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PTHREAD_MUTEX_TRYLOCK(3) BSD Library Functions Manual PTHREAD_MUTEX_TRYLOCK(3) 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 pthread_mutex_trylock() will fail if: [EBUSY] Mutex is already locked. [EINVAL] The value specified by mutex is invalid. SEE ALSO pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3), pthread_mutex_unlock(3) STANDARDS pthread_mutex_trylock() conforms to ISO/IEC 9945-1:1996 (``POSIX.1''). BSD July 30, 1998 BSD |