PTHREAD_ATTR_GETSCOPE(3P) POSIX Programmer's Manual PTHREAD_ATTR_GETSCOPE(3P)
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond-
ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
pthread_attr_getscope, pthread_attr_setscope - get and set the contentionscope attribute (REALTIME THREADS)
int pthread_attr_getscope(const pthread_attr_t *restrict attr,
int *restrict contentionscope);
int pthread_attr_setscope(pthread_attr_t *attr, int contentionscope);
The pthread_attr_getscope() and pthread_attr_setscope() functions, respectively, shall get and set the contentionscope attribute in the
The contentionscope attribute may have the values PTHREAD_SCOPE_SYSTEM, signifying system scheduling contention scope, or
PTHREAD_SCOPE_PROCESS, signifying process scheduling contention scope. The symbols PTHREAD_SCOPE_SYSTEM and PTHREAD_SCOPE_PROCESS are
defined in the <pthread.h> header.
If successful, the pthread_attr_getscope() and pthread_attr_setscope() functions shall return zero; otherwise, an error number shall be
returned to indicate the error.
The pthread_attr_setscope() function may fail if:
EINVAL The value of contentionscope is not valid.
An attempt was made to set the attribute to an unsupported value.
These functions shall not return an error code of [EINTR].
The following sections are informative.
After these attributes have been set, a thread can be created with the specified attributes using pthread_create(). Using these routines
does not affect the current running thread.
pthread_attr_destroy(), pthread_attr_getinheritsched(), pthread_attr_getschedpolicy(), pthread_attr_getschedparam(), pthread_create(), the
Base Definitions volume of IEEE Std 1003.1-2001, <pthread.h>, <sched.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
/The Open Group 2003 PTHREAD_ATTR_GETSCOPE(3P)