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pthread.h.0p (12442B)

    

  1. '\" et
  2. .TH pthread.h "0P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual"
  3. .\"
  4. .SH PROLOG
  5. This manual page is part of the POSIX Programmer's Manual.
  6. The Linux implementation of this interface may differ (consult
  7. the corresponding Linux manual page for details of Linux behavior),
  8. or the interface may not be implemented on Linux.
  9. .\"
  10. .SH NAME
  11. pthread.h
  12. \(em threads
  13. .SH SYNOPSIS
  14. .LP
  15. .nf
  16. #include <pthread.h>
  17. .fi
  18. .SH DESCRIPTION
  19. The
  20. .IR <pthread.h> 
  21. header shall define the following symbolic constants:
  22. .P
  23. .nf
  24. PTHREAD_BARRIER_SERIAL_THREAD
  25. PTHREAD_CANCEL_ASYNCHRONOUS
  26. PTHREAD_CANCEL_ENABLE
  27. PTHREAD_CANCEL_DEFERRED
  28. PTHREAD_CANCEL_DISABLE
  29. PTHREAD_CANCELED
  30. PTHREAD_CREATE_DETACHED
  31. PTHREAD_CREATE_JOINABLE
  32. PTHREAD_EXPLICIT_SCHED
  33. PTHREAD_INHERIT_SCHED
  34. PTHREAD_MUTEX_DEFAULT
  35. PTHREAD_MUTEX_ERRORCHECK
  36. PTHREAD_MUTEX_NORMAL
  37. PTHREAD_MUTEX_RECURSIVE
  38. PTHREAD_MUTEX_ROBUST
  39. PTHREAD_MUTEX_STALLED
  40. PTHREAD_ONCE_INIT
  41. PTHREAD_PRIO_INHERIT
  42. PTHREAD_PRIO_NONE
  43. PTHREAD_PRIO_PROTECT
  44. PTHREAD_PROCESS_SHARED
  45. PTHREAD_PROCESS_PRIVATE
  46. PTHREAD_SCOPE_PROCESS
  47. PTHREAD_SCOPE_SYSTEM
  48. .fi
  49. .P
  50. The
  51. .IR <pthread.h> 
  52. header shall define the following compile-time constant
  53. expressions valid as initializers for the following types:
  54. .TS
  55. tab(!) center box;
  56. cB | cB
  57. l | lB.
  58. Name!Initializer for Type
  59. _
  60. PTHREAD_COND_INITIALIZER!pthread_cond_t
  61. PTHREAD_MUTEX_INITIALIZER!pthread_mutex_t
  62. PTHREAD_RWLOCK_INITIALIZER!pthread_rwlock_t
  63. .TE
  64. .P
  65. The
  66. .IR <pthread.h> 
  67. header shall define the
  68. .BR pthread_attr_t ,
  69. .BR pthread_barrier_t ,
  70. .BR pthread_barrierattr_t ,
  71. .BR pthread_cond_t ,
  72. .BR pthread_condattr_t ,
  73. .BR pthread_key_t ,
  74. .BR pthread_mutex_t ,
  75. .BR pthread_mutexattr_t ,
  76. .BR pthread_once_t ,
  77. .BR pthread_rwlock_t ,
  78. .BR pthread_rwlockattr_t ,
  79. .BR pthread_spinlock_t ,
  80. and
  81. .BR pthread_t
  82. types as described in
  83. .IR <sys/types.h> .
  84. .P
  85. The following shall be declared as functions and may also be defined
  86. as macros. Function prototypes shall be provided.
  87. .sp
  88. .RS 4
  89. .nf
  91. int   pthread_atfork(void (*)(void), void (*)(void),
  92.           void(*)(void));
  93. int   pthread_attr_destroy(pthread_attr_t *);
  94. int   pthread_attr_getdetachstate(const pthread_attr_t *, int *);
  95. int   pthread_attr_getguardsize(const pthread_attr_t *restrict,
  96.           size_t *restrict);
  97. int   pthread_attr_getinheritsched(const pthread_attr_t *restrict,
  98.           int *restrict);
  99. int   pthread_attr_getschedparam(const pthread_attr_t *restrict,
  100.           struct sched_param *restrict);
  101. int   pthread_attr_getschedpolicy(const pthread_attr_t *restrict,
  102.           int *restrict);
  103. int   pthread_attr_getscope(const pthread_attr_t *restrict,
  104.           int *restrict);
  105. int   pthread_attr_getstack(const pthread_attr_t *restrict,
  106.           void **restrict, size_t *restrict);
  107. int   pthread_attr_getstacksize(const pthread_attr_t *restrict,
  108.           size_t *restrict);
  109. int   pthread_attr_init(pthread_attr_t *);
  110. int   pthread_attr_setdetachstate(pthread_attr_t *, int);
  111. int   pthread_attr_setguardsize(pthread_attr_t *, size_t);
  112. int   pthread_attr_setinheritsched(pthread_attr_t *, int);
  113. int   pthread_attr_setschedparam(pthread_attr_t *restrict,
  114.           const struct sched_param *restrict);
  115. int   pthread_attr_setschedpolicy(pthread_attr_t *, int);
  116. int   pthread_attr_setscope(pthread_attr_t *, int);
  117. int   pthread_attr_setstack(pthread_attr_t *, void *, size_t);
  118. int   pthread_attr_setstacksize(pthread_attr_t *, size_t);
  119. int   pthread_barrier_destroy(pthread_barrier_t *);
  120. int   pthread_barrier_init(pthread_barrier_t *restrict,
  121.           const pthread_barrierattr_t *restrict, unsigned);
  122. int   pthread_barrier_wait(pthread_barrier_t *);
  123. int   pthread_barrierattr_destroy(pthread_barrierattr_t *);
  124. int   pthread_barrierattr_getpshared(
  125.           const pthread_barrierattr_t *restrict, int *restrict);
  126. int   pthread_barrierattr_init(pthread_barrierattr_t *);
  127. int   pthread_barrierattr_setpshared(pthread_barrierattr_t *, int);
  128. int   pthread_cancel(pthread_t);
  129. int   pthread_cond_broadcast(pthread_cond_t *);
  130. int   pthread_cond_destroy(pthread_cond_t *);
  131. int   pthread_cond_init(pthread_cond_t *restrict,
  132.           const pthread_condattr_t *restrict);
  133. int   pthread_cond_signal(pthread_cond_t *);
  134. int   pthread_cond_timedwait(pthread_cond_t *restrict,
  135.           pthread_mutex_t *restrict, const struct timespec *restrict);
  136. int   pthread_cond_wait(pthread_cond_t *restrict,
  137.           pthread_mutex_t *restrict);
  138. int   pthread_condattr_destroy(pthread_condattr_t *);
  139. int   pthread_condattr_getclock(const pthread_condattr_t *restrict,
  140.           clockid_t *restrict);
  141. int   pthread_condattr_getpshared(const pthread_condattr_t *restrict,
  142.           int *restrict);
  143. int   pthread_condattr_init(pthread_condattr_t *);
  144. int   pthread_condattr_setclock(pthread_condattr_t *, clockid_t);
  145. int   pthread_condattr_setpshared(pthread_condattr_t *, int);
  146. int   pthread_create(pthread_t *restrict, const pthread_attr_t *restrict,
  147.           void *(*)(void*), void *restrict);
  148. int   pthread_detach(pthread_t);
  149. int   pthread_equal(pthread_t, pthread_t);
  150. void  pthread_exit(void *);
  151. int   pthread_getconcurrency(void);
  152. int   pthread_getcpuclockid(pthread_t, clockid_t *);
  153. int   pthread_getschedparam(pthread_t, int *restrict,
  154.           struct sched_param *restrict);
  155. void *pthread_getspecific(pthread_key_t);
  156. int   pthread_join(pthread_t, void **);
  157. int   pthread_key_create(pthread_key_t *, void (*)(void*));
  158. int   pthread_key_delete(pthread_key_t);
  159. int   pthread_mutex_consistent(pthread_mutex_t *);
  160. int   pthread_mutex_destroy(pthread_mutex_t *);
  161. int   pthread_mutex_getprioceiling(const pthread_mutex_t *restrict,
  162.           int *restrict);
  163. int   pthread_mutex_init(pthread_mutex_t *restrict,
  164.           const pthread_mutexattr_t *restrict);
  165. int   pthread_mutex_lock(pthread_mutex_t *);
  166. int   pthread_mutex_setprioceiling(pthread_mutex_t *restrict, int,
  167.           int *restrict);
  168. int   pthread_mutex_timedlock(pthread_mutex_t *restrict,
  169.           const struct timespec *restrict);
  170. int   pthread_mutex_trylock(pthread_mutex_t *);
  171. int   pthread_mutex_unlock(pthread_mutex_t *);
  172. int   pthread_mutexattr_destroy(pthread_mutexattr_t *);
  173. int   pthread_mutexattr_getprioceiling(
  174.           const pthread_mutexattr_t *restrict, int *restrict);
  175. int   pthread_mutexattr_getprotocol(const pthread_mutexattr_t *restrict,
  176.           int *restrict);
  177. int   pthread_mutexattr_getpshared(const pthread_mutexattr_t *restrict,
  178.           int *restrict);
  179. int   pthread_mutexattr_getrobust(const pthread_mutexattr_t *restrict,
  180.           int *restrict);
  181. int   pthread_mutexattr_gettype(const pthread_mutexattr_t *restrict,
  182.           int *restrict);
  183. int   pthread_mutexattr_init(pthread_mutexattr_t *);
  184. int   pthread_mutexattr_setprioceiling(pthread_mutexattr_t *, int);
  185. int   pthread_mutexattr_setprotocol(pthread_mutexattr_t *, int);
  186. int   pthread_mutexattr_setpshared(pthread_mutexattr_t *, int);
  187. int   pthread_mutexattr_setrobust(pthread_mutexattr_t *, int);
  188. int   pthread_mutexattr_settype(pthread_mutexattr_t *, int);
  189. int   pthread_once(pthread_once_t *, void (*)(void));
  190. int   pthread_rwlock_destroy(pthread_rwlock_t *);
  191. int   pthread_rwlock_init(pthread_rwlock_t *restrict,
  192.           const pthread_rwlockattr_t *restrict);
  193. int   pthread_rwlock_rdlock(pthread_rwlock_t *);
  194. int   pthread_rwlock_timedrdlock(pthread_rwlock_t *restrict,
  195.           const struct timespec *restrict);
  196. int   pthread_rwlock_timedwrlock(pthread_rwlock_t *restrict,
  197.           const struct timespec *restrict);
  198. int   pthread_rwlock_tryrdlock(pthread_rwlock_t *);
  199. int   pthread_rwlock_trywrlock(pthread_rwlock_t *);
  200. int   pthread_rwlock_unlock(pthread_rwlock_t *);
  201. int   pthread_rwlock_wrlock(pthread_rwlock_t *);
  202. int   pthread_rwlockattr_destroy(pthread_rwlockattr_t *);
  203. int   pthread_rwlockattr_getpshared(
  204.           const pthread_rwlockattr_t *restrict, int *restrict);
  205. int   pthread_rwlockattr_init(pthread_rwlockattr_t *);
  206. int   pthread_rwlockattr_setpshared(pthread_rwlockattr_t *, int);
  207. pthread_t
  208.       pthread_self(void);
  209. int   pthread_setcancelstate(int, int *);
  210. int   pthread_setcanceltype(int, int *);
  211. int   pthread_setconcurrency(int);
  212. int   pthread_setschedparam(pthread_t, int,
  213.           const struct sched_param *);
  214. int   pthread_setschedprio(pthread_t, int);
  215. int   pthread_setspecific(pthread_key_t, const void *);
  216. int   pthread_spin_destroy(pthread_spinlock_t *);
  217. int   pthread_spin_init(pthread_spinlock_t *, int);
  218. int   pthread_spin_lock(pthread_spinlock_t *);
  219. int   pthread_spin_trylock(pthread_spinlock_t *);
  220. int   pthread_spin_unlock(pthread_spinlock_t *);
  221. void  pthread_testcancel(void);
  222. .fi
  223. .P
  224. .RE
  225. .P
  226. The following may be declared as functions, or defined as macros, or both.
  227. If functions are declared, function prototypes shall be provided.
  228. .sp
  229. .RS
  230. \fIpthread_cleanup_pop\fR()
  231. \fIpthread_cleanup_push\fR()
  232. .RE
  233. .P
  234. Inclusion of the
  235. .IR <pthread.h> 
  236. header shall make symbols defined in the headers
  237. .IR <sched.h> 
  238. and
  239. .IR <time.h> 
  240. visible.
  241. .LP
  242. .IR "The following sections are informative."
  243. .SH "APPLICATION USAGE"
  244. None.
  245. .SH RATIONALE
  246. None.
  247. .SH "FUTURE DIRECTIONS"
  248. None.
  249. .SH "SEE ALSO"
  250. .IR "\fB<sched.h>\fP",
  251. .IR "\fB<sys_types.h>\fP",
  252. .IR "\fB<time.h>\fP"
  253. .P
  254. .ad l
  255. The System Interfaces volume of POSIX.1\(hy2017,
  256. .IR "\fIpthread_atfork\fR\^(\|)",
  257. .IR "\fIpthread_attr_destroy\fR\^(\|)",
  258. .IR "\fIpthread_attr_getdetachstate\fR\^(\|)",
  259. .IR "\fIpthread_attr_getguardsize\fR\^(\|)",
  260. .IR "\fIpthread_attr_getinheritsched\fR\^(\|)",
  261. .IR "\fIpthread_attr_getschedparam\fR\^(\|)",
  262. .IR "\fIpthread_attr_getschedpolicy\fR\^(\|)",
  263. .IR "\fIpthread_attr_getscope\fR\^(\|)",
  264. .IR "\fIpthread_attr_getstack\fR\^(\|)",
  265. .IR "\fIpthread_attr_getstacksize\fR\^(\|)",
  266. .IR "\fIpthread_barrier_destroy\fR\^(\|)",
  267. .IR "\fIpthread_barrier_wait\fR\^(\|)",
  268. .IR "\fIpthread_barrierattr_destroy\fR\^(\|)",
  269. .IR "\fIpthread_barrierattr_getpshared\fR\^(\|)",
  270. .IR "\fIpthread_cancel\fR\^(\|)",
  271. .IR "\fIpthread_cleanup_pop\fR\^(\|)",
  272. .IR "\fIpthread_cond_broadcast\fR\^(\|)",
  273. .IR "\fIpthread_cond_destroy\fR\^(\|)",
  274. .IR "\fIpthread_cond_timedwait\fR\^(\|)",
  275. .IR "\fIpthread_condattr_destroy\fR\^(\|)",
  276. .IR "\fIpthread_condattr_getclock\fR\^(\|)",
  277. .IR "\fIpthread_condattr_getpshared\fR\^(\|)",
  278. .IR "\fIpthread_create\fR\^(\|)",
  279. .IR "\fIpthread_detach\fR\^(\|)",
  280. .IR "\fIpthread_equal\fR\^(\|)",
  281. .IR "\fIpthread_exit\fR\^(\|)",
  282. .IR "\fIpthread_getconcurrency\fR\^(\|)",
  283. .IR "\fIpthread_getcpuclockid\fR\^(\|)",
  284. .IR "\fIpthread_getschedparam\fR\^(\|)",
  285. .IR "\fIpthread_getspecific\fR\^(\|)",
  286. .IR "\fIpthread_join\fR\^(\|)",
  287. .IR "\fIpthread_key_create\fR\^(\|)",
  288. .IR "\fIpthread_key_delete\fR\^(\|)",
  289. .IR "\fIpthread_mutex_consistent\fR\^(\|)",
  290. .IR "\fIpthread_mutex_destroy\fR\^(\|)",
  291. .IR "\fIpthread_mutex_getprioceiling\fR\^(\|)",
  292. .IR "\fIpthread_mutex_lock\fR\^(\|)",
  293. .IR "\fIpthread_mutex_timedlock\fR\^(\|)",
  294. .IR "\fIpthread_mutexattr_destroy\fR\^(\|)",
  295. .IR "\fIpthread_mutexattr_getprioceiling\fR\^(\|)",
  296. .IR "\fIpthread_mutexattr_getprotocol\fR\^(\|)",
  297. .IR "\fIpthread_mutexattr_getpshared\fR\^(\|)",
  298. .IR "\fIpthread_mutexattr_getrobust\fR\^(\|)",
  299. .IR "\fIpthread_mutexattr_gettype\fR\^(\|)",
  300. .IR "\fIpthread_once\fR\^(\|)",
  301. .IR "\fIpthread_rwlock_destroy\fR\^(\|)",
  302. .IR "\fIpthread_rwlock_rdlock\fR\^(\|)",
  303. .IR "\fIpthread_rwlock_timedrdlock\fR\^(\|)",
  304. .IR "\fIpthread_rwlock_timedwrlock\fR\^(\|)",
  305. .IR "\fIpthread_rwlock_trywrlock\fR\^(\|)",
  306. .IR "\fIpthread_rwlock_unlock\fR\^(\|)",
  307. .IR "\fIpthread_rwlockattr_destroy\fR\^(\|)",
  308. .IR "\fIpthread_rwlockattr_getpshared\fR\^(\|)",
  309. .IR "\fIpthread_self\fR\^(\|)",
  310. .IR "\fIpthread_setcancelstate\fR\^(\|)",
  311. .IR "\fIpthread_setschedprio\fR\^(\|)",
  312. .IR "\fIpthread_spin_destroy\fR\^(\|)",
  313. .IR "\fIpthread_spin_lock\fR\^(\|)",
  314. .IR "\fIpthread_spin_unlock\fR\^(\|)"
  315. .ad b
  316. .\"
  317. .SH COPYRIGHT
  318. Portions of this text are reprinted and reproduced in electronic form
  319. from IEEE Std 1003.1-2017, Standard for Information Technology
  320. -- Portable Operating System Interface (POSIX), The Open Group Base
  321. Specifications Issue 7, 2018 Edition,
  322. Copyright (C) 2018 by the Institute of
  323. Electrical and Electronics Engineers, Inc and The Open Group.
  324. In the event of any discrepancy between this version and the original IEEE and
  325. The Open Group Standard, the original IEEE and The Open Group Standard
  326. is the referee document. The original Standard can be obtained online at
  327. http://www.opengroup.org/unix/online.html .
  328. .PP
  329. Any typographical or formatting errors that appear
  330. in this page are most likely
  331. to have been introduced during the conversion of the source files to
  332. man page format. To report such errors, see
  333. https://www.kernel.org/doc/man-pages/reporting_bugs.html .