spinlock_win32-inl.h 2.0 KB

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  1. // -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
  2. /* Copyright (c) 2009, Google Inc.
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are
  7. * met:
  8. *
  9. * * Redistributions of source code must retain the above copyright
  10. * notice, this list of conditions and the following disclaimer.
  11. * * Redistributions in binary form must reproduce the above
  12. * copyright notice, this list of conditions and the following disclaimer
  13. * in the documentation and/or other materials provided with the
  14. * distribution.
  15. * * Neither the name of Google Inc. nor the names of its
  16. * contributors may be used to endorse or promote products derived from
  17. * this software without specific prior written permission.
  18. *
  19. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30. *
  31. * ---
  32. * This file is a Win32-specific part of spinlock_internal.cc
  33. */
  34. #include <windows.h>
  35. namespace base {
  36. namespace internal {
  37. void SpinLockDelay(volatile Atomic32 *w, int32 value, int loop) {
  38. if (loop == 0) {
  39. } else if (loop == 1) {
  40. Sleep(0);
  41. } else {
  42. Sleep(base::internal::SuggestedDelayNS(loop) / 1000000);
  43. }
  44. }
  45. void SpinLockWake(volatile Atomic32 *w, bool all) {
  46. }
  47. } // namespace internal
  48. } // namespace base