105 lines
3.7 KiB
C++
105 lines
3.7 KiB
C++
/*
|
|
* Copyright (C) 2016-2019 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.
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "LLIntPrototypeLoadAdaptiveStructureWatchpoint.h"
|
|
|
|
#include "CodeBlock.h"
|
|
#include "Instruction.h"
|
|
#include "JSCellInlines.h"
|
|
|
|
namespace JSC {
|
|
|
|
LLIntPrototypeLoadAdaptiveStructureWatchpoint::LLIntPrototypeLoadAdaptiveStructureWatchpoint(CodeBlock* owner, const ObjectPropertyCondition& key, unsigned bytecodeOffset)
|
|
: Watchpoint(Watchpoint::Type::LLIntPrototypeLoadAdaptiveStructure)
|
|
, m_owner(owner)
|
|
, m_bytecodeOffset(bytecodeOffset)
|
|
, m_key(key)
|
|
{
|
|
RELEASE_ASSERT(key.watchingRequiresStructureTransitionWatchpoint());
|
|
RELEASE_ASSERT(!key.watchingRequiresReplacementWatchpoint());
|
|
}
|
|
|
|
LLIntPrototypeLoadAdaptiveStructureWatchpoint::LLIntPrototypeLoadAdaptiveStructureWatchpoint()
|
|
: Watchpoint(Watchpoint::Type::LLIntPrototypeLoadAdaptiveStructure)
|
|
, m_owner(nullptr)
|
|
, m_bytecodeOffset(0)
|
|
{
|
|
}
|
|
|
|
void LLIntPrototypeLoadAdaptiveStructureWatchpoint::initialize(CodeBlock* codeBlock, const ObjectPropertyCondition& key, unsigned bytecodeOffset)
|
|
{
|
|
m_owner = codeBlock;
|
|
m_bytecodeOffset = bytecodeOffset;
|
|
m_key = key;
|
|
}
|
|
|
|
void LLIntPrototypeLoadAdaptiveStructureWatchpoint::install(VM& vm)
|
|
{
|
|
RELEASE_ASSERT(m_key.isWatchable());
|
|
|
|
m_key.object()->structure(vm)->addTransitionWatchpoint(this);
|
|
}
|
|
|
|
void LLIntPrototypeLoadAdaptiveStructureWatchpoint::fireInternal(VM& vm, const FireDetail&)
|
|
{
|
|
if (!m_owner->isLive())
|
|
return;
|
|
|
|
if (m_key.isWatchable(PropertyCondition::EnsureWatchability)) {
|
|
install(vm);
|
|
return;
|
|
}
|
|
|
|
auto& instruction = m_owner->instructions().at(m_bytecodeOffset.get());
|
|
switch (instruction->opcodeID()) {
|
|
case op_get_by_id:
|
|
clearLLIntGetByIdCache(instruction->as<OpGetById>().metadata(m_owner.get()).m_modeMetadata);
|
|
break;
|
|
|
|
case op_iterator_open:
|
|
clearLLIntGetByIdCache(instruction->as<OpIteratorOpen>().metadata(m_owner.get()).m_modeMetadata);
|
|
break;
|
|
|
|
case op_iterator_next: {
|
|
auto& metadata = instruction->as<OpIteratorNext>().metadata(m_owner.get());
|
|
clearLLIntGetByIdCache(metadata.m_doneModeMetadata);
|
|
clearLLIntGetByIdCache(metadata.m_valueModeMetadata);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
RELEASE_ASSERT_NOT_REACHED();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void LLIntPrototypeLoadAdaptiveStructureWatchpoint::clearLLIntGetByIdCache(GetByIdModeMetadata& metadata)
|
|
{
|
|
metadata.clearToDefaultModeWithoutCache();
|
|
}
|
|
|
|
} // namespace JSC
|