JavaScriptCore-1218.tar.gz

[apple/javascriptcore.git] / heap / CopiedSpaceInlineMethods.h

diff --git a/heap/CopiedSpaceInlineMethods.h b/heap/CopiedSpaceInlineMethods.h
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--- a/heap/CopiedSpaceInlineMethods.h
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-/*
- * Copyright (C) 2011 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. 
- */
-
-#ifndef CopiedSpaceInlineMethods_h
-#define CopiedSpaceInlineMethods_h
-
-#include "CopiedBlock.h"
-#include "CopiedSpace.h"
-#include "Heap.h"
-#include "HeapBlock.h"
-#include "JSGlobalData.h"
-#include <wtf/CheckedBoolean.h>
-
-namespace JSC {
-
-inline bool CopiedSpace::contains(void* ptr, CopiedBlock*& result)
-{
-    CopiedBlock* block = blockFor(ptr);
-    result = block;
-    return !m_toSpaceFilter.ruleOut(reinterpret_cast<Bits>(block)) && m_toSpaceSet.contains(block);
-}
-
-inline void CopiedSpace::pin(CopiedBlock* block)
-{
-    block->m_isPinned = true;
-}
-
-inline void CopiedSpace::startedCopying()
-{
-    DoublyLinkedList<HeapBlock>* temp = m_fromSpace;
-    m_fromSpace = m_toSpace;
-    m_toSpace = temp;
-
-    m_toSpaceFilter.reset();
-    m_allocator.startedCopying();
-
-    ASSERT(!m_inCopyingPhase);
-    ASSERT(!m_numberOfLoanedBlocks);
-    m_inCopyingPhase = true;
-}
-
-inline void CopiedSpace::recycleBlock(CopiedBlock* block)
-{
-    m_heap->blockAllocator().deallocate(block);
-
-    {
-        MutexLocker locker(m_loanedBlocksLock);
-        ASSERT(m_numberOfLoanedBlocks > 0);
-        m_numberOfLoanedBlocks--;
-        if (!m_numberOfLoanedBlocks)
-            m_loanedBlocksCondition.signal();
-    }
-}
-
-inline CheckedBoolean CopiedSpace::borrowBlock(CopiedBlock** outBlock)
-{
-    CopiedBlock* block = 0;
-    if (!getFreshBlock(AllocationMustSucceed, &block)) {
-        *outBlock = 0;
-        return false;
-    }
-
-    ASSERT(m_inCopyingPhase);
-    MutexLocker locker(m_loanedBlocksLock);
-    m_numberOfLoanedBlocks++;
-
-    ASSERT(block->m_offset == block->payload());
-    *outBlock = block;
-    return true;
-}
-
-inline CheckedBoolean CopiedSpace::addNewBlock()
-{
-    CopiedBlock* block = 0;
-    if (!getFreshBlock(AllocationCanFail, &block))
-        return false;
-        
-    m_toSpace->push(block);
-    m_toSpaceFilter.add(reinterpret_cast<Bits>(block));
-    m_toSpaceSet.add(block);
-    m_allocator.resetCurrentBlock(block);
-    return true;
-}
-
-inline CheckedBoolean CopiedSpace::allocateNewBlock(CopiedBlock** outBlock)
-{
-    PageAllocationAligned allocation = PageAllocationAligned::allocate(HeapBlock::s_blockSize, HeapBlock::s_blockSize, OSAllocator::JSGCHeapPages);
-    if (!static_cast<bool>(allocation)) {
-        *outBlock = 0;
-        return false;
-    }
-
-    *outBlock = new (NotNull, allocation.base()) CopiedBlock(allocation);
-    return true;
-}
-
-inline bool CopiedSpace::fitsInBlock(CopiedBlock* block, size_t bytes)
-{
-    return static_cast<char*>(block->m_offset) + bytes < reinterpret_cast<char*>(block) + block->capacity() && static_cast<char*>(block->m_offset) + bytes > block->m_offset;
-}
-
-inline CheckedBoolean CopiedSpace::tryAllocate(size_t bytes, void** outPtr)
-{
-    ASSERT(!m_heap->globalData()->isInitializingObject());
-
-    if (isOversize(bytes) || !m_allocator.fitsInCurrentBlock(bytes))
-        return tryAllocateSlowCase(bytes, outPtr);
-    
-    *outPtr = m_allocator.allocate(bytes);
-    ASSERT(*outPtr);
-    return true;
-}
-
-inline void* CopiedSpace::allocateFromBlock(CopiedBlock* block, size_t bytes)
-{
-    ASSERT(fitsInBlock(block, bytes));
-    ASSERT(is8ByteAligned(block->m_offset));
-    
-    void* ptr = block->m_offset;
-    ASSERT(block->m_offset >= block->payload() && block->m_offset < reinterpret_cast<char*>(block) + block->capacity());
-    block->m_offset = static_cast<void*>((static_cast<char*>(ptr) + bytes));
-    ASSERT(block->m_offset >= block->payload() && block->m_offset < reinterpret_cast<char*>(block) + block->capacity());
-
-    ASSERT(is8ByteAligned(ptr));
-    return ptr;
-}
-
-inline bool CopiedSpace::isOversize(size_t bytes)
-{
-    return bytes > s_maxAllocationSize;
-}
-
-inline bool CopiedSpace::isPinned(void* ptr)
-{
-    return blockFor(ptr)->m_isPinned;
-}
-
-inline CopiedBlock* CopiedSpace::oversizeBlockFor(void* ptr)
-{
-    return reinterpret_cast<CopiedBlock*>(reinterpret_cast<size_t>(ptr) & WTF::pageMask());
-}
-
-inline CopiedBlock* CopiedSpace::blockFor(void* ptr)
-{
-    return reinterpret_cast<CopiedBlock*>(reinterpret_cast<size_t>(ptr) & s_blockMask);
-}
-
-} // namespace JSC
-
-#endif