NAME

pthread_mutex_trylock — attempt to lock a mutex without blocking

LIBRARY

POSIX Threads Library (libpthread, -lpthread)

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”).