clang/test/userprog_unannotated.c

   1 #include <stdio.h>
   2 #include <stdatomic.h>
   3 #include "threads.h"
   4 #include "libinterface.h"
   5
   6 int x;
   7 int y;
   8 int gr1;
   9 int gr2;
  10
  11 static void a(void *obj)
  12 {
  13         int r1 = load_32(&y);
  14         store_32(&x, r1);
  15
  16         store_32(&gr1, r1);
  17         printf("r1=%d\n",r1);
  18 }
  19
  20 static void b(void *obj)
  21 {
  22         int r2=load_32(&x);
  23         store_32(&y, 42);
  24
  25         store_32(&gr2, r2);
  26         printf("r2=%d\n",r2);
  27 }
  28
  29 int user_main(int argc, char **argv)
  30 {
  31         thrd_t t1, t2;
  32
  33         store_32(&x, 0);
  34         store_32(&y, 0);
  35
  36         printf("Main thread: creating 2 threads\n");
  37         thrd_create(&t1, (thrd_start_t)&a, NULL);
  38         thrd_create(&t2, (thrd_start_t)&b, NULL);
  39
  40         thrd_join(t1);
  41         thrd_join(t2);
  42         printf("Main thread is finished\n");
  43         int lgr1=load_32(&gr1);
  44
  45         int lgr2=load_32(&gr2);
  46         if (lgr1==42) {
  47                 if (lgr2==42)
  48                         ;
  49                 else {
  50                 }
  51         } else
  52                 ;
  53
  54         return 0;
  55 }