tests/thread_call_race_71455282.c

   1 #include <darwintest.h>
   2 #include <pthread.h>
   3 #include <sys/syscall.h>
   4 #include <unistd.h>
   5
   6 #include <mach/mach_init.h>
   7 #include <mach/mach_port.h>
   8 #include <mach/mk_timer.h>
   9 #include <mach/task.h>
  10
  11 #define die(w) errx(1, (w))
  12 #define edie(w) err(1, (w))
  13 #define expect(e) if (-1 == (e)) edie(#e)
  14
  15 static void *
  16 racer(void *data)
  17 {
  18         for (;;) {
  19                 mk_timer_destroy(*(mach_port_t *)data);
  20         }
  21
  22         return NULL;
  23 }
  24
  25 T_DECL(thread_call_race_71455282,
  26     "rdar://71455282",
  27     T_META_IGNORECRASHES(".*thread_call_race_71455282.*"))
  28 {
  29         mach_port_t timer = MACH_PORT_NULL;
  30         pthread_t t;
  31         size_t n;
  32
  33         /* we will violate mach rules so ignore crashes here */
  34         T_ASSERT_MACH_SUCCESS(task_set_exc_guard_behavior(mach_task_self(), 0),
  35             "task_set_exc_guard_behavior");
  36
  37         for (n = 0; n < 4; ++n) {
  38                 T_ASSERT_POSIX_SUCCESS(pthread_create(&t, NULL, racer, &timer),
  39                     "pthread_create");
  40         }
  41
  42         T_LOG("racing");
  43         for (size_t i = 0; i < 1000; i++) {
  44                 timer = mk_timer_create();
  45                 mk_timer_arm(timer, 1);
  46                 mk_timer_destroy(timer);
  47                 timer = MACH_PORT_NULL;
  48         }
  49
  50         T_PASS("didn't panic");
  51         T_END;
  52 }