weaks.c 5.3 KB

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  1. /* The weak pthread functions for Linux.
  2. Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Library General Public License as
  6. published by the Free Software Foundation; either version 2 of the
  7. License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Library General Public License for more details.
  12. You should have received a copy of the GNU Library General Public
  13. License along with the GNU C Library; see the file COPYING.LIB. If not,
  14. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  15. Boston, MA 02111-1307, USA. */
  16. #include <errno.h>
  17. #include <limits.h>
  18. #include <stdlib.h>
  19. static int __pthread_return_0 __P ((void));
  20. static int __pthread_return_1 __P ((void));
  21. static void __pthread_return_void __P ((void));
  22. /**********************************************************************/
  23. /* Weaks for application/library use.
  24. *
  25. * Verified by comparing to glibc's linuxthreads/forward.c and defined
  26. * only those that are in the glibc abi.
  27. * The commented aliases are ones that were previously defined in uClibc
  28. * and which I left in for documentation.
  29. */
  30. weak_alias (__pthread_return_0, pthread_attr_destroy)
  31. weak_alias (__pthread_return_0, pthread_attr_getdetachstate)
  32. weak_alias (__pthread_return_0, pthread_attr_getinheritsched)
  33. weak_alias (__pthread_return_0, pthread_attr_getschedparam)
  34. weak_alias (__pthread_return_0, pthread_attr_getschedpolicy)
  35. weak_alias (__pthread_return_0, pthread_attr_getscope)
  36. /* weak_alias (__pthread_return_0, pthread_attr_getstackaddr) */
  37. /* weak_alias (__pthread_return_0, pthread_attr_getstacksize) */
  38. weak_alias (__pthread_return_0, pthread_attr_init)
  39. weak_alias (__pthread_return_0, pthread_attr_setdetachstate)
  40. weak_alias (__pthread_return_0, pthread_attr_setinheritsched)
  41. weak_alias (__pthread_return_0, pthread_attr_setschedparam)
  42. weak_alias (__pthread_return_0, pthread_attr_setschedpolicy)
  43. weak_alias (__pthread_return_0, pthread_attr_setscope)
  44. /* weak_alias (__pthread_return_0, pthread_attr_setstackaddr) */
  45. /* weak_alias (__pthread_return_0, pthread_attr_setstacksize) */
  46. weak_alias (__pthread_return_0, pthread_cond_broadcast)
  47. weak_alias (__pthread_return_0, pthread_cond_destroy)
  48. weak_alias (__pthread_return_0, pthread_cond_init)
  49. weak_alias (__pthread_return_0, pthread_cond_signal)
  50. weak_alias (__pthread_return_0, pthread_cond_timedwait)
  51. weak_alias (__pthread_return_0, pthread_cond_wait)
  52. weak_alias (__pthread_return_0, pthread_condattr_destroy)
  53. weak_alias (__pthread_return_0, pthread_condattr_init)
  54. weak_alias (__pthread_return_0, pthread_getschedparam)
  55. /* weak_alias (__pthread_return_0, pthread_getcancelstate) */
  56. /* weak_alias (__pthread_return_0, pthread_getconcurrency) */
  57. /* weak_alias (__pthread_return_0, pthread_getschedparam) */
  58. weak_alias (__pthread_return_0, pthread_mutex_destroy)
  59. weak_alias (__pthread_return_0, pthread_mutex_init)
  60. weak_alias (__pthread_return_0, pthread_mutex_lock)
  61. /* weak_alias (__pthread_return_0, pthread_mutex_trylock) */
  62. weak_alias (__pthread_return_0, pthread_mutex_unlock)
  63. /* weak_alias (__pthread_return_0, pthread_mutexattr_destroy) */
  64. /* weak_alias (__pthread_return_0, pthread_mutexattr_gettype) */
  65. /* weak_alias (__pthread_return_0, pthread_mutexattr_init) */
  66. /* weak_alias (__pthread_return_0, pthread_mutexattr_settype) */
  67. /* weak_alias (__pthread_return_0, pthread_rwlock_destroy) */
  68. /* weak_alias (__pthread_return_0, pthread_rwlock_init) */
  69. /* weak_alias (__pthread_return_0, pthread_rwlock_rdlock) */
  70. /* weak_alias (__pthread_return_0, pthread_rwlock_tryrdlock) */
  71. /* weak_alias (__pthread_return_0, pthread_rwlock_trywrlock) */
  72. /* weak_alias (__pthread_return_0, pthread_rwlock_unlock) */
  73. /* weak_alias (__pthread_return_0, pthread_rwlock_wrlock) */
  74. /* weak_alias (__pthread_return_0, pthread_rwlockattr_destroy) */
  75. /* weak_alias (__pthread_return_0, pthread_rwlockattr_getpshared) */
  76. /* weak_alias (__pthread_return_0, pthread_rwlockattr_init) */
  77. /* weak_alias (__pthread_return_0, pthread_rwlockattr_setpshared) */
  78. weak_alias (__pthread_return_0, pthread_self)
  79. weak_alias (__pthread_return_0, pthread_setcancelstate)
  80. weak_alias (__pthread_return_0, pthread_setcanceltype)
  81. /* weak_alias (__pthread_return_0, pthread_setconcurrency) */
  82. weak_alias (__pthread_return_0, pthread_setschedparam)
  83. /* Those are pthread functions which return 1 if successful. */
  84. weak_alias (__pthread_return_1, pthread_equal)
  85. /* pthread_exit () is a special case. */
  86. void weak_function
  87. pthread_exit (void *retval)
  88. {
  89. exit (EXIT_SUCCESS);
  90. }
  91. /**********************************************************************/
  92. /* Weaks used internally by the C library. */
  93. weak_alias (__pthread_return_0, __pthread_mutex_init)
  94. weak_alias (__pthread_return_0, __pthread_mutex_lock)
  95. weak_alias (__pthread_return_0, __pthread_mutex_trylock)
  96. weak_alias (__pthread_return_0, __pthread_mutex_unlock)
  97. /**********************************************************************/
  98. static int
  99. __pthread_return_0 (void)
  100. {
  101. return 0;
  102. }
  103. static int
  104. __pthread_return_1 (void)
  105. {
  106. return 1;
  107. }
  108. static void
  109. __pthread_return_void (void)
  110. {
  111. }