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PTHREAD_COND_INIT(3) Library Functions Manual PTHREAD_COND_INIT(3)

create a condition variable

#include <pthread.h>
pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr);

The pthread_cond_init() function creates a new condition variable, with attributes specified with attr. If attr is NULL the default attributes are used.

If successful, the pthread_cond_init() function will return zero and put the new condition variable ID into cond, otherwise an error number will be returned to indicate the error.

pthread_cond_init() will fail if:
The value specified by attr is invalid.
The process cannot allocate enough memory to create another condition variable.
The system temporarily lacks the resources to create another condition variable.

pthread_cond_broadcast(3), pthread_cond_destroy(3), pthread_cond_signal(3), pthread_cond_timedwait(3), pthread_cond_wait(3)

pthread_cond_init() conforms to ISO/IEC 9945-1:1996 (“POSIX.1”).
June 5, 2013 OpenBSD-current