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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