tis_mutex_trylock - Attempts to lock the specified mutex
pthread_mutex_t *mutex );
Standard C Library (libc.so, libc.a)
Address of the mutex (passed by reference) to be locked.
This routine attempts to lock the specified mutex mutex.
When this routine is called, an attempt is made immediately
to lock the mutex. If the mutex is successfully
locked, zero (0) is returned.
If the specified mutex is already locked when this routine
is called, the caller does not wait for the mutex to
become available. [EBUSY] is returned, and the thread does
not wait to acquire the lock.
If an error condition occurs, this routine returns an
integer value indicating the type of error. Possible
return values are as follows: Successful completion. The
mutex is already locked; therefore, it was not acquired.
The value specified by mutex is invalid.
Functions: tis_mutex_destroy(3), tis_mutex_init(3),
Manuals: Guide to DECthreads and Programmer's Guide
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