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/*
* $Id$
*/
#include <sched.h>
#include <rtems/system.h>
#include <rtems/score/tod.h>
#include <rtems/score/thread.h>
#include <rtems/posix/priority.h>
/*PAGE
*
* 13.3.1 Set Scheduling Parameters, P1003.1b-1993, p. 252
*
*/
int sched_setparam(
pid_t pid,
const struct sched_param *param
)
{
return POSIX_NOT_IMPLEMENTED();
}
/*PAGE
*
* 13.3.2 Set Scheduling Parameters, P1003.1b-1993, p. 253
*/
int sched_getparam(
pid_t pid,
const struct sched_param *param
)
{
return POSIX_NOT_IMPLEMENTED();
}
/*PAGE
*
* 13.3.3 Set Scheduling Policy and Scheduling Parameters,
* P1003.1b-1993, p. 254
*/
int sched_setscheduler(
pid_t pid,
int policy,
const struct sched_param *param
)
{
/*
* Only supported for the "calling process" (i.e. this node).
*/
assert( pid == getpid() );
return POSIX_NOT_IMPLEMENTED();
}
/*PAGE
*
* 13.3.4 Get Scheduling Policy, P1003.1b-1993, p. 256
*/
int sched_getscheduler(
pid_t pid
)
{
/*
* Only supported for the "calling process" (i.e. this node).
*/
assert( pid == getpid() );
return POSIX_NOT_IMPLEMENTED();
}
/*PAGE
*
* 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
*/
int sched_get_priority_max(
int policy
)
{
/* XXX error check the policy */
return POSIX_SCHEDULER_MAXIMUM_PRIORITY;
}
/*PAGE
*
* 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
*/
int sched_get_priority_min(
int policy
)
{
/* XXX error check the policy */
return POSIX_SCHEDULER_MINIMUM_PRIORITY;
}
/*PAGE
*
* 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
*/
int sched_rr_get_interval(
pid_t pid,
struct timespec *interval
)
{
time_t us_per_quantum;
/* XXX eventually should support different time quantums per thread */
/* XXX should get for errors? (bad pid) */
/* XXX some of the time routines also convert usecs to a timespec -- */
/* XXX should this be a common routine? */
us_per_quantum = _TOD_Microseconds_per_tick * _Thread_Ticks_per_timeslice;
interval->tv_sec = us_per_quantum / TOD_MICROSECONDS_PER_SECOND;
interval->tv_nsec = (us_per_quantum % TOD_MICROSECONDS_PER_SECOND) *
TOD_NANOSECONDS_PER_MICROSECOND;
return 0;
}
/*PAGE
*
* 13.3.5 Yield Processor, P1003.1b-1993, p. 257
*/
int sched_yield( void )
{
_Thread_Yield_processor();
return 0;
}
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