pthread_attr_getschedpolicy(3) [mojave man page]

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

NAME

     pthread_attr_getschedpolicy, pthread_attr_setschedpolicy -- thread attribute operations

SYNOPSIS

     #include <pthread.h>

     int
     pthread_attr_getschedpolicy(const pthread_attr_t *restrict attr, int *restrict policy);

     int
     pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);

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 functions pthread_attr_setschedpolicy() and pthread_attr_getschedpolicy(), set and get the attribute in the attr argument related to the
     scheduling policy.  The value for the aforementioned attribute can be SCHED_FIFO, SCHED_RR and SCHED_OTHER.

RETURN VALUES

     If successful, these functions return 0.  Otherwise, an error number is returned to indicate the error.  pthread_attr_getschedpolicy(), on
     success, will copy the value of the thread's scheduling policy attribute to the location pointed to by the second function parameter.

ERRORS

     pthread_attr_getschedpolicy() will fail if:

     [EINVAL]		Invalid value for attr.

     pthread_attr_setschedpolicy() will fail if:

     [EINVAL]		Invalid value for attr.

     [ENOTSUP]		Invalid or unsupported value for policy.

SEE ALSO

     pthread_create(3), pthread_attr_init(3), pthread_attr_setschedparam(3), pthread_attr_setinheritsched(3)

STANDARDS

     pthread_attr_setschedpolicy(), pthread_attr_getschedpolicy() conform to Version 2 of the Single UNIX Specification (``SUSv2'')

BSD
								 December 31, 2007							       BSD

pthread_attr_getschedpolicy(3C) 										   pthread_attr_getschedpolicy(3C)

NAME

       pthread_attr_getschedpolicy, pthread_attr_setschedpolicy - get or set schedpolicy attribute

SYNOPSIS

       cc -mt [ flag... ] file... -lpthread [ library... ]
       #include <pthread.h>

       int pthread_attr_getschedpolicy(const pthread_attr_t *restrict attr, int *restrict policy);

       int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);

       The  functions  pthread_attr_setschedpolicy() and pthread_attr_getschedpolicy(), respectively, set and get the schedpolicy attribute in the
       attr argument.

       The supported values of policy include  SCHED_FIFO, SCHED_RR and  SCHED_OTHER, which are defined by the	header	<sched.h>.   When  threads
       executing  with	the  scheduling  policy  SCHED_FIFO or	SCHED_RR are waiting on a mutex, they acquire the mutex in priority order when the
       mutex is unlocked.

       If successful, the pthread_attr_setschedpolicy() and pthread_attr_getschedpolicy() functions return   0.  Otherwise,  an  error	number	is
       returned to indicate the error.

       The pthread_attr_setschedpolicy() or pthread_attr_getschedpolicy() function may fail if:

       EINVAL	       attr or policy 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_setscope(3C),  pthread_attr_setinheritsched(3C),  pthread_attr_setschedparam(3C),  pthread_create(3C),
       pthread_setschedparam(3C), attributes(5), standards(5)

								    23 Mar 2005 				   pthread_attr_getschedpolicy(3C)