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Caution: This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

pthread_mutexattr_setpshared()

Set the process-shared attribute in mutex attribute object

Synopsis:

#include <pthread.h>

int pthread_mutexattr_setpshared( 
                         pthread_mutexattr_t* attr,
                         int pshared );

Arguments:

attr
A pointer to the pthread_mutexattr_t object that you want to set the attribute in.
pshared
The new value of the process-shared attribute; one of:

The default value of the process-shared attribute is PTHREAD_PROCESS_PRIVATE.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The pthread_mutexattr_setpshared() function sets the process-shared attribute in a mutex attribute object, attr, to the value given by pshared.

Returns:

EOK
Success.
EINVAL
Invalid mutex attribute object, attr.
EINVAL
The new value specified in pshared isn't PTHREAD_PROCESS_SHARED or PTHREAD_PROCESS_PRIVATE.

Classification:

POSIX 1003.1 THR TSH

Safety:
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes

See also:

pthread_cond_init(), pthread_create(), pthread_mutexattr_getpshared(), pthread_mutexattr_getrecursive(), pthread_mutex_init(), pthread_mutexattr_setrecursive()


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