Manual Pages  — PTHREAD_COND_SIGNAL

pthread_cond_signal – unblock a thread waiting for a condition variable

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO STANDARDS

POSIX Threads Library (libpthread, -lpthread)

#include <pthread.h>

int
pthread_cond_signal(pthread_cond_t *cond);

The pthread_cond_signal() function unblocks one thread waiting for the condition variable cond.

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

The pthread_cond_signal() function will fail if:

[EINVAL]
	The value specified by cond is invalid.

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