1 /* 2 * Copyright (C) 1999-2000 Harri Porten (porten (at) kde.org) 3 * Copyright (C) 2001 Peter Kelly (pmk (at) post.com) 4 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 * 20 */ 21 22 #ifndef MachineThreads_h 23 #define MachineThreads_h 24 25 #include <wtf/Noncopyable.h> 26 #include <wtf/ThreadingPrimitives.h> 27 28 #if ENABLE(JSC_MULTIPLE_THREADS) 29 #include <pthread.h> 30 #endif 31 32 namespace JSC { 33 34 class Heap; 35 class ConservativeRoots; 36 37 class MachineThreads { 38 WTF_MAKE_NONCOPYABLE(MachineThreads); 39 public: 40 MachineThreads(Heap*); 41 ~MachineThreads(); 42 43 void gatherConservativeRoots(ConservativeRoots&, void* stackCurrent); 44 45 #if ENABLE(JSC_MULTIPLE_THREADS) 46 void makeUsableFromMultipleThreads(); 47 void addCurrentThread(); // Only needs to be called by clients that can use the same heap from multiple threads. 48 #endif 49 50 private: 51 void gatherFromCurrentThread(ConservativeRoots&, void* stackCurrent); 52 53 #if ENABLE(JSC_MULTIPLE_THREADS) 54 class Thread; 55 56 static void removeThread(void*); 57 void removeCurrentThread(); 58 59 void gatherFromOtherThread(ConservativeRoots&, Thread*); 60 #endif 61 62 Heap* m_heap; 63 64 #if ENABLE(JSC_MULTIPLE_THREADS) 65 Mutex m_registeredThreadsMutex; 66 Thread* m_registeredThreads; 67 pthread_key_t m_threadSpecific; 68 #endif 69 }; 70 71 } // namespace JSC 72 73 #endif // MachineThreads_h 74
