/*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <assert.h>
#include <sched.h>
#include <errno.h>
#include <rtems/system.h>
#include <rtems/score/tod.h>
#include <rtems/score/thread.h>
#include <rtems/seterr.h>
#include <rtems/posix/priority.h>
#include <rtems/posix/time.h>
/*PAGE
*
* 13.3.1 Set Scheduling Parameters, P1003.1b-1993, p. 252
*
*/
int sched_setparam(
pid_t pid,
const struct sched_param *param
)
{
rtems_set_errno_and_return_minus_one( ENOSYS );
}
/*PAGE
*
* 13.3.2 Set Scheduling Parameters, P1003.1b-1993, p. 253
*/
int sched_getparam(
pid_t pid,
const struct sched_param *param
)
{
rtems_set_errno_and_return_minus_one( ENOSYS );
}
/*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
)
{
rtems_set_errno_and_return_minus_one( ENOSYS );
}
/*PAGE
*
* 13.3.4 Get Scheduling Policy, P1003.1b-1993, p. 256
*/
int sched_getscheduler(
pid_t pid
)
{
rtems_set_errno_and_return_minus_one( ENOSYS );
}
/*PAGE
*
* 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258
*/
int sched_get_priority_max(
int policy
)
{
switch ( policy ) {
case SCHED_OTHER:
case SCHED_FIFO:
case SCHED_RR:
case SCHED_SPORADIC:
break;
default:
rtems_set_errno_and_return_minus_one( EINVAL );
}
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
)
{
switch ( policy ) {
case SCHED_OTHER:
case SCHED_FIFO:
case SCHED_RR:
case SCHED_SPORADIC:
break;
default:
rtems_set_errno_and_return_minus_one( EINVAL );
}
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
)
{
/* XXX do we need to support different time quantums per thread */
/*
* Only supported for the "calling process" (i.e. this node).
*/
if ( pid && pid != getpid() )
rtems_set_errno_and_return_minus_one( ESRCH );
if ( !interval )
rtems_set_errno_and_return_minus_one( EINVAL );
_POSIX_Interval_to_timespec( _Thread_Ticks_per_timeslice, interval );
return 0;
}
/*PAGE
*
* 13.3.5 Yield Processor, P1003.1b-1993, p. 257
*/
int sched_yield( void )
{
_Thread_Disable_dispatch();
_Thread_Yield_processor();
_Thread_Enable_dispatch();
return 0;
}
