test/litmus/store-buffer.cc

   1 #include <stdio.h>
   2 #include <threads.h>
   3 #include <atomic>
   4
   5 std::atomic_int x;
   6 std::atomic_int y;
   7
   8 static void a(void *obj)
   9 {
  10         x.store(1, std::memory_order_relaxed);
  11         printf("y: %d\n", y.load(std::memory_order_relaxed));
  12 }
  13
  14 static void b(void *obj)
  15 {
  16         y.store(1, std::memory_order_relaxed);
  17         printf("x: %d\n", x.load(std::memory_order_relaxed));
  18 }
  19
  20 int user_main(int argc, char **argv)
  21 {
  22         thrd_t t1, t2;
  23
  24         atomic_init(&x, 0);
  25         atomic_init(&y, 0);
  26
  27         printf("Main thread: creating 2 threads\n");
  28         thrd_create(&t1, (thrd_start_t)&a, NULL);
  29         thrd_create(&t2, (thrd_start_t)&b, NULL);
  30
  31         thrd_join(t1);
  32         thrd_join(t2);
  33         printf("Main thread is finished\n");
  34
  35         return 0;
  36 }