NAME
pthread_mutex_trylock – attempt to lock a mutex without blocking
SYNOPSIS
#include <pthread.h>
int
pthread_mutex_trylock(pthread_mutex_t *mutex);
DESCRIPTION
The pthread_mutex_trylock() function locks mutex. If the mutex is already locked, pthread_mutex_trylock() will not block waiting for the mutex, but will return an error condition.
RETURN VALUES
If successful, pthread_mutex_trylock() will return zero, otherwise an error number will be returned to indicate the error.
ERRORS
The pthread_mutex_trylock() function will fail if:
- [EINVAL]
-
The value specified by mutex is invalid.
- [EBUSY]
-
Mutex is already locked.
SEE ALSO
pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3), pthread_mutex_unlock(3)
STANDARDS
The pthread_mutex_trylock() function conforms to ISO/IEC 9945-1:1996 (“POSIX.1”).