1 files changed, 0 insertions, 319 deletions
diff --git a/Source/JavaScriptCore/heap/Region.h b/Source/JavaScriptCore/heap/Region.h
deleted file mode 100644
index c638059b6..000000000
--- a/Source/JavaScriptCore/heap/Region.h
+++ /dev/null
@@ -1,319 +0,0 @@
-/*
- * Copyright (C) 2013 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 JSC_Region_h
-#define JSC_Region_h
-
-#include "HeapBlock.h"
-#include "SuperRegion.h"
-#include <wtf/DoublyLinkedList.h>
-#include <wtf/MetaAllocatorHandle.h>
-#include <wtf/PageAllocationAligned.h>
-
-#define HEAP_MEMORY_ID reinterpret_cast<void*>(static_cast<intptr_t>(-3))
-
-#define ENABLE_SUPER_REGION 0
-
-#ifndef ENABLE_SUPER_REGION
-#if USE(JSVALUE64) && !CPU(ARM64)
-#define ENABLE_SUPER_REGION 1
-#else
-#define ENABLE_SUPER_REGION 0
-#endif
-#endif
-
-namespace JSC {
-
-class DeadBlock : public HeapBlock<DeadBlock> {
-public:
-    DeadBlock(Region*);
-};
-
-inline DeadBlock::DeadBlock(Region* region)
-    : HeapBlock<DeadBlock>(region)
-{
-}
-
-class Region : public DoublyLinkedListNode<Region> {
-    friend CLASS_IF_GCC DoublyLinkedListNode<Region>;
-    friend class BlockAllocator;
-public:
-    ~Region();
-    static Region* create(SuperRegion*, size_t blockSize);
-    static Region* createCustomSize(SuperRegion*, size_t blockSize, size_t blockAlignment);
-    Region* reset(size_t blockSize);
-    void destroy();
-
-    size_t blockSize() const { return m_blockSize; }
-    bool isFull() const { return m_blocksInUse == m_totalBlocks; }
-    bool isEmpty() const { return !m_blocksInUse; }
-    bool isCustomSize() const { return m_isCustomSize; }
-
-    DeadBlock* allocate();
-    void deallocate(void*);
-
-    static const size_t s_regionSize = 64 * KB;
-    static const size_t s_regionMask = ~(s_regionSize - 1);
-
-protected:
-    Region(size_t blockSize, size_t totalBlocks, bool isExcess);
-    void initializeBlockList();
-
-    bool m_isExcess;
-
-private:
-    void* base();
-    size_t size();
-
-    size_t m_totalBlocks;
-    size_t m_blocksInUse;
-    size_t m_blockSize;
-    bool m_isCustomSize;
-    Region* m_prev;
-    Region* m_next;
-    DoublyLinkedList<DeadBlock> m_deadBlocks;
-};
-
-
-class NormalRegion : public Region {
-    friend class Region;
-private:
-    NormalRegion(PassRefPtr<WTF::MetaAllocatorHandle>, size_t blockSize, size_t totalBlocks);
-
-    static NormalRegion* tryCreate(SuperRegion*, size_t blockSize);
-    static NormalRegion* tryCreateCustomSize(SuperRegion*, size_t blockSize, size_t blockAlignment);
-
-    void* base() { return m_allocation->start(); }
-    size_t size() { return m_allocation->sizeInBytes(); }
-
-    NormalRegion* reset(size_t blockSize);
-
-    RefPtr<WTF::MetaAllocatorHandle> m_allocation;
-};
-
-class ExcessRegion : public Region {
-    friend class Region;
-private:
-    ExcessRegion(PageAllocationAligned&, size_t blockSize, size_t totalBlocks);
-
-    ~ExcessRegion();
-
-    static ExcessRegion* create(size_t blockSize);
-    static ExcessRegion* createCustomSize(size_t blockSize, size_t blockAlignment);
-
-    void* base() { return m_allocation.base(); }
-    size_t size() { return m_allocation.size(); }
-
-    ExcessRegion* reset(size_t blockSize);
-
-    PageAllocationAligned m_allocation;
-};
-
-inline NormalRegion::NormalRegion(PassRefPtr<WTF::MetaAllocatorHandle> allocation, size_t blockSize, size_t totalBlocks)
-    : Region(blockSize, totalBlocks, false)
-    , m_allocation(allocation)
-{
-    initializeBlockList();
-}
-
-inline NormalRegion* NormalRegion::tryCreate(SuperRegion* superRegion, size_t blockSize)
-{
-    RefPtr<WTF::MetaAllocatorHandle> allocation = superRegion->allocate(s_regionSize, HEAP_MEMORY_ID);
-    if (!allocation)
-        return 0;
-    return new NormalRegion(allocation, blockSize, s_regionSize / blockSize);
-}
-
-inline NormalRegion* NormalRegion::tryCreateCustomSize(SuperRegion* superRegion, size_t blockSize, size_t blockAlignment)
-{
-    ASSERT_UNUSED(blockAlignment, blockAlignment <= s_regionSize);
-    RefPtr<WTF::MetaAllocatorHandle> allocation = superRegion->allocate(blockSize, HEAP_MEMORY_ID);
-    if (!allocation)
-        return 0;
-    return new NormalRegion(allocation, blockSize, 1);
-}
-
-inline NormalRegion* NormalRegion::reset(size_t blockSize)
-{
-    ASSERT(!m_isExcess);
-    RefPtr<WTF::MetaAllocatorHandle> allocation = m_allocation.release();
-    return new (NotNull, this) NormalRegion(allocation.release(), blockSize, s_regionSize / blockSize);
-}
-
-inline ExcessRegion::ExcessRegion(PageAllocationAligned& allocation, size_t blockSize, size_t totalBlocks)
-    : Region(blockSize, totalBlocks, true)
-    , m_allocation(allocation)
-{
-    initializeBlockList();
-}
-
-inline ExcessRegion::~ExcessRegion()
-{
-    m_allocation.deallocate();
-}
-
-inline ExcessRegion* ExcessRegion::create(size_t blockSize)
-{
-    PageAllocationAligned allocation = PageAllocationAligned::allocate(s_regionSize, s_regionSize, OSAllocator::JSGCHeapPages);
-    ASSERT(static_cast<bool>(allocation));
-    return new ExcessRegion(allocation, blockSize, s_regionSize / blockSize); 
-}
-
-inline ExcessRegion* ExcessRegion::createCustomSize(size_t blockSize, size_t blockAlignment)
-{
-    PageAllocationAligned allocation = PageAllocationAligned::allocate(blockSize, blockAlignment, OSAllocator::JSGCHeapPages);
-    ASSERT(static_cast<bool>(allocation));
-    return new ExcessRegion(allocation, blockSize, 1);
-}
-
-inline ExcessRegion* ExcessRegion::reset(size_t blockSize)
-{
-    ASSERT(m_isExcess);
-    PageAllocationAligned allocation = m_allocation;
-    return new (NotNull, this) ExcessRegion(allocation, blockSize, s_regionSize / blockSize);
-}
-
-inline Region::Region(size_t blockSize, size_t totalBlocks, bool isExcess)
-    : DoublyLinkedListNode<Region>()
-    , m_isExcess(isExcess)
-    , m_totalBlocks(totalBlocks)
-    , m_blocksInUse(0)
-    , m_blockSize(blockSize)
-    , m_isCustomSize(false)
-    , m_prev(0)
-    , m_next(0)
-{
-}
-
-inline void Region::initializeBlockList()
-{
-    char* start = static_cast<char*>(base());
-    char* current = start;
-    for (size_t i = 0; i < m_totalBlocks; i++) {
-        ASSERT(current < start + size());
-        m_deadBlocks.append(new (NotNull, current) DeadBlock(this));
-        current += m_blockSize;
-    }
-}
-
-inline Region* Region::create(SuperRegion* superRegion, size_t blockSize)
-{
-#if ENABLE(SUPER_REGION)
-    ASSERT(blockSize <= s_regionSize);
-    ASSERT(!(s_regionSize % blockSize));
-    Region* region = NormalRegion::tryCreate(superRegion, blockSize);
-    if (LIKELY(!!region))
-        return region;
-#else
-    UNUSED_PARAM(superRegion);
-#endif
-    return ExcessRegion::create(blockSize);
-}
-
-inline Region* Region::createCustomSize(SuperRegion* superRegion, size_t blockSize, size_t blockAlignment)
-{
-#if ENABLE(SUPER_REGION)
-    Region* region = NormalRegion::tryCreateCustomSize(superRegion, blockSize, blockAlignment);
-    if (UNLIKELY(!region))
-        region = ExcessRegion::createCustomSize(blockSize, blockAlignment);
-#else
-    UNUSED_PARAM(superRegion);
-    Region* region = ExcessRegion::createCustomSize(blockSize, blockAlignment);
-#endif
-    region->m_isCustomSize = true;
-    return region;
-}
-
-inline Region::~Region()
-{
-    ASSERT(isEmpty());
-}
-
-inline void Region::destroy()
-{
-#if ENABLE(SUPER_REGION)
-    if (UNLIKELY(m_isExcess))
-        delete static_cast<ExcessRegion*>(this);
-    else
-        delete static_cast<NormalRegion*>(this);
-#else
-    delete static_cast<ExcessRegion*>(this);
-#endif
-}
-
-inline Region* Region::reset(size_t blockSize)
-{
-#if ENABLE(SUPER_REGION)
-    ASSERT(isEmpty());
-    if (UNLIKELY(m_isExcess))
-        return static_cast<ExcessRegion*>(this)->reset(blockSize);
-    return static_cast<NormalRegion*>(this)->reset(blockSize);
-#else
-    return static_cast<ExcessRegion*>(this)->reset(blockSize);
-#endif
-}
-
-inline DeadBlock* Region::allocate()
-{
-    ASSERT(!isFull());
-    m_blocksInUse++;
-    return m_deadBlocks.removeHead();
-}
-
-inline void Region::deallocate(void* base)
-{
-    ASSERT(base);
-    ASSERT(m_blocksInUse);
-    ASSERT(base >= this->base() && base < static_cast<char*>(this->base()) + size());
-    DeadBlock* block = new (NotNull, base) DeadBlock(this);
-    m_deadBlocks.push(block);
-    m_blocksInUse--;
-}
-
-inline void* Region::base()
-{
-#if ENABLE(SUPER_REGION)
-    if (UNLIKELY(m_isExcess))
-        return static_cast<ExcessRegion*>(this)->ExcessRegion::base();
-    return static_cast<NormalRegion*>(this)->NormalRegion::base();
-#else
-    return static_cast<ExcessRegion*>(this)->ExcessRegion::base();
-#endif
-}
-
-inline size_t Region::size()
-{
-#if ENABLE(SUPER_REGION)
-    if (UNLIKELY(m_isExcess))
-        return static_cast<ExcessRegion*>(this)->ExcessRegion::size();
-    return static_cast<NormalRegion*>(this)->NormalRegion::size();
-#else
-    return static_cast<ExcessRegion*>(this)->ExcessRegion::size();
-#endif
-}
-
-} // namespace JSC
-
-#endif // JSC_Region_h