| /* |
| * Copyright (C) 2019 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. |
| */ |
| |
| #pragma once |
| |
| #include "CacheUpdate.h" |
| #include "LeafExecutable.h" |
| #include "ParserModes.h" |
| #include <wtf/MallocPtr.h> |
| #include <wtf/Noncopyable.h> |
| #include <wtf/RefCounted.h> |
| #include <wtf/Vector.h> |
| |
| namespace JSC { |
| |
| class UnlinkedFunctionExecutable; |
| |
| class CachedBytecode : public RefCounted<CachedBytecode> { |
| WTF_MAKE_NONCOPYABLE(CachedBytecode); |
| |
| public: |
| static Ref<CachedBytecode> create() |
| { |
| return adoptRef(*new CachedBytecode(CachePayload::makeEmptyPayload())); |
| } |
| |
| static Ref<CachedBytecode> create(FileSystem::MappedFileData&& data, LeafExecutableMap&& leafExecutables = { }) |
| { |
| return adoptRef(*new CachedBytecode(CachePayload::makeMappedPayload(WTFMove(data)), WTFMove(leafExecutables))); |
| } |
| |
| static Ref<CachedBytecode> create(MallocPtr<uint8_t, VMMalloc>&& data, size_t size, LeafExecutableMap&& leafExecutables) |
| { |
| return adoptRef(*new CachedBytecode(CachePayload::makeMallocPayload(WTFMove(data), size), WTFMove(leafExecutables))); |
| } |
| |
| LeafExecutableMap& leafExecutables() { return m_leafExecutables; } |
| |
| JS_EXPORT_PRIVATE void addGlobalUpdate(Ref<CachedBytecode>); |
| JS_EXPORT_PRIVATE void addFunctionUpdate(const UnlinkedFunctionExecutable*, CodeSpecializationKind, Ref<CachedBytecode>); |
| |
| using ForEachUpdateCallback = Function<void(off_t, const void*, size_t)>; |
| JS_EXPORT_PRIVATE void commitUpdates(const ForEachUpdateCallback&) const; |
| |
| const uint8_t* data() const { return m_payload.data(); } |
| size_t size() const { return m_payload.size(); } |
| bool hasUpdates() const { return !m_updates.isEmpty(); } |
| size_t sizeForUpdate() const { return m_size; } |
| |
| private: |
| CachedBytecode(CachePayload&& payload, LeafExecutableMap&& leafExecutables = { }) |
| : m_size(payload.size()) |
| , m_payload(WTFMove(payload)) |
| , m_leafExecutables(WTFMove(leafExecutables)) |
| { |
| } |
| |
| void copyLeafExecutables(const CachedBytecode&); |
| |
| size_t m_size { 0 }; |
| CachePayload m_payload; |
| LeafExecutableMap m_leafExecutables; |
| Vector<CacheUpdate> m_updates; |
| }; |
| |
| |
| } // namespace JSC |