mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-12 03:36:54 +00:00
76 lines
3.0 KiB
C++
76 lines
3.0 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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#include "config.h"
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#include "DFGDesiredGlobalProperties.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 "DFGDesiredIdentifiers.h"
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#include "JSGlobalObject.h"
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namespace JSC { namespace DFG {
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bool DesiredGlobalProperties::isStillValidOnMainThread(VM& vm, DesiredIdentifiers& identifiers)
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{
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bool isStillValid = true;
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for (const auto& property : m_set) {
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auto* uid = identifiers.at(property.identifierNumber());
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JSGlobalObject* globalObject = property.globalObject();
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{
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SymbolTable* symbolTable = globalObject->globalLexicalEnvironment()->symbolTable();
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ConcurrentJSLocker locker(symbolTable->m_lock);
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if (!symbolTable->contains(locker, uid))
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continue;
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}
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// Set invalidated WatchpointSet here to prevent further compile-and-fail loop.
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property.globalObject()->ensureReferencedPropertyWatchpointSet(uid).fireAll(vm, "Lexical binding shadows an existing global property");
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isStillValid = false;
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}
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return isStillValid;
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}
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void DesiredGlobalProperties::reallyAdd(CodeBlock* codeBlock, DesiredIdentifiers& identifiers, CommonData& common)
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{
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for (const auto& property : m_set) {
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auto* uid = identifiers.at(property.identifierNumber());
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auto& watchpointSet = property.globalObject()->ensureReferencedPropertyWatchpointSet(uid);
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ASSERT(watchpointSet.isStillValid());
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CodeBlockJettisoningWatchpoint* watchpoint = nullptr;
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{
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ConcurrentJSLocker locker(codeBlock->m_lock);
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watchpoint = common.watchpoints.add(codeBlock);
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}
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watchpointSet.add(WTFMove(watchpoint));
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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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