1 .\" Copyright (c) 1997 Brian Cully <shmit@kublai.com>
2 .\" All rights reserved.
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28 .\" $FreeBSD: src/share/man/man3/pthread_cond_timedwait.3,v 1.21 2007/10/22 10:08:00 ru Exp $
29 .\" $DragonFly: src/lib/libc_r/man/pthread_cond_timedwait.3,v 1.2 2003/06/17 04:26:48 dillon Exp $
32 .Dt PTHREAD_COND_TIMEDWAIT 3
35 .Nm pthread_cond_timedwait
36 .Nd "wait on a condition variable for a specific amount of time"
42 .Fn pthread_cond_timedwait "pthread_cond_t *cond" "pthread_mutex_t *mutex" "const struct timespec *abstime"
45 .Fn pthread_cond_timedwait
46 function atomically blocks the current thread waiting on the condition
49 and releases the mutex specified by
51 The waiting thread unblocks only after another thread calls
52 .Xr pthread_cond_signal 3 ,
54 .Xr pthread_cond_broadcast 3
55 with the same condition variable, or if the system time reaches the
58 and the current thread reacquires the lock on
62 .Fn pthread_cond_timedwait
63 function will return zero.
64 Otherwise an error number will be returned to
68 .Fn pthread_cond_timedwait
69 function will fail if:
72 The value specified by
79 The system time has reached or exceeded the time specified in
84 .\"was not locked by the calling thread.
87 .Xr pthread_cond_broadcast 3 ,
88 .Xr pthread_cond_destroy 3 ,
89 .Xr pthread_cond_init 3 ,
90 .Xr pthread_cond_signal 3 ,
91 .Xr pthread_cond_wait 3
94 .Fn pthread_cond_timedwait