| /* |
| * Copyright (C) 2006-2021 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "config.h" |
| #import "SharedBuffer.h" |
| |
| #import "WebCoreJITOperations.h" |
| #import "WebCoreObjCExtras.h" |
| #import <JavaScriptCore/InitializeThreading.h> |
| #import <string.h> |
| #import <wtf/MainThread.h> |
| #import <wtf/cocoa/TypeCastsCocoa.h> |
| #import <wtf/cocoa/VectorCocoa.h> |
| |
| @interface WebCoreSharedBufferData : NSData |
| - (instancetype)initWithDataSegment:(const WebCore::DataSegment&)dataSegment position:(NSUInteger)position size:(NSUInteger)size; |
| @end |
| |
| @implementation WebCoreSharedBufferData { |
| RefPtr<const WebCore::DataSegment> _dataSegment; |
| NSUInteger _position; |
| NSUInteger _size; |
| } |
| |
| + (void)initialize |
| { |
| #if !USE(WEB_THREAD) |
| JSC::initialize(); |
| WTF::initializeMainThread(); |
| WebCore::populateJITOperations(); |
| #endif // !USE(WEB_THREAD) |
| } |
| |
| - (void)dealloc |
| { |
| if (WebCoreObjCScheduleDeallocateOnMainThread([WebCoreSharedBufferData class], self)) |
| return; |
| |
| [super dealloc]; |
| } |
| |
| - (instancetype)initWithDataSegment:(const WebCore::DataSegment&)dataSegment position:(NSUInteger)position size:(NSUInteger)size |
| { |
| if (!(self = [super init])) |
| return nil; |
| |
| RELEASE_ASSERT(position <= dataSegment.size()); |
| RELEASE_ASSERT(size <= dataSegment.size() - position); |
| _dataSegment = &dataSegment; |
| _position = position; |
| _size = size; |
| return self; |
| } |
| |
| - (NSUInteger)length |
| { |
| return _size; |
| } |
| |
| - (const void *)bytes |
| { |
| return _dataSegment->data() + _position; |
| } |
| |
| @end |
| |
| namespace WebCore { |
| |
| Ref<FragmentedSharedBuffer> FragmentedSharedBuffer::create(NSData *data) |
| { |
| return adoptRef(*new FragmentedSharedBuffer(bridge_cast(data))); |
| } |
| |
| void FragmentedSharedBuffer::append(NSData *data) |
| { |
| ASSERT(!m_contiguous); |
| return append(bridge_cast(data)); |
| } |
| |
| RetainPtr<NSData> SharedBuffer::createNSData() const |
| { |
| return bridge_cast(createCFData()); |
| } |
| |
| RetainPtr<CFDataRef> SharedBuffer::createCFData() const |
| { |
| if (!m_segments.size()) |
| return adoptCF(CFDataCreate(nullptr, nullptr, 0)); |
| return bridge_cast(m_segments[0].segment->createNSData()); |
| } |
| |
| RetainPtr<NSArray> FragmentedSharedBuffer::createNSDataArray() const |
| { |
| return createNSArray(m_segments, [] (auto& segment) { |
| return segment.segment->createNSData(); |
| }); |
| } |
| |
| RetainPtr<NSData> DataSegment::createNSData() const |
| { |
| return adoptNS([[WebCoreSharedBufferData alloc] initWithDataSegment:*this position:0 size:size()]); |
| } |
| |
| RetainPtr<NSData> SharedBufferDataView::createNSData() const |
| { |
| return adoptNS([[WebCoreSharedBufferData alloc] initWithDataSegment:m_segment.get() position:m_positionWithinSegment size:size()]); |
| } |
| |
| } // namespace WebCore |