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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/WriteBarrierBuffer.h
parent32761a6cee1d0dee366b885b7b9c777e67885688 (diff)
downloadWebKitGtk-tarball-master.tar.gz
Diffstat (limited to 'Source/JavaScriptCore/heap/WriteBarrierBuffer.h')
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diff --git a/Source/JavaScriptCore/heap/WriteBarrierBuffer.h b/Source/JavaScriptCore/heap/WriteBarrierBuffer.h
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-/*
- * 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 WriteBarrierBuffer_h
-#define WriteBarrierBuffer_h
-
-#include <wtf/FastMalloc.h>
-
-namespace JSC {
-
-class Heap;
-class JSCell;
-
-namespace FTL { class LowerDFGToLLVM; }
-
-class WriteBarrierBuffer {
- friend class FTL::LowerDFGToLLVM;
-public:
- WriteBarrierBuffer(unsigned capacity);
- ~WriteBarrierBuffer();
-
- void add(JSCell*);
- void flush(Heap&);
- void reset();
-
- static ptrdiff_t currentIndexOffset()
- {
- return OBJECT_OFFSETOF(WriteBarrierBuffer, m_currentIndex);
- }
-
- static ptrdiff_t capacityOffset()
- {
- return OBJECT_OFFSETOF(WriteBarrierBuffer, m_capacity);
- }
-
- static ptrdiff_t bufferOffset()
- {
- return OBJECT_OFFSETOF(WriteBarrierBuffer, m_buffer);
- }
-
-private:
- unsigned m_currentIndex;
- unsigned m_capacity;
- JSCell** m_buffer;
-};
-
-} // namespace JSC
-
-#endif // WriteBarrierBuffer_h