minix/lib/libsys/sched_stop.c
David van Moolenbroek 80bd109cd3 libsys: various updates
- move system calls for use by services from libminlib into libsys;
- move srv_fork(2) and srv_kill(2) from RS and into libsys;
- replace getprocnr(2) with sef_self(3);
- rename previous getnprocnr(2) to getprocnr(2);
- clean up getepinfo(2);
- change all libsys calls that used _syscall to use _taskcall, so as
  to avoid going through errno to pass errors; this is already how
  most calls work anyway, and many of the calls previously using
  _syscall were already assumed to return the actual error;
- initialize request messages to zero, for future compatibility
  (note that this does not include PCI calls, which are in need of a
  much bigger overhaul, nor kernel calls);
- clean up more of dead DS code as a side effect.

Change-Id: I8788f54c68598fcf58e23486e270c2d749780ebb
2014-03-01 09:05:00 +01:00

29 lines
815 B
C

#include "syslib.h"
#include <assert.h>
#include <string.h>
/*===========================================================================*
* sched_stop *
*===========================================================================*/
int sched_stop(endpoint_t scheduler_e, endpoint_t schedulee_e)
{
int rv;
message m;
/* If the kernel is the scheduler, it will implicitly stop scheduling
* once another process takes over or the process terminates */
if (scheduler_e == KERNEL || scheduler_e == NONE)
return(OK);
/* User-scheduled, perform the call */
assert(_ENDPOINT_P(scheduler_e) >= 0);
assert(_ENDPOINT_P(schedulee_e) >= 0);
memset(&m, 0, sizeof(m));
m.SCHEDULING_ENDPOINT = schedulee_e;
if ((rv = _taskcall(scheduler_e, SCHEDULING_STOP, &m))) {
return rv;
}
return (OK);
}