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JITStubRoutine.cpp
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122 lines (109 loc) · 3.75 KB
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/*
* Copyright (C) 2012, 2014 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 "JITStubRoutine.h"
#include "AccessCase.h"
#include "CallLinkInfo.h"
#include "GCAwareJITStubRoutine.h"
#include "PolymorphicCallStubRoutine.h"
namespace JSC {
void JITStubRoutine::observeZeroRefCountImpl()
{
RELEASE_ASSERT(!m_refCount);
delete this;
}
template<typename Func>
void JITStubRoutine::runWithDowncast(const Func& function)
{
switch (m_type) {
case Type::JITStubRoutineType:
function(static_cast<JITStubRoutine*>(this));
break;
case Type::GCAwareJITStubRoutineType:
function(static_cast<GCAwareJITStubRoutine*>(this));
break;
case Type::PolymorphicCallStubRoutineType:
function(static_cast<PolymorphicCallStubRoutine*>(this));
break;
#if ENABLE(JIT)
case Type::PolymorphicAccessJITStubRoutineType:
function(static_cast<PolymorphicAccessJITStubRoutine*>(this));
break;
case Type::MarkingGCAwareJITStubRoutineType:
function(static_cast<MarkingGCAwareJITStubRoutine*>(this));
break;
case Type::GCAwareJITStubRoutineWithExceptionHandlerType:
function(static_cast<GCAwareJITStubRoutineWithExceptionHandler*>(this));
break;
#endif
}
}
void JITStubRoutine::aboutToDie()
{
runWithDowncast([&](auto* derived) {
derived->aboutToDieImpl();
});
}
void JITStubRoutine::observeZeroRefCount()
{
runWithDowncast([&](auto* derived) {
derived->observeZeroRefCountImpl();
});
}
bool JITStubRoutine::visitWeak(VM& vm)
{
bool result = true;
runWithDowncast([&](auto* derived) {
result = derived->visitWeakImpl(vm);
});
return result;
}
CallLinkInfo* JITStubRoutine::callLinkInfoAt(const ConcurrentJSLocker& locker, unsigned index)
{
CallLinkInfo* result = nullptr;
runWithDowncast([&](auto* derived) {
result = derived->callLinkInfoAtImpl(locker, index);
});
return result;
}
void JITStubRoutine::markRequiredObjects(AbstractSlotVisitor& visitor)
{
runWithDowncast([&](auto* derived) {
derived->markRequiredObjectsImpl(visitor);
});
}
void JITStubRoutine::markRequiredObjects(SlotVisitor& visitor)
{
runWithDowncast([&](auto* derived) {
derived->markRequiredObjectsImpl(visitor);
});
}
void JITStubRoutine::operator delete(JITStubRoutine* stubRoutine, std::destroying_delete_t)
{
stubRoutine->runWithDowncast([&](auto* derived) {
std::decay_t<decltype(*derived)>::destroy(derived);
});
}
} // namespace JSC