gcc/testsuite/c-c++-common/tsan/step.c

   1 /* { dg-do compile } */
   2
   3 extern int sched_yield (void);
   4 static volatile int serial = 0;
   5
   6 __attribute__((no_sanitize_thread))
   7 void step (int i)
   8 {
   9    while (__atomic_load_n (&serial, __ATOMIC_ACQUIRE) != i - 1)
  10      sched_yield ();
  11    __atomic_store_n (&serial, i, __ATOMIC_RELEASE);
  12 }
  13
  14 /* { dg-final { scan-assembler-not "__tsan_func_entry" } } */
  15 /* { dg-final { scan-assembler-not "__tsan_func_exit" } } */