test/csetest.c

   1 #include <stdio.h>
   2 #include <threads.h>
   3 #include <stdatomic.h>
   4
   5 #include "librace.h"
   6
   7 atomic_int a;
   8 atomic_int b;
   9
  10 static void r(void *obj)
  11 {
  12         int r1=atomic_load_explicit(&a, memory_order_relaxed);
  13         int r2=atomic_load_explicit(&a, memory_order_relaxed);
  14         if (r1==r2)
  15                 atomic_store_explicit(&b, 2, memory_order_relaxed);
  16         printf("r1=%d\n",r1);
  17         printf("r2=%d\n",r2);
  18 }
  19
  20 static void s(void *obj)
  21 {
  22         int r3=atomic_load_explicit(&b, memory_order_relaxed);
  23         atomic_store_explicit(&a, r3, memory_order_relaxed);
  24         printf("r3=%d\n",r3);
  25 }
  26
  27 int user_main(int argc, char **argv)
  28 {
  29         thrd_t t1, t2;
  30
  31         atomic_init(&a, 0);
  32         atomic_init(&b, 1);
  33
  34         printf("Main thread: creating 2 threads\n");
  35         thrd_create(&t1, (thrd_start_t)&r, NULL);
  36         thrd_create(&t2, (thrd_start_t)&s, NULL);
  37
  38         thrd_join(t1);
  39         thrd_join(t2);
  40         printf("Main thread is finished\n");
  41
  42         return 0;
  43 }