test/testcases/posixipc/wait_locked/wait_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
  11         pid = fork();
  12         switch (pid) {
  13         case -1:
  14                 /* Error. */
  15                 perror("fork");
  16                 destruct_shared_unnamed_sem(id);
  17                 return 1;
  18         case 0:
  19                 /* Child. */
  20                 sleep(1);
  21                 sem_post(id);
  22                 exit(0);
  23         }
  24
  25         if (testwait(id, &elapsed) < 0) {
  26                 destruct_shared_unnamed_sem(id);
  27                 return 1;
  28         }
  29         if (!ELAPSED(elapsed, 1000)) {
  30                 fprintf(stderr, "sem_wait() with delayed post took %ums "
  31                     "instead of 1000ms", elapsed);
  32                 destruct_shared_unnamed_sem(id);
  33                 return 1;
  34         }
  35
  36         destruct_shared_unnamed_sem(id);
  37
  38         return 0;
  39 }