test/testcases/posixipc/timedwait_locked/timedwait_locked.c

   1 #include <common.h>
   2
   3 int
   4 main(void) {
   5         sem_t *id;
   6         u_int elapsed;
   7         pid_t pid;
   8
   9         id = construct_shared_unnamed_sem(0);
  10         if (id == SEM_FAILED) {
  11                 fprintf(stderr, "construct sem\n");
  12                 return 1;
  13         }
  14
  15         pid = fork();
  16         switch (pid) {
  17         case -1:
  18                 /* Error. */
  19                 perror("fork");
  20                 destruct_shared_unnamed_sem(id);
  21                 return 1;
  22         case 0:
  23                 /* Child. */
  24                 sleep(1);
  25                 sem_post(id);
  26                 exit(0);
  27         }
  28
  29         if (timedwait(id, 2000, &elapsed, 0) < 0) {
  30                 destruct_shared_unnamed_sem(id);
  31                 return 1;
  32         }
  33         if (!ELAPSED(elapsed, 1000)) {
  34                 fprintf(stderr, "sem_timedwait() with delayed post took %ums "
  35                     "instead of 1000ms", elapsed);
  36                 destruct_shared_unnamed_sem(id);
  37                 return 1;
  38         }
  39
  40         destruct_shared_unnamed_sem(id);
  41
  42         return 0;
  43 }