mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-26 21:50:53 +00:00
90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "CacheUpdate.h"
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#include "LeafExecutable.h"
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#include "ParserModes.h"
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#include <wtf/MallocPtr.h>
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#include <wtf/Noncopyable.h>
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#include <wtf/RefCounted.h>
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#include <wtf/Vector.h>
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namespace JSC {
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class UnlinkedFunctionExecutable;
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class CachedBytecode : public RefCounted<CachedBytecode> {
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WTF_MAKE_NONCOPYABLE(CachedBytecode);
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public:
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static Ref<CachedBytecode> create()
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{
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return adoptRef(*new CachedBytecode(CachePayload::makeEmptyPayload()));
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}
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static Ref<CachedBytecode> create(FileSystem::MappedFileData&& data, LeafExecutableMap&& leafExecutables = { })
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{
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return adoptRef(*new CachedBytecode(CachePayload::makeMappedPayload(WTFMove(data)), WTFMove(leafExecutables)));
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}
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static Ref<CachedBytecode> create(MallocPtr<uint8_t, VMMalloc>&& data, size_t size, LeafExecutableMap&& leafExecutables)
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{
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return adoptRef(*new CachedBytecode(CachePayload::makeMallocPayload(WTFMove(data), size), WTFMove(leafExecutables)));
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}
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LeafExecutableMap& leafExecutables() { return m_leafExecutables; }
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JS_EXPORT_PRIVATE void addGlobalUpdate(Ref<CachedBytecode>);
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JS_EXPORT_PRIVATE void addFunctionUpdate(const UnlinkedFunctionExecutable*, CodeSpecializationKind, Ref<CachedBytecode>);
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using ForEachUpdateCallback = Function<void(off_t, const void*, size_t)>;
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JS_EXPORT_PRIVATE void commitUpdates(const ForEachUpdateCallback&) const;
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const uint8_t* data() const { return m_payload.data(); }
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size_t size() const { return m_payload.size(); }
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bool hasUpdates() const { return !m_updates.isEmpty(); }
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size_t sizeForUpdate() const { return m_size; }
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private:
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CachedBytecode(CachePayload&& payload, LeafExecutableMap&& leafExecutables = { })
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: m_size(payload.size())
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, m_payload(WTFMove(payload))
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, m_leafExecutables(WTFMove(leafExecutables))
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{
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}
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void copyLeafExecutables(const CachedBytecode&);
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size_t m_size { 0 };
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CachePayload m_payload;
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LeafExecutableMap m_leafExecutables;
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Vector<CacheUpdate> m_updates;
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};
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} // namespace JSC
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