src/bin/prio.c

   1 /* prio.c - prio command for BeOs, change priority of a given thread
   2  * (c) 2001, 2002, François Revol (mmu_man) for OpenBeOS
   3  * released under the MIT licence.
   4  *
   5  * ChangeLog:
   6  * 04-26-2002 v1.2
   7  *  fixed a typo on error (Priority changed failed.)
   8  * 04-25-2002 v1.1
   9  *  Initial. Used my renice.c code to rewrite 'prio' BeOS command for OpenBeOS.
  10  *
  11  * prio is a stripped-down version of renice
  12  * seems to behave the same way as the original BeOS version. :)
  13  */
  14
  15 #include <OS.h>
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18
  19 int main(int argc, char **argv)
  20 {
  21         thread_id th;
  22         int32 prio;
  23         status_t ret;
  24
  25         if (argc != 3) {
  26                 puts("Usage: prio pid newpriority");
  27                 return 1;
  28         }
  29
  30         th = atoi(argv[1]);
  31         prio = atoi(argv[2]);
  32
  33         // ret > 0 means successful, and is the previous priority
  34         ret = set_thread_priority(th, prio);
  35         if (ret >= B_OK)
  36                 return 0;
  37         puts("Priority change failed.");
  38         return 1;
  39 }
  40