minix/lib/libc/sys/_exit.c

   1 #include <sys/cdefs.h>
   2 #include "namespace.h"
   3 #include <lib.h>
   4
   5 #include <string.h>
   6 #include <unistd.h>
   7
   8 #ifdef __weak_alias
   9 __weak_alias(_Exit, _exit)
  10 #endif
  11
  12 __dead void _exit(status)
  13 int status;
  14 {
  15   void (*suicide)(void);
  16   message m;
  17
  18   memset(&m, 0, sizeof(m));
  19   m.m_lc_pm_exit.status = status;
  20   _syscall(PM_PROC_NR, PM_EXIT, &m);
  21
  22   /* If exiting nicely through PM fails for some reason, try to
  23    * commit suicide. E.g., message to PM might fail due to deadlock.
  24    */
  25   suicide = (void (*)(void)) -1;
  26   suicide();
  27
  28   /* If committing suicide fails for some reason, hang. */
  29   for(;;) { }
  30 }
  31