db_mutex.c 1.7 KB

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  1. /* -*- mode:c; c-file-style:"k&r"; c-basic-offset: 4; tab-width:4; indent-tabs-mode:nil; mode:auto-fill; fill-column:78; -*- */
  2. /* vim: set ts=4 sw=4 et tw=78 fo=cqt wm=0: */
  3. /* Copyright (C) 2014 Stony Brook University
  4. This file is part of Graphene Library OS.
  5. Graphene Library OS is free software: you can redistribute it and/or
  6. modify it under the terms of the GNU Lesser General Public License
  7. as published by the Free Software Foundation, either version 3 of the
  8. License, or (at your option) any later version.
  9. Graphene Library OS is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. GNU Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public License
  14. along with this program. If not, see <http://www.gnu.org/licenses/>. */
  15. /*
  16. * db_mutex.c
  17. *
  18. * This file contains APIs that provides operations of mutexes.
  19. */
  20. #include "pal_defs.h"
  21. #include "pal.h"
  22. #include "pal_internal.h"
  23. #include "pal_error.h"
  24. #include "api.h"
  25. PAL_HANDLE
  26. DkMutexCreate (PAL_NUM initialCount)
  27. {
  28. ENTER_PAL_CALL(DkMutexCreate);
  29. PAL_HANDLE handle = NULL;
  30. int ret = _DkMutexCreate(&handle, initialCount);
  31. if (ret < 0) {
  32. _DkRaiseFailure(-ret);
  33. handle = NULL;
  34. }
  35. TRACE_HEAP(handle);
  36. LEAVE_PAL_CALL_RETURN(handle);
  37. }
  38. void DkMutexRelease (PAL_HANDLE handle)
  39. {
  40. ENTER_PAL_CALL(DkMutexRelease);
  41. if (!handle ||
  42. !IS_HANDLE_TYPE(handle, mutex)) {
  43. _DkRaiseFailure(PAL_ERROR_INVAL);
  44. LEAVE_PAL_CALL();
  45. }
  46. _DkMutexRelease (handle);
  47. LEAVE_PAL_CALL();
  48. }