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authorLorry Tar Creator <lorry-tar-importer@lorry>2017-06-27 06:07:23 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2017-06-27 06:07:23 +0000
commit1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch)
tree46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/JavaScriptCore/heap/CopyVisitorInlines.h
parent32761a6cee1d0dee366b885b7b9c777e67885688 (diff)
downloadWebKitGtk-tarball-master.tar.gz
Diffstat (limited to 'Source/JavaScriptCore/heap/CopyVisitorInlines.h')
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diff --git a/Source/JavaScriptCore/heap/CopyVisitorInlines.h b/Source/JavaScriptCore/heap/CopyVisitorInlines.h
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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 CopyVisitorInlines_h
-#define CopyVisitorInlines_h
-
-#include "ClassInfo.h"
-#include "CopyVisitor.h"
-#include "GCThreadSharedData.h"
-#include "JSCell.h"
-#include "JSDestructibleObject.h"
-
-namespace JSC {
-
-inline void CopyVisitor::visitItem(CopyWorklistItem item)
-{
- if (item.token() == ButterflyCopyToken) {
- JSObject::copyBackingStore(item.cell(), *this, ButterflyCopyToken);
- return;
- }
-
- item.cell()->methodTable()->copyBackingStore(item.cell(), *this, item.token());
-}
-
-inline bool CopyVisitor::checkIfShouldCopy(void* oldPtr)
-{
- CopiedBlock* block = CopiedSpace::blockFor(oldPtr);
- if (block->isOversize() || block->isPinned())
- return false;
- return true;
-}
-
-inline void* CopyVisitor::allocateNewSpace(size_t bytes)
-{
- void* result = 0; // Compilers don't realize that this will be assigned.
- if (LIKELY(m_copiedAllocator.tryAllocateDuringCopying(bytes, &result)))
- return result;
-
- result = allocateNewSpaceSlow(bytes);
- ASSERT(result);
- return result;
-}
-
-inline void* CopyVisitor::allocateNewSpaceSlow(size_t bytes)
-{
- CopiedBlock* newBlock = 0;
- m_shared.m_copiedSpace->doneFillingBlock(m_copiedAllocator.resetCurrentBlock(), &newBlock);
- m_copiedAllocator.setCurrentBlock(newBlock);
-
- void* result = 0;
- CheckedBoolean didSucceed = m_copiedAllocator.tryAllocateDuringCopying(bytes, &result);
- ASSERT(didSucceed);
- return result;
-}
-
-inline void CopyVisitor::startCopying()
-{
- ASSERT(!m_copiedAllocator.isValid());
- CopiedBlock* block = 0;
- m_shared.m_copiedSpace->doneFillingBlock(m_copiedAllocator.resetCurrentBlock(), &block);
- m_copiedAllocator.setCurrentBlock(block);
-}
-
-inline void CopyVisitor::doneCopying()
-{
- if (!m_copiedAllocator.isValid())
- return;
-
- m_shared.m_copiedSpace->doneFillingBlock(m_copiedAllocator.resetCurrentBlock(), 0);
-}
-
-inline void CopyVisitor::didCopy(void* ptr, size_t bytes)
-{
- CopiedBlock* block = CopiedSpace::blockFor(ptr);
- ASSERT(!block->isOversize());
- ASSERT(!block->isPinned());
-
- block->didEvacuateBytes(bytes);
-}
-
-} // namespace JSC
-
-#endif // CopyVisitorInlines_h
-