mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
/*
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* Copyright (C) 2013-2020 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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#include "config.h"
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#include "DFGDesiredIdentifiers.h"
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#if ENABLE(DFG_JIT)
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#include "CodeBlock.h"
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#include "DFGCommonData.h"
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#include "IdentifierInlines.h"
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#ifdef DARLING
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#include "JSCellInlines.h"
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#endif
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namespace JSC { namespace DFG {
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DesiredIdentifiers::DesiredIdentifiers()
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: m_codeBlock(nullptr)
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, m_didProcessIdentifiers(false)
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{
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}
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DesiredIdentifiers::DesiredIdentifiers(CodeBlock* codeBlock)
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: m_codeBlock(codeBlock)
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, m_didProcessIdentifiers(false)
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{
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}
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DesiredIdentifiers::~DesiredIdentifiers()
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{
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}
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unsigned DesiredIdentifiers::numberOfIdentifiers()
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{
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return m_codeBlock->numberOfIdentifiers() + m_addedIdentifiers.size();
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}
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unsigned DesiredIdentifiers::ensure(UniquedStringImpl* rep)
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{
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if (!m_didProcessIdentifiers) {
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// Do this now instead of the constructor so that we don't pay the price on the main
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// thread. Also, not all compilations need to call ensure().
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for (unsigned index = m_codeBlock->numberOfIdentifiers(); index--;)
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m_identifierNumberForName.add(m_codeBlock->identifier(index).impl(), index);
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m_didProcessIdentifiers = true;
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}
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auto addResult = m_identifierNumberForName.add(rep, numberOfIdentifiers());
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unsigned result = addResult.iterator->value;
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if (addResult.isNewEntry) {
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m_addedIdentifiers.append(rep);
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ASSERT(at(result) == rep);
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}
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return result;
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}
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UniquedStringImpl* DesiredIdentifiers::at(unsigned index) const
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{
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UniquedStringImpl* result;
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if (index < m_codeBlock->numberOfIdentifiers())
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result = m_codeBlock->identifier(index).impl();
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else
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result = m_addedIdentifiers[index - m_codeBlock->numberOfIdentifiers()];
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ASSERT(result->hasAtLeastOneRef());
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return result;
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}
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void DesiredIdentifiers::reallyAdd(VM& vm, CommonData* commonData)
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{
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for (auto rep : m_addedIdentifiers) {
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ASSERT(rep->hasAtLeastOneRef());
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Identifier uid = Identifier::fromUid(vm, rep);
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{
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ConcurrentJSLocker locker(m_codeBlock->m_lock);
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commonData->dfgIdentifiers.append(WTFMove(uid));
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}
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}
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}
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} } // namespace JSC::DFG
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#endif // ENABLE(DFG_JIT)
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