NAME

pthread_mutex_destroy − Destroys a mutex. 

LIBRARY

DECthreads POSIX 1003.1c Library (libpthread.so)

SYNOPSIS

#include <pthread.h>

int   pthread_mutex_destroy(
                       pthread_mutex_t   ∗mutex);

STANDARDS

Interfaces documented on this reference page conform to industry standards as follows:

IEEE Std 1003.1c-1995, POSIX System Application Program Interface

PARAMETERS

mutexThe mutex to be destroyed. 

DESCRIPTION

This routine destroys the specified mutex by uninitializing it, and should be called when a mutex object is no longer referenced.  After this routine is called, DECthreads may reclaim internal storage used by the specified mutex. 

It is safe to destroy an initialized mutex that is unlocked.  However, it is illegal to destroy a locked mutex. 

The results of this routine are unpredictable if the mutex object specified in the mutex argument does not currently exist, or is not initialized. 

RETURN VALUES

If an error condition occurs, this routine returns an integer value indicating the type of error.  Possible return values are as follows:

0Successful completion. 

[EBUSY]An attempt was made to destroy the object referenced by mutex while it is locked or referenced. 

[EINVAL]The value specified for mutex is invalid. 

ERRORS

None

RELATED INFORMATION

Functions: pthread_mutex_init(3), pthread_mutex_lock(3), pthread_mutex_trylock(3), pthread_mutex_unlock(3)

Manuals: Guide to DECthreads and Programmer’s Guide