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Diffstat (limited to 'Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.h')
-rw-r--r-- | Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.h b/Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.h new file mode 100644 index 000000000..827e816ee --- /dev/null +++ b/Source/JavaScriptCore/bytecode/StructureStubClearingWatchpoint.h @@ -0,0 +1,109 @@ +/* + * 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. ``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 StructureStubClearingWatchpoint_h +#define StructureStubClearingWatchpoint_h + +#include "Watchpoint.h" +#include <wtf/Platform.h> + +#if ENABLE(JIT) + +#include <wtf/FastAllocBase.h> +#include <wtf/Noncopyable.h> +#include <wtf/OwnPtr.h> +#include <wtf/PassOwnPtr.h> +#include <wtf/RefCounted.h> +#include <wtf/RefPtr.h> + +namespace JSC { + +class CodeBlock; +class WatchpointsOnStructureStubInfo; +struct StructureStubInfo; + +class StructureStubClearingWatchpoint : public Watchpoint { + WTF_MAKE_NONCOPYABLE(StructureStubClearingWatchpoint); + WTF_MAKE_FAST_ALLOCATED; +public: + StructureStubClearingWatchpoint( + WatchpointsOnStructureStubInfo& holder) + : m_holder(holder) + { + } + + StructureStubClearingWatchpoint( + WatchpointsOnStructureStubInfo& holder, + PassOwnPtr<StructureStubClearingWatchpoint> next) + : m_holder(holder) + , m_next(next) + { + } + + virtual ~StructureStubClearingWatchpoint(); + + static StructureStubClearingWatchpoint* push( + WatchpointsOnStructureStubInfo& holder, + OwnPtr<StructureStubClearingWatchpoint>& head); + +protected: + void fireInternal(); + +private: + WatchpointsOnStructureStubInfo& m_holder; + OwnPtr<StructureStubClearingWatchpoint> m_next; +}; + +class WatchpointsOnStructureStubInfo : public RefCounted<WatchpointsOnStructureStubInfo> { +public: + WatchpointsOnStructureStubInfo(CodeBlock* codeBlock, StructureStubInfo* stubInfo) + : m_codeBlock(codeBlock) + , m_stubInfo(stubInfo) + { + } + + ~WatchpointsOnStructureStubInfo(); + + StructureStubClearingWatchpoint* addWatchpoint(); + + static StructureStubClearingWatchpoint* ensureReferenceAndAddWatchpoint( + RefPtr<WatchpointsOnStructureStubInfo>& holderRef, + CodeBlock*, StructureStubInfo*); + + CodeBlock* codeBlock() const { return m_codeBlock; } + StructureStubInfo* stubInfo() const { return m_stubInfo; } + +private: + CodeBlock* m_codeBlock; + StructureStubInfo* m_stubInfo; + OwnPtr<StructureStubClearingWatchpoint> m_head; +}; + +} // namespace JSC + +#endif // ENABLE(JIT) + +#endif // StructureStubClearingWatchpoint_h + |