centos man page for pthread_attr_setscope

PTHREAD_ATTR_GETSCOPE(3P)				     POSIX Programmer's Manual					 PTHREAD_ATTR_GETSCOPE(3P)

PROLOG
       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.

NAME
       pthread_attr_getscope, pthread_attr_setscope - get and set the contentionscope attribute (REALTIME THREADS)

SYNOPSIS
       #include <pthread.h>

       int pthread_attr_getscope(const pthread_attr_t *restrict attr,
	      int *restrict contentionscope);
       int pthread_attr_setscope(pthread_attr_t *attr, int contentionscope);

DESCRIPTION
       The pthread_attr_getscope() and pthread_attr_setscope() functions, respectively, shall get and set the  contentionscope	attribute  in  the
       attr object.

       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.

RETURN VALUE
       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.

ERRORS
       The pthread_attr_setscope() function may fail if:

       EINVAL The value of contentionscope is not valid.

       ENOTSUP
	      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.

EXAMPLES
       None.

APPLICATION USAGE
       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.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       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>

COPYRIGHT
       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 .

IEEE
/The Open Group						       2003						 PTHREAD_ATTR_GETSCOPE(3P)