/* * 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 MachineThreads_h #define MachineThreads_h #include <wtf/Noncopyable.h> #include <wtf/ThreadSpecific.h> #include <wtf/ThreadingPrimitives.h> namespace JSC { class ConservativeRoots; class Heap; class MachineThreads { WTF_MAKE_NONCOPYABLE(MachineThreads); public: MachineThreads(Heap*); ~MachineThreads(); void gatherConservativeRoots(ConservativeRoots&, void* stackCurrent); #if PLATFORM(IOS) JS_EXPORT_PRIVATE void makeUsableFromMultipleThreads(); #else void makeUsableFromMultipleThreads(); #endif JS_EXPORT_PRIVATE void addCurrentThread(); // Only needs to be called by clients that can use the same heap from multiple threads. private: void gatherFromCurrentThread(ConservativeRoots&, void* stackCurrent); class Thread; static void removeThread(void*); void removeCurrentThread(); void gatherFromOtherThread(ConservativeRoots&, Thread*); Mutex m_registeredThreadsMutex; Thread* m_registeredThreads; WTF::ThreadSpecificKey m_threadSpecific; #if !ASSERT_DISABLED Heap* m_heap; #endif }; } // namespace JSC #endif // MachineThreads_h