Manual Pages  — PTHREAD_COND_WAIT

pthread_cond_wait – wait on a condition variable

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO STANDARDS

POSIX Threads Library (libpthread, -lpthread)

#include <pthread.h>

int
pthread_cond_wait(pthread_cond_t *restrict cond, pthread_mutex_t *restrict mutex);

If successful, the pthread_cond_wait() function will return zero. Otherwise an error number will be returned to indicate the error.

The pthread_cond_wait() function will fail if:

[EINVAL]
	The value specified by cond or the value specified by mutex is invalid.
[EPERM]
	The specified mutex was not locked by the calling thread.
[EOWNERDEAD]
	The argument mutex points to a robust mutex and the process containing the previous owning thread terminated while holding the mutex lock. The lock was granted to the caller and it is up to the new owner to make the state consistent.
[ENOTRECOVERABLE]
	The state protected by the mutex is not recoverable.

The pthread_cond_wait() function conforms to IEEE Std 1003.1-96 ("POSIX.1").