Reference: IVEShmInitMutex

Overview

Initializes a mutual exclusion lock usable by threads in different processes.

Prototype (C)

#include "ive_standards.h"
#include "ive_shm.h"
void IVEShmInitMutex(IVEShmMutex* p_mutex, int* p_status);

Prototype (Fortran)

There is no Fortran interface.

Parameters

p_mutex

p_mutex points to the mutex to be initialized. When the mutex is no longer needed, any resources associated with it may be freed by calling IVEShmDestroyMutex.

p_status

If the call fails, *p_status will be set to one of the values below; otherwise its value is not modified.

IVE_ERR_NO_MEM

There was insufficient memory available to complete the operation.

IVE_ERR_NO_RESOURCES

There was insufficient system resources available (other than memory) to complete the operation.

IVE_ERR_NO_PERMISSION

The caller does not have sufficient privileges to perform the operation.

IVE_ERR_IN_USE

p_mutex points to an already initialized mutex that has not yet been destroyed.

IVE_ERR_INTERNAL

An error internal to the library was detected. This is most likely because of a bug in the library.

IVE_ERR_UNRECOGNIZED

The operating system or system library returned an error code that was not expected.

Side effects

Inclusion of ive_standards.h sets certain feature-set macros. It is safest to include it before any other headers to avoid inconsistent definitions.

Cross references

IVEShmDestroyMutex, IVEShmAcquireMutex, IVEShmTryAcquireMutex, IVEShmReleaseMutex, and IVEShmMutex

| categories | alphabetical |

modified May 7, 2002