pthread_attr_setscope(3c) [sunos man page]

pthread_attr_getscope(3C)												 pthread_attr_getscope(3C)

NAME

       pthread_attr_getscope, pthread_attr_setscope - get or set contentionscope attribute

SYNOPSIS

       cc -mt [ flag... ] file... -lpthread [ library... ]
       #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);

       The pthread_attr_setscope() and pthread_attr_getscope() functions are used to set and get the contentionscope attribute in the attr object.

       The   contentionscope   attribute   can	 have	the   value  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 by the header <pthread.h>.

       If successful, the pthread_attr_setscope() and pthread_attr_getscope() functions return 0. Otherwise, an error number is returned to  indi-
       cate the error.

       The pthread_attr_setscope(), or pthread_attr_getscope(), function may fail if:

       EINVAL	       attr or contentionscope is invalid.

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.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

       pthread_attr_init(3C),  pthread_attr_setinheritsched(3C),  pthread_attr_setschedpolicy(3C),  pthread_attr_setschedparam(3C),   pthread_cre-
       ate(3C), pthread_setschedparam(3C), attributes(5), standards(5)

								    23 Mar 2005 					 pthread_attr_getscope(3C)

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)