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/*
* Copyright (C) 2015-2021 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 "FunctionRareData.h"
#include "JSCInlines.h"
#include "ObjectAllocationProfileInlines.h"
namespace JSC {
const ClassInfo FunctionRareData::s_info = { "FunctionRareData"_s, nullptr, nullptr, nullptr, CREATE_METHOD_TABLE(FunctionRareData) };
FunctionRareData* FunctionRareData::create(VM& vm, ExecutableBase* executable)
{
FunctionRareData* rareData = new (NotNull, allocateCell<FunctionRareData>(vm)) FunctionRareData(vm, executable);
rareData->finishCreation(vm);
return rareData;
}
void FunctionRareData::destroy(JSCell* cell)
{
FunctionRareData* rareData = static_cast<FunctionRareData*>(cell);
rareData->FunctionRareData::~FunctionRareData();
}
Structure* FunctionRareData::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(vm, globalObject, prototype, TypeInfo(CellType, StructureFlags), info());
}
template<typename Visitor>
void FunctionRareData::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
FunctionRareData* rareData = jsCast<FunctionRareData*>(cell);
ASSERT_GC_OBJECT_INHERITS(cell, info());
Base::visitChildren(cell, visitor);
rareData->m_objectAllocationProfile.visitAggregate(visitor);
rareData->m_internalFunctionAllocationProfile.visitAggregate(visitor);
visitor.append(rareData->m_boundFunctionStructureID);
visitor.append(rareData->m_executable);
}
DEFINE_VISIT_CHILDREN(FunctionRareData);
FunctionRareData::FunctionRareData(VM& vm, ExecutableBase* executable)
: Base(vm, vm.functionRareDataStructure.get())
, m_objectAllocationProfile()
// We initialize blind so that changes to the prototype after function creation but before
// the first allocation don't disable optimizations. This isn't super important, since the
// function is unlikely to allocate a rare data until the first allocation anyway.
, m_allocationProfileWatchpointSet(ClearWatchpoint)
, m_executable(executable, WriteBarrierEarlyInit)
, m_hasReifiedLength(false)
, m_hasReifiedName(false)
, m_hasModifiedLengthForBoundOrNonHostFunction(false)
, m_hasModifiedNameForBoundOrNonHostFunction(false)
{
}
FunctionRareData::~FunctionRareData() = default;
void FunctionRareData::initializeObjectAllocationProfile(VM& vm, JSGlobalObject* globalObject, JSObject* prototype, size_t inlineCapacity, JSFunction* constructor)
{
initializeAllocationProfileWatchpointSet();
m_objectAllocationProfile.initializeProfile(vm, globalObject, this, prototype, inlineCapacity, constructor, this);
}
void FunctionRareData::clear(const char* reason)
{
m_objectAllocationProfile.clear();
m_internalFunctionAllocationProfile.clear();
m_allocationProfileWatchpointSet.fireAll(vm(), reason);
}
void FunctionRareData::AllocationProfileClearingWatchpoint::fireInternal(VM&, const FireDetail&)
{
m_rareData->clear("AllocationProfileClearingWatchpoint fired.");
}
}
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