tools/regression/p1003_1b/prutil.c

   1 #include <errno.h>
   2 #include <unistd.h>
   3 #include <sys/sched.h>
   4 #include <stdio.h>
   5
   6 #include <err.h>
   7 #include <sysexits.h>
   8 #include "prutil.h"
   9
  10 /*
  11  * $FreeBSD: src/tools/regression/p1003_1b/prutil.c,v 1.1 2000/02/16 14:28:41 dufault Exp $
  12  * $DragonFly: src/tools/regression/p1003_1b/prutil.c,v 1.3 2007/06/26 23:30:05 josepht Exp $
  13  */
  14 void quit(const char *text)
  15 {
  16         err(errno, text);
  17 }
  18
  19 char *sched_text(int scheduler)
  20 {
  21         switch(scheduler)
  22         {
  23                 case SCHED_FIFO:
  24                 return "SCHED_FIFO";
  25
  26                 case SCHED_RR:
  27                 return "SCHED_RR";
  28
  29                 case SCHED_OTHER:
  30                 return "SCHED_OTHER";
  31
  32                 default:
  33                 return "Illegal scheduler value";
  34         }
  35 }
  36
  37 int sched_is(int line, struct sched_param *p, int shouldbe)
  38 {
  39         int scheduler;
  40         struct sched_param param;
  41
  42         /* What scheduler are we running now?
  43          */
  44         errno = 0;
  45         scheduler = sched_getscheduler(0);
  46         if (sched_getparam(0, &param))
  47                 quit("sched_getparam");
  48
  49         if (p)
  50                 *p = param;
  51
  52         if (shouldbe != -1 && scheduler != shouldbe)
  53         {
  54                 fprintf(stderr,
  55                 "At line %d the scheduler should be %s yet it is %s.\n",
  56                 line, sched_text(shouldbe), sched_text(scheduler));
  57
  58                 exit(-1);
  59         }
  60
  61         return scheduler;
  62 }