mojave man page for pthread_attr_setscope

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

NAME
     pthread_attr_getscope, pthread_attr_setscope -- thread attribute operations

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 controls
     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 scheduling 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