MachineStackMarker.h 2.1 KB

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  1. /*
  2. * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
  3. * Copyright (C) 2001 Peter Kelly (pmk@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. #ifndef MachineThreads_h
  22. #define MachineThreads_h
  23. #include <wtf/Noncopyable.h>
  24. #include <wtf/ThreadSpecific.h>
  25. #include <wtf/ThreadingPrimitives.h>
  26. namespace JSC {
  27. class ConservativeRoots;
  28. class Heap;
  29. class MachineThreads {
  30. WTF_MAKE_NONCOPYABLE(MachineThreads);
  31. public:
  32. MachineThreads(Heap*);
  33. ~MachineThreads();
  34. void gatherConservativeRoots(ConservativeRoots&, void* stackCurrent);
  35. void makeUsableFromMultipleThreads();
  36. JS_EXPORT_PRIVATE void addCurrentThread(); // Only needs to be called by clients that can use the same heap from multiple threads.
  37. private:
  38. void gatherFromCurrentThread(ConservativeRoots&, void* stackCurrent);
  39. class Thread;
  40. static void removeThread(void*);
  41. void removeCurrentThread();
  42. void gatherFromOtherThread(ConservativeRoots&, Thread*);
  43. Mutex m_registeredThreadsMutex;
  44. Thread* m_registeredThreads;
  45. WTF::ThreadSpecificKey m_threadSpecific;
  46. #if !ASSERT_DISABLED
  47. Heap* m_heap;
  48. #endif
  49. };
  50. } // namespace JSC
  51. #endif // MachineThreads_h