PTHREAD_SCHEDPARAM(3)					   BSD Library Functions Manual 				     PTHREAD_SCHEDPARAM(3)

NAME

     pthread_setschedparam, pthread_getschedparam -- thread scheduling parameter manipulation

LIBRARY

     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS

     #include <pthread.h>

     int
     pthread_setschedparam(pthread_t thread, int policy, const struct sched_param *param);

     int
     pthread_getschedparam(pthread_t thread, int * restrict policy, struct sched_param * restrict param);

DESCRIPTION

     The pthread_setschedparam() and pthread_getschedparam() functions set and get the scheduling parameters of individual threads.  The schedul-
     ing policy for a thread can be:

	   SCHED_FIFO	First in, first out.

	   SCHED_RR	Round-robin.

	   SCHED_OTHER	The system default.

     The thread priority (accessed via param->sched_priority) must be at least PTHREAD_MIN_PRIORITY and no more than PTHREAD_MAX_PRIORITY.

RETURN VALUES

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

ERRORS

     pthread_setschedparam() may fail if:

     [EINVAL]		The value specified by policy is invalid.

     [ENOTSUP]		Invalid value for scheduling parameters.

     [ESRCH]		Non-existent thread thread.

     pthread_getschedparam() may fail if:

     [ESRCH]		Non-existent thread thread.

SEE ALSO

     pthread_attr_getschedparam(3), sched(3)

STANDARDS

     Both functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').

BSD
								   July 9, 2010 							       BSD