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Diffstat (limited to 'Source/JavaScriptCore/runtime/MachineStackMarker.h')
-rw-r--r-- | Source/JavaScriptCore/runtime/MachineStackMarker.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/runtime/MachineStackMarker.h b/Source/JavaScriptCore/runtime/MachineStackMarker.h new file mode 100644 index 0000000..e80fe05 --- /dev/null +++ b/Source/JavaScriptCore/runtime/MachineStackMarker.h @@ -0,0 +1,73 @@ +/* + * Copyright (C) 1999-2000 Harri Porten (porten@kde.org) + * Copyright (C) 2001 Peter Kelly (pmk@post.com) + * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#ifndef MachineStackMarker_h +#define MachineStackMarker_h + +#include <wtf/Noncopyable.h> +#include <wtf/ThreadingPrimitives.h> + +#if ENABLE(JSC_MULTIPLE_THREADS) +#include <pthread.h> +#endif + +namespace JSC { + + class Heap; + class MarkStack; + + class MachineStackMarker : public Noncopyable { + public: + MachineStackMarker(Heap*); + ~MachineStackMarker(); + + void markMachineStackConservatively(MarkStack&); + +#if ENABLE(JSC_MULTIPLE_THREADS) + void makeUsableFromMultipleThreads(); + void registerThread(); // Only needs to be called by clients that can use the same heap from multiple threads. +#endif + + private: + void markCurrentThreadConservatively(MarkStack&); + void markCurrentThreadConservativelyInternal(MarkStack&); + +#if ENABLE(JSC_MULTIPLE_THREADS) + class Thread; + + static void unregisterThread(void*); + + void unregisterThread(); + void markOtherThreadConservatively(MarkStack&, Thread*); +#endif + + Heap* m_heap; + +#if ENABLE(JSC_MULTIPLE_THREADS) + Mutex m_registeredThreadsMutex; + Thread* m_registeredThreads; + pthread_key_t m_currentThreadRegistrar; +#endif + }; + +} // namespace JSC + +#endif // MachineStackMarker_h |