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

NAME
     pthread_attr_getschedparam, pthread_attr_setschedparam -- thread attribute operations

SYNOPSIS
     #include <pthread.h>

     int
     pthread_attr_getschedparam(const pthread_attr_t *restrict attr, struct sched_param *restrict param);

     int
     pthread_attr_setschedparam(pthread_attr_t *restrict attr, const struct sched_param *restrict param);

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.

     pthread_attr_getschedparam() and pthread_attr_setschedparam() get and set the scheduling parameters
     within the attr argument. See /usr/include/sched.h
     for the definition of struct sched_param.  The sched_priority field of struct sched_param can be set to
     SCHED_OTHER, SCHED_FIFO and SCHED_RR.

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

ERRORS
     pthread_attr_getschedparam() will fail if:

     [EINVAL]           Invalid value for attr.

     pthread_attr_setschedparam() will fail if:

     [EINVAL]           Invalid value for attr.

     [ENOTSUP]          Invalid value for param.

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

STANDARDS
     pthread_attr_setschedparam(), pthread_attr_getschedparam() conform to Version 2 of the Single UNIX
     Specification (``SUSv2'')

BSD                            December 31, 2007                           BSD