ASM interpreter (not CLoop) and !ENABLE(JIT).

        We enable LLInt ASM interpreter for non JIT environment in X86_64 and ARM64 architectures.
        And we enable ENABLE(ASSEMBLER) for non JIT environment since it offers machine register
        information which is used for LLInt and SamplingProfiler.

        * wtf/Platform.h:

2018-09-21  Keith Miller  <keith_miller@apple.com>

        Add Promise SPI
        https://bugs.webkit.org/show_bug.cgi?id=189809

        Reviewed by Saam Barati.

        Fix issue where creating a JSContextRef off the main thread before
        creating initializing the main thread would cause an assertion
        failure.

        * wtf/MainThread.cpp:
        (WTF::isMainThreadIfInitialized):
        * wtf/MainThread.h:
        * wtf/mac/MainThreadMac.mm:
        (WTF::isMainThreadIfInitialized):
        * wtf/text/cf/StringImplCF.cpp:
        (WTF::StringImpl::createCFString):

2018-09-21  Ryan Haddad  <ryanhaddad@apple.com>

        Unreviewed, rolling out r236359.

        Broke the Windows build.

        Reverted changeset:

        "Add Promise SPI"
        https://bugs.webkit.org/show_bug.cgi?id=189809
        https://trac.webkit.org/changeset/236359

2018-09-21  Keith Miller  <keith_miller@apple.com>

        Add Promise SPI
        https://bugs.webkit.org/show_bug.cgi?id=189809

        Reviewed by Saam Barati.

        Fix issue where creating a JSContextRef off the main thread before
        creating initializing the main thread would cause an assertion
        failure.

        * wtf/MainThread.cpp:
        (WTF::isMainThreadIfInitialized):
        * wtf/MainThread.h:
        * wtf/mac/MainThreadMac.mm:
        (WTF::isMainThreadIfInitialized):
        * wtf/text/cf/StringImplCF.cpp:
        (WTF::StringImpl::createCFString):

2018-09-20  Fujii Hironori  <Hironori.Fujii@sony.com>

        [Win][Clang] UNUSED_PARAM(this) causes compilation error of "cannot take the address of an rvalue of type"
        https://bugs.webkit.org/show_bug.cgi?id=189732

        Reviewed by Per Arne Vollan.

        Clang for Windows can't compile the MSVC workaround of
        UNUSED_PARAM which has been introduced for Windows CE and Visual
        Studio 10. I think it's safe just to remove it.

        * wtf/Compiler.h: Removed the code for COMPILER(MSVC).

2018-09-20  Alex Christensen  <achristensen@webkit.org>

        Unreviewed, rolling out r235976.

        Broke ARM

        Reverted changeset:

        "Use a Variant instead of a union in CSSSelector"
        https://bugs.webkit.org/show_bug.cgi?id=188559
        https://trac.webkit.org/changeset/235976

2018-09-17  Yusuke Suzuki  <utatane.tea@gmail.com>

        [WTF] Use Semaphore and BinarySemaphore instead of dispatch_semaphore_t
        https://bugs.webkit.org/show_bug.cgi?id=185339

        Reviewed by Mark Lam.

        This patch adds WTF::Semaphore, which is based on WTF::Lock and WTF::Condition.

        * WTF.xcodeproj/project.pbxproj:
        * wtf/CMakeLists.txt:
        * wtf/Semaphore.h: Added.
        (WTF::Semaphore::Semaphore):
        (WTF::Semaphore::signal):
        (WTF::Semaphore::waitUntil):
        (WTF::Semaphore::waitFor):
        (WTF::Semaphore::wait):
        * wtf/generic/WorkQueueGeneric.cpp:
        (WorkQueue::platformInitialize):
        * wtf/threads/BinarySemaphore.cpp:
        (WTF::BinarySemaphore::waitUntil):
        (WTF::BinarySemaphore::wait): Deleted.
        * wtf/threads/BinarySemaphore.h:
        (WTF::BinarySemaphore::waitFor):
        (WTF::BinarySemaphore::wait):
        Align the names of the functions to WTF::Condition.
        Add BinarySemaphore::wait(), which is the same to waitUntil(WallTime::infinity()).

2018-09-17  Jer Noble  <jer.noble@apple.com>

        Add support for HEVC codec types in Media Capabilities
        https://bugs.webkit.org/show_bug.cgi?id=189565

        Reviewed by Eric Carlson.

        Extract the toIntegralType template into its own header.

        * wtf/CMakeLists.txt:
        * wtf/text/StringConversion.h: Added.
        (isCharacterAllowedInBase):
        (toIntegralType):
        * wtf/text/WTFString.cpp:

2018-09-17  Jer Noble  <jer.noble@apple.com>

        Enable USE_MEDIAREMOTE on iOS
        https://bugs.webkit.org/show_bug.cgi?id=189096

        Reviewed by Eric Carlson.

        * wtf/Platform.h:

2018-09-17  Frederic Wang  <fwang@igalia.com>

        Build error in ImageBufferCG when compiled with IOSurfacePool
        https://bugs.webkit.org/show_bug.cgi?id=189579

        Reviewed by Tim Horton.

        IOSurface.h might be included with different value of IOSURFACE_CANVAS_BACKING_STORE, causing
        compilation errors when files in the same unified source do not agree on the definition.
        This patch moves the definition of IOSURFACE_CANVAS_BACKING_STORE from ImageBufferDataCG.h
        to Platform.h so that IOSURFACE_CANVAS_BACKING_STORE is set to the same value in all files.
        Finally some minors changes to explicitly declare/define ImageBuffer are performed in order
        to prevent future issues with Unified build rotating.

        * wtf/Platform.h: Move definition from ImageBufferDataCG.h.

2018-09-14  Ryan Haddad  <ryanhaddad@apple.com>

        Unreviewed, rolling out r235990.

        Introduced TestWebKitAPI.NowPlayingTest timeouts on iOS

        Reverted changeset:

        "Enable USE_MEDIAREMOTE on iOS"
        https://bugs.webkit.org/show_bug.cgi?id=189096
        https://trac.webkit.org/changeset/235990

2018-09-13  Jer Noble  <jer.noble@apple.com>

        Enable USE_MEDIAREMOTE on iOS
        https://bugs.webkit.org/show_bug.cgi?id=189096

        Reviewed by Eric Carlson.

        * wtf/Platform.h:

2018-09-13  Alex Christensen  <achristensen@webkit.org>

        Use a Variant instead of a union in CSSSelector
        https://bugs.webkit.org/show_bug.cgi?id=188559

        Reviewed by Antti Koivisto.

        * wtf/Variant.h:
        Add packing macros to make it so Variant-containing structures don't always have 7 bytes of padding per Variant.

2018-09-12  Guillaume Emont  <guijemont@igalia.com>

        Add IGNORE_WARNING_.* macros
        https://bugs.webkit.org/show_bug.cgi?id=188996

        Reviewed by Michael Catanzaro.

        * wtf/Assertions.cpp:
        * wtf/Assertions.h:
        * wtf/Compiler.h:
        * wtf/MD5.cpp:
        (WTF::MD5::MD5):
        (WTF::MD5::addBytes):
        (WTF::MD5::checksum):
        * wtf/PrintStream.cpp:
        (WTF::PrintStream::printfVariableFormat):
        * wtf/SHA1.cpp:
        (WTF::SHA1::SHA1):
        (WTF::SHA1::addBytes):
        (WTF::SHA1::computeHash):
        * wtf/ThreadingPthreads.cpp:
        * wtf/Vector.h:
        (WTF::VectorBuffer::endOfBuffer):
        * wtf/text/WTFString.cpp:
        (WTF::createWithFormatAndArguments):

== Rolled over to ChangeLog-2018-09-11 ==