test/sctest.c

   1 #include <stdio.h>
   2 #include <threads.h>
   3 #include <stdatomic.h>
   4
   5 #include "librace.h"
   6
   7 atomic_int x;
   8 atomic_int y;
   9 atomic_int z;
  10
  11 static void a(void *obj)
  12 {
  13         atomic_store_explicit(&z, 1, memory_order_relaxed);
  14 }
  15
  16 static void b(void *obj)
  17 {
  18         atomic_store_explicit(&x, 1, memory_order_relaxed);
  19         atomic_store_explicit(&y, 1, memory_order_relaxed);
  20         int r1=atomic_load_explicit(&z, memory_order_relaxed);
  21 }
  22 static void c(void *obj)
  23 {
  24         atomic_store_explicit(&z, 2, memory_order_relaxed);
  25         atomic_store_explicit(&x, 2, memory_order_relaxed);
  26         int r2=atomic_load_explicit(&y, memory_order_relaxed);
  27 }
  28
  29 static void d(void *obj)
  30 {
  31         atomic_store_explicit(&z, 3, memory_order_relaxed);
  32         atomic_store_explicit(&y, 2, memory_order_relaxed);
  33         int r3=atomic_load_explicit(&x, memory_order_relaxed);
  34 }
  35
  36 int user_main(int argc, char **argv)
  37 {
  38         thrd_t t1, t2,t3, t4;
  39
  40         atomic_init(&x, 0);
  41         atomic_init(&y, 0);
  42         atomic_init(&z, 0);
  43
  44         thrd_create(&t1, (thrd_start_t)&a, NULL);
  45         thrd_create(&t2, (thrd_start_t)&b, NULL);
  46         thrd_create(&t3, (thrd_start_t)&c, NULL);
  47         thrd_create(&t4, (thrd_start_t)&d, NULL);
  48
  49         thrd_join(t1);
  50         thrd_join(t2);
  51         thrd_join(t3);
  52         thrd_join(t4);
  53
  54         return 0;
  55 }