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/*
* Copyright (C) 2012 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#ifndef SlotVisitorInlines_h
#define SlotVisitorInlines_h
#include "CopiedBlockInlines.h"
#include "CopiedSpaceInlines.h"
#include "Options.h"
#include "SlotVisitor.h"
#include "Weak.h"
namespace JSC {
ALWAYS_INLINE void SlotVisitor::append(JSValue* slot, size_t count)
{
for (size_t i = 0; i < count; ++i) {
JSValue& value = slot[i];
internalAppend(value);
}
}
template<typename T>
inline void SlotVisitor::appendUnbarrieredPointer(T** slot)
{
ASSERT(slot);
JSCell* cell = *slot;
internalAppend(cell);
}
ALWAYS_INLINE void SlotVisitor::append(JSValue* slot)
{
ASSERT(slot);
internalAppend(*slot);
}
ALWAYS_INLINE void SlotVisitor::appendUnbarrieredValue(JSValue* slot)
{
ASSERT(slot);
internalAppend(*slot);
}
ALWAYS_INLINE void SlotVisitor::append(JSCell** slot)
{
ASSERT(slot);
internalAppend(*slot);
}
template<typename T>
ALWAYS_INLINE void SlotVisitor::appendUnbarrieredWeak(Weak<T>* weak)
{
ASSERT(weak);
if (weak->get())
internalAppend(weak->get());
}
ALWAYS_INLINE void SlotVisitor::internalAppend(JSValue value)
{
if (!value || !value.isCell())
return;
internalAppend(value.asCell());
}
inline void SlotVisitor::addWeakReferenceHarvester(WeakReferenceHarvester* weakReferenceHarvester)
{
m_shared.m_weakReferenceHarvesters.addThreadSafe(weakReferenceHarvester);
}
inline void SlotVisitor::addUnconditionalFinalizer(UnconditionalFinalizer* unconditionalFinalizer)
{
m_shared.m_unconditionalFinalizers.addThreadSafe(unconditionalFinalizer);
}
inline void SlotVisitor::addOpaqueRoot(void* root)
{
#if ENABLE(PARALLEL_GC)
if (Options::numberOfGCMarkers() == 1) {
// Put directly into the shared HashSet.
m_shared.m_opaqueRoots.add(root);
return;
}
// Put into the local set, but merge with the shared one every once in
// a while to make sure that the local sets don't grow too large.
mergeOpaqueRootsIfProfitable();
m_opaqueRoots.add(root);
#else
m_opaqueRoots.add(root);
#endif
}
inline bool SlotVisitor::containsOpaqueRoot(void* root)
{
ASSERT(!m_isInParallelMode);
#if ENABLE(PARALLEL_GC)
ASSERT(m_opaqueRoots.isEmpty());
return m_shared.m_opaqueRoots.contains(root);
#else
return m_opaqueRoots.contains(root);
#endif
}
inline int SlotVisitor::opaqueRootCount()
{
ASSERT(!m_isInParallelMode);
#if ENABLE(PARALLEL_GC)
ASSERT(m_opaqueRoots.isEmpty());
return m_shared.m_opaqueRoots.size();
#else
return m_opaqueRoots.size();
#endif
}
inline void SlotVisitor::mergeOpaqueRootsIfNecessary()
{
if (m_opaqueRoots.isEmpty())
return;
mergeOpaqueRoots();
}
inline void SlotVisitor::mergeOpaqueRootsIfProfitable()
{
if (static_cast<unsigned>(m_opaqueRoots.size()) < Options::opaqueRootMergeThreshold())
return;
mergeOpaqueRoots();
}
inline void SlotVisitor::donate()
{
ASSERT(m_isInParallelMode);
if (Options::numberOfGCMarkers() == 1)
return;
donateKnownParallel();
}
inline void SlotVisitor::donateAndDrain()
{
donate();
drain();
}
inline void SlotVisitor::copyLater(JSCell* owner, void* ptr, size_t bytes)
{
if (CopiedSpace::isOversize(bytes)) {
m_shared.m_copiedSpace->pin(CopiedSpace::oversizeBlockFor(ptr));
return;
}
CopiedBlock* block = CopiedSpace::blockFor(ptr);
if (block->isPinned())
return;
block->reportLiveBytes(owner, bytes);
}
} // namespace JSC
#endif // SlotVisitorInlines_h