/platform/external/webkit/WebCore/bindings/js/GCController.cpp

https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 88 lines · 50 code · 14 blank · 24 comment · 2 complexity · feb18db4032be7d6808507daa10a493f MD5 · raw file

  1. /*
  2. * Copyright (C) 2007 Apple Inc. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. * 1. Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * 2. Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. *
  13. * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17. * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18. * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19. * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20. * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21. * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24. */
  25. #include "config.h"
  26. #include "GCController.h"
  27. #include "JSDOMWindow.h"
  28. #include <runtime/JSGlobalData.h>
  29. #include <runtime/JSLock.h>
  30. #include <runtime/Collector.h>
  31. #include <wtf/StdLibExtras.h>
  32. #if USE(PTHREADS)
  33. #include <pthread.h>
  34. #endif
  35. using namespace JSC;
  36. namespace WebCore {
  37. static void* collect(void*)
  38. {
  39. JSLock lock(SilenceAssertionsOnly);
  40. JSDOMWindow::commonJSGlobalData()->heap.collectAllGarbage();
  41. return 0;
  42. }
  43. GCController& gcController()
  44. {
  45. DEFINE_STATIC_LOCAL(GCController, staticGCController, ());
  46. return staticGCController;
  47. }
  48. GCController::GCController()
  49. : m_GCTimer(this, &GCController::gcTimerFired)
  50. {
  51. }
  52. void GCController::garbageCollectSoon()
  53. {
  54. if (!m_GCTimer.isActive())
  55. m_GCTimer.startOneShot(0.5);
  56. }
  57. void GCController::gcTimerFired(Timer<GCController>*)
  58. {
  59. collect(0);
  60. }
  61. void GCController::garbageCollectNow()
  62. {
  63. collect(0);
  64. }
  65. void GCController::garbageCollectOnAlternateThreadForDebugging(bool waitUntilDone)
  66. {
  67. #if USE(PTHREADS)
  68. pthread_t thread;
  69. pthread_create(&thread, NULL, collect, NULL);
  70. if (waitUntilDone)
  71. pthread_join(thread, NULL);
  72. #endif
  73. }
  74. } // namespace WebCore