pthread_rwlockattr_setpshared()

Set the process-shared attribute of a read-write lock attribute object

Synopsis:

#include <pthread.h>

int pthread_rwlockattr_setpshared(
       pthread_rwlockattr_t* attr,
       int pshared );

Arguments:

attr

A pointer to the pthread_rwlockattr_t object that you want to set the attribute for.

pshared

The new value of the process-shared attribute; one of:

• PTHREAD_PROCESS_SHARED — let any thread with access to the read-write lock object's memory operate it, even if those threads are in different processes.
• PTHREAD_PROCESS_PRIVATE — limit access to threads in the current process.

Library:

libc

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

Description:

The pthread_rwlockattr_setpshared() function sets the process-shared attribute for the read-write lock attribute object specified by attr to pshared.

Returns:

EOK

Success.

EINVAL

The pshared argument is invalid.

Classification:

POSIX 1003.1 THR TSH

See also:

pthread_rwlockattr_destroy(), pthread_rwlockattr_getpshared(), pthread_rwlockattr_init()

Processes and Threads chapter of Getting Started with QNX Neutrino