Move Source/WTF/wtf to Source/wtf

Source/WTF/wtf/ArrayBuffer.h

Index: Source/WTF/wtf/ArrayBuffer.h
diff --git a/Source/WTF/wtf/ArrayBuffer.h b/Source/WTF/wtf/ArrayBuffer.h
deleted file mode 100644
index 94190377f13a531f858e2449a3a9bba73d719204..0000000000000000000000000000000000000000
--- a/Source/WTF/wtf/ArrayBuffer.h
+++ /dev/null
@@ -1,272 +0,0 @@
-/*
- * Copyright (C) 2009 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 COMPUTER, 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 COMPUTER, 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 ArrayBuffer_h
-#define ArrayBuffer_h
-
-#include <wtf/HashSet.h>
-#include <wtf/PassRefPtr.h>
-#include <wtf/RefCounted.h>
-#include <wtf/Vector.h>
-
-namespace WTF {
-
-class ArrayBuffer;
-class ArrayBufferView;
-
-// The current implementation assumes that the instance of this class is a
-// singleton living for the entire process's lifetime.
-class ArrayBufferDeallocationObserver {
-public:
-    virtual void ArrayBufferDeallocated(unsigned sizeInBytes) = 0;
-};
-
-
-class ArrayBufferContents {
-    WTF_MAKE_NONCOPYABLE(ArrayBufferContents);
-public:
-    ArrayBufferContents() 
-        : m_data(0)
-        , m_sizeInBytes(0)
-        , m_deallocationObserver(0)
-    { }
-
-    inline ~ArrayBufferContents();
-
-    void* data() { return m_data; }
-    unsigned sizeInBytes() { return m_sizeInBytes; }
-
-private:
-    ArrayBufferContents(void* data, unsigned sizeInBytes) 
-        : m_data(data)
-        , m_sizeInBytes(sizeInBytes)
-        , m_deallocationObserver(0)
-    { }
-
-    friend class ArrayBuffer;
-
-    enum InitializationPolicy {
-        ZeroInitialize,
-        DontInitialize
-    };
-
-    static inline void tryAllocate(unsigned numElements, unsigned elementByteSize, InitializationPolicy, ArrayBufferContents&);
-    void transfer(ArrayBufferContents& other)
-    {
-        ASSERT(!other.m_data);
-        other.m_data = m_data;
-        other.m_sizeInBytes = m_sizeInBytes;
-        m_data = 0;
-        m_sizeInBytes = 0;
-        // Notify the current V8 isolate that the buffer is gone.
-        if (m_deallocationObserver)
-            m_deallocationObserver->ArrayBufferDeallocated(other.m_sizeInBytes);
-        ASSERT(!other.m_deallocationObserver);
-        m_deallocationObserver = 0;
-    }
-
-    void* m_data;
-    unsigned m_sizeInBytes;
-
-    ArrayBufferDeallocationObserver* m_deallocationObserver;
-};
-
-class ArrayBuffer : public RefCounted<ArrayBuffer> {
-public:
-    static inline PassRefPtr<ArrayBuffer> create(unsigned numElements, unsigned elementByteSize);
-    static inline PassRefPtr<ArrayBuffer> create(ArrayBuffer*);
-    static inline PassRefPtr<ArrayBuffer> create(const void* source, unsigned byteLength);
-    static inline PassRefPtr<ArrayBuffer> create(ArrayBufferContents&);
-
-    // Only for use by Uint8ClampedArray::createUninitialized.
-    static inline PassRefPtr<ArrayBuffer> createUninitialized(unsigned numElements, unsigned elementByteSize);
-
-    inline void* data();
-    inline const void* data() const;
-    inline unsigned byteLength() const;
-
-    inline PassRefPtr<ArrayBuffer> slice(int begin, int end) const;
-    inline PassRefPtr<ArrayBuffer> slice(int begin) const;
-
-    void addView(ArrayBufferView*);
-    void removeView(ArrayBufferView*);
-
-    WTF_EXPORT_PRIVATE bool transfer(ArrayBufferContents&, Vector<RefPtr<ArrayBufferView> >& neuteredViews);
-    bool isNeutered() { return !m_contents.m_data; }
-
-    void setDeallocationObserver(ArrayBufferDeallocationObserver* deallocationObserver)
-    {
-        m_contents.m_deallocationObserver = deallocationObserver;
-    }
-
-    ~ArrayBuffer() { }
-
-private:
-    static inline PassRefPtr<ArrayBuffer> create(unsigned numElements, unsigned elementByteSize, ArrayBufferContents::InitializationPolicy);
-
-    inline ArrayBuffer(ArrayBufferContents&);
-    inline PassRefPtr<ArrayBuffer> sliceImpl(unsigned begin, unsigned end) const;
-    inline unsigned clampIndex(int index) const;
-    static inline int clampValue(int x, int left, int right);
-
-    ArrayBufferContents m_contents;
-    ArrayBufferView* m_firstView;
-};
-
-int ArrayBuffer::clampValue(int x, int left, int right)
-{
-    ASSERT(left <= right);
-    if (x < left)
-        x = left;
-    if (right < x)
-        x = right;
-    return x;
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::create(unsigned numElements, unsigned elementByteSize)
-{
-    return create(numElements, elementByteSize, ArrayBufferContents::ZeroInitialize);
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::create(ArrayBuffer* other)
-{
-    return ArrayBuffer::create(other->data(), other->byteLength());
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::create(const void* source, unsigned byteLength)
-{
-    ArrayBufferContents contents;
-    ArrayBufferContents::tryAllocate(byteLength, 1, ArrayBufferContents::ZeroInitialize, contents);
-    if (!contents.m_data)
-        return 0;
-    RefPtr<ArrayBuffer> buffer = adoptRef(new ArrayBuffer(contents));
-    memcpy(buffer->data(), source, byteLength);
-    return buffer.release();
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::create(ArrayBufferContents& contents)
-{
-    return adoptRef(new ArrayBuffer(contents));
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::createUninitialized(unsigned numElements, unsigned elementByteSize)
-{
-    return create(numElements, elementByteSize, ArrayBufferContents::DontInitialize);
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::create(unsigned numElements, unsigned elementByteSize, ArrayBufferContents::InitializationPolicy policy)
-{
-    ArrayBufferContents contents;
-    ArrayBufferContents::tryAllocate(numElements, elementByteSize, policy, contents);
-    if (!contents.m_data)
-        return 0;
-    return adoptRef(new ArrayBuffer(contents));
-}
-
-ArrayBuffer::ArrayBuffer(ArrayBufferContents& contents)
-    : m_firstView(0)
-{
-    contents.transfer(m_contents);
-}
-
-void* ArrayBuffer::data()
-{
-    return m_contents.m_data;
-}
-
-const void* ArrayBuffer::data() const
-{
-    return m_contents.m_data;
-}
-
-unsigned ArrayBuffer::byteLength() const
-{
-    return m_contents.m_sizeInBytes;
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::slice(int begin, int end) const
-{
-    return sliceImpl(clampIndex(begin), clampIndex(end));
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::slice(int begin) const
-{
-    return sliceImpl(clampIndex(begin), byteLength());
-}
-
-PassRefPtr<ArrayBuffer> ArrayBuffer::sliceImpl(unsigned begin, unsigned end) const
-{
-    unsigned size = begin <= end ? end - begin : 0;
-    return ArrayBuffer::create(static_cast<const char*>(data()) + begin, size);
-}
-
-unsigned ArrayBuffer::clampIndex(int index) const
-{
-    unsigned currentLength = byteLength();
-    if (index < 0)
-        index = currentLength + index;
-    return clampValue(index, 0, currentLength);
-}
-
-void ArrayBufferContents::tryAllocate(unsigned numElements, unsigned elementByteSize, ArrayBufferContents::InitializationPolicy policy, ArrayBufferContents& result)
-{
-    // Do not allow 32-bit overflow of the total size.
-    // FIXME: Why not? The tryFastCalloc function already checks its arguments,
-    // and will fail if there is any overflow, so why should we include a
-    // redudant unnecessarily restrictive check here?
-    if (numElements) {
-        unsigned totalSize = numElements * elementByteSize;
-        if (totalSize / numElements != elementByteSize) {
-            result.m_data = 0;
-            return;
-        }
-    }
-    bool allocationSucceeded = false;
-    if (policy == ZeroInitialize)
-        allocationSucceeded = WTF::tryFastCalloc(numElements, elementByteSize).getValue(result.m_data);
-    else {
-        ASSERT(policy == DontInitialize);
-        allocationSucceeded = WTF::tryFastMalloc(numElements * elementByteSize).getValue(result.m_data);
-    }
-
-    if (allocationSucceeded) {
-        result.m_sizeInBytes = numElements * elementByteSize;
-        return;
-    }
-    result.m_data = 0;
-}
-
-ArrayBufferContents::~ArrayBufferContents()
-{
-    if (m_deallocationObserver)
-        m_deallocationObserver->ArrayBufferDeallocated(m_sizeInBytes);
-    WTF::fastFree(m_data);
-}
-
-} // namespace WTF
-
-using WTF::ArrayBuffer;
-
-#endif // ArrayBuffer_h