NAME

pthread_cond_signal - Wakes one thread that is waiting on a condition variable

SYNOPSIS

#include <pthread.h> int pthread_cond_signal( pthread_cond_t *cond);

PARAMETERS

condCondition variable signaled. 

DESCRIPTION

The pthread_cond_signal() routine wakes one thread waiting on a condition variable. Calling this routine implies that data guarded by the associated mutex has changed so that it is possible for a single waiting thread to proceed. Call this routine when any thread waiting on the specified condition variable might find its predicate true, but only one thread needs to proceed. The scheduling policy determines which thread is awakened. For policies SCHED_FIFO and SCHED_RR a blocked thread is chosen in priority order. Call this routine when the associated mutex is either locked or unlocked.

RETURN VALUES

If the function fails, errno may be set to one of the following values:

RELATED INFORMATION

Functions:  pthread_cond_broadcast(3), pthread_cond_destroy(3), pthread_cond_init(3), pthread_cond_timedwait(3), pthread_cond_wait(3). 

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