mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
/*
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* Copyright (C) 2015-2017 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 "AdaptiveInferredPropertyValueWatchpointBase.h"
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#include "JSCInlines.h"
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namespace JSC {
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AdaptiveInferredPropertyValueWatchpointBase::AdaptiveInferredPropertyValueWatchpointBase(const ObjectPropertyCondition& key)
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: m_key(key)
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{
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RELEASE_ASSERT(key.kind() == PropertyCondition::Equivalence);
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}
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void AdaptiveInferredPropertyValueWatchpointBase::install(VM& vm)
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{
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RELEASE_ASSERT(m_key.isWatchable());
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Structure* structure = m_key.object()->structure(vm);
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structure->addTransitionWatchpoint(&m_structureWatchpoint);
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PropertyOffset offset = structure->getConcurrently(m_key.uid());
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WatchpointSet* set = structure->propertyReplacementWatchpointSet(offset);
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set->add(&m_propertyWatchpoint);
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}
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void AdaptiveInferredPropertyValueWatchpointBase::fire(VM& vm, const FireDetail& detail)
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{
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// One of the watchpoints fired, but the other one didn't. Make sure that neither of them are
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// in any set anymore. This simplifies things by allowing us to reinstall the watchpoints
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// wherever from scratch.
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if (m_structureWatchpoint.isOnList())
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m_structureWatchpoint.remove();
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if (m_propertyWatchpoint.isOnList())
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m_propertyWatchpoint.remove();
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if (!isValid())
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return;
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if (m_key.isWatchable(PropertyCondition::EnsureWatchability)) {
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install(vm);
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return;
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}
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handleFire(vm, detail);
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}
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bool AdaptiveInferredPropertyValueWatchpointBase::isValid() const
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{
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return true;
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}
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void AdaptiveInferredPropertyValueWatchpointBase::StructureWatchpoint::fireInternal(VM& vm, const FireDetail& detail)
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{
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ptrdiff_t myOffset = OBJECT_OFFSETOF(AdaptiveInferredPropertyValueWatchpointBase, m_structureWatchpoint);
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AdaptiveInferredPropertyValueWatchpointBase* parent = bitwise_cast<AdaptiveInferredPropertyValueWatchpointBase*>(bitwise_cast<char*>(this) - myOffset);
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parent->fire(vm, detail);
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}
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void AdaptiveInferredPropertyValueWatchpointBase::PropertyWatchpoint::fireInternal(VM& vm, const FireDetail& detail)
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{
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ptrdiff_t myOffset = OBJECT_OFFSETOF(AdaptiveInferredPropertyValueWatchpointBase, m_propertyWatchpoint);
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AdaptiveInferredPropertyValueWatchpointBase* parent = bitwise_cast<AdaptiveInferredPropertyValueWatchpointBase*>(bitwise_cast<char*>(this) - myOffset);
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parent->fire(vm, detail);
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}
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} // namespace JSC
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