pthread_attr_set_getscope man page on Darwin

pthread_attr_set_getscope man page on Darwin

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PTHREAD_ATTR(3)		 BSD Library Functions Manual	       PTHREAD_ATTR(3)

NAME
     pthread_attr_getscope, pthread_attr_setscope — thread attribute opera‐
     tions

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
     Thread attributes are used to specify parameters to pthread_create().
     One attribute object can be used in multiple calls to pthread_create(),
     with or without modifications between calls.

     The pthread_attr_setscope() and pthread_attr_getscope() functions,
     respectively, set and get the attribute within attr argument that con‐
     trols the contention scope of the thread.	The acceptable values are
     PTHREAD_SCOPE_SYSTEM, indicating a scheduling contention scope that is
     system-wide, and PTHREAD_SCOPE_PROCESS, which indicates a process sched‐
     uling contention scope.  Currently on Mac OS X we only support
     PTHREAD_SCOPE_SYSTEM.

RETURN VALUES
     If successful, these functions return 0.  Otherwise, an error number is
     returned to indicate the error.

ERRORS
     pthread_attr_getscope() will fail if:

     [EINVAL]		Invalid value for attr.

     pthread_attr_setscope() will fail if:

     [EINVAL]		Invalid value for attr.

     [ENOTSUP]		Invalid or unsupported value for contentionscope.

SEE ALSO
     pthread_create(3), pthread_attr_init(3), pthread_attr_setinheritsched(3),
     pthread_attr_setschedpolicy(3), pthread_attr_setschedparam(3)

STANDARDS
     pthread_attr_setscope(), pthread_attr_getscope() conform to Version 2 of
     the Single UNIX Specification (“SUSv2”)

BSD			       December 31, 2007			   BSD

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