osf1 man page for tis_mutex_trylock

tis_mutex_trylock(3)					     Library Functions Manual					      tis_mutex_trylock(3)

NAME
       tis_mutex_trylock - Attempts to lock the specified mutex.

LIBRARY
       Standard C Library (libc.so, libc.a)

SYNOPSIS
       #include <tis.h>

       int   tis_mutex_trylock(
			      pthread_mutex_t	*mutex);

STANDARDS
       None

PARAMETERS
       Address of the mutex (passed by reference) to be locked.

DESCRIPTION
       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.

RETURN VALUES
       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.

ERRORS
       None

RELATED INFORMATION
       Functions: tis_mutex_destroy(3), tis_mutex_init(3), tis_mutex_lock(3), tis_mutex_unlock(3)

       Manuals: Guide to DECthreads and Programmer's Guide

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															      tis_mutex_trylock(3)