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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
commit | 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch) | |
tree | 46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/JavaScriptCore/bytecode/VariableWatchpointSet.h | |
parent | 32761a6cee1d0dee366b885b7b9c777e67885688 (diff) | |
download | WebKitGtk-tarball-master.tar.gz |
webkitgtk-2.16.5HEADwebkitgtk-2.16.5master
Diffstat (limited to 'Source/JavaScriptCore/bytecode/VariableWatchpointSet.h')
-rw-r--r-- | Source/JavaScriptCore/bytecode/VariableWatchpointSet.h | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/Source/JavaScriptCore/bytecode/VariableWatchpointSet.h b/Source/JavaScriptCore/bytecode/VariableWatchpointSet.h deleted file mode 100644 index 4dec40495..000000000 --- a/Source/JavaScriptCore/bytecode/VariableWatchpointSet.h +++ /dev/null @@ -1,109 +0,0 @@ -/* - * Copyright (C) 2012, 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. ``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 VariableWatchpointSet_h -#define VariableWatchpointSet_h - -#include "Watchpoint.h" -#include "WriteBarrier.h" - -namespace JSC { - -class VariableWatchpointSet : public WatchpointSet { - friend class LLIntOffsetsExtractor; -public: - VariableWatchpointSet() - : WatchpointSet(ClearWatchpoint) - { - } - - ~VariableWatchpointSet() { } - - // For the purpose of deciding whether or not to watch this variable, you only need - // to inspect inferredValue(). If this returns something other than the empty - // value, then it means that at all future safepoints, this watchpoint set will be - // in one of these states: - // - // IsWatched: in this case, the variable's value must still be the - // inferredValue. - // - // IsInvalidated: in this case the variable's value may be anything but you'll - // either notice that it's invalidated and not install the watchpoint, or - // you will have been notified that the watchpoint was fired. - JSValue inferredValue() const { return m_inferredValue; } - - void notifyWrite(JSValue value) - { - ASSERT(!!value); - switch (state()) { - case ClearWatchpoint: - m_inferredValue = value; - startWatching(); - return; - - case IsWatched: - ASSERT(!!m_inferredValue); - if (value == m_inferredValue) - return; - invalidate(); - return; - - case IsInvalidated: - ASSERT(!m_inferredValue); - return; - } - - ASSERT_NOT_REACHED(); - } - - void invalidate() - { - m_inferredValue = JSValue(); - WatchpointSet::invalidate(); - } - - void finalizeUnconditionally() - { - ASSERT(!!m_inferredValue == (state() == IsWatched)); - if (!m_inferredValue) - return; - if (!m_inferredValue.isCell()) - return; - JSCell* cell = m_inferredValue.asCell(); - if (Heap::isMarked(cell)) - return; - invalidate(); - } - - JSValue* addressOfInferredValue() { return &m_inferredValue; } - -private: - JSValue m_inferredValue; -}; - -} // namespace JSC - -#endif // VariableWatchpointSet_h - |