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0 Command: tis_mutex_lock | Section: 3 | Source: Digital UNIX | File: tis_mutex_lock.3.gz
tis_mutex_lock(3) Library Functions Manual tis_mutex_lock(3) NAME tis_mutex_lock - Locks an unlocked mutex. LIBRARY Standard C Library (libc.so, libc.a) SYNOPSIS #include <tis.h> int tis_mutex_lock( pthread_mutex_t *mutex); STANDARDS None PARAMETERS Address of the mutex (passed by reference) to be locked. DESCRIPTION This routine locks the specified mutex mutex. A deadlock can result if the current owner of a mutex calls this routine in an attempt to lock the same mutex a second time. (DECthreads does not detect or report the deadlock.) In a threaded environment, the thread that has locked a mutex becomes its current owner and remains the owner until the same thread has un- locked it. This routine returns with the mutex in the locked state and with the current thread as the mutex's current owner. RETURN VALUES If an error condition occurs, this routine returns an integer value in- dicating the type of error. Possible return values are as follows: Successful completion. The value specified by mutex is invalid. A deadlock condition is detected. ERRORS None RELATED INFORMATION Functions: tis_mutex_destroy(3), tis_mutex_init(3), tis_mutex_try- lock(3), tis_mutex_unlock(3) Manuals: Guide to DECthreads and Programmer's Guide delim off tis_mutex_lock(3)

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