minix/lib/libsys/sched_stop.c

   1 #include "syslib.h"
   2 #include <assert.h>
   3 #include <string.h>
   4 #include <minix/sched.h>
   5
   6 /*===========================================================================*
   7  *                              sched_stop                                   *
   8  *===========================================================================*/
   9 int sched_stop(endpoint_t scheduler_e, endpoint_t schedulee_e)
  10 {
  11         int rv;
  12         message m;
  13
  14         /* If the kernel is the scheduler, it will implicitly stop scheduling
  15          * once another process takes over or the process terminates */
  16         if (scheduler_e == KERNEL || scheduler_e == NONE)
  17                 return(OK);
  18
  19         /* User-scheduled, perform the call */
  20         assert(_ENDPOINT_P(scheduler_e) >= 0);
  21         assert(_ENDPOINT_P(schedulee_e) >= 0);
  22
  23         memset(&m, 0, sizeof(m));
  24         m.m_lsys_sched_scheduling_stop.endpoint = schedulee_e;
  25         if ((rv = _taskcall(scheduler_e, SCHEDULING_STOP, &m))) {
  26                 return rv;
  27         }
  28
  29         return (OK);
  30 }