userprog: move to 'test/' directory

[model-checker.git] / test / userprog.c

diff --git a/test/userprog.c b/test/userprog.c
new file mode 100644 (file)
index 0000000..645dc30
--- /dev/null
+++ b/test/userprog.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+
+#include "libthreads.h"
+#include "librace.h"
+#include "stdatomic.h"
+
+atomic_int x;
+atomic_int y;
+
+static void a(void *obj)
+{
+       int r1=atomic_load_explicit(&y, memory_order_relaxed);
+       atomic_store_explicit(&x, r1, memory_order_relaxed);
+       printf("r1=%u\n",r1);
+}
+
+static void b(void *obj)
+{
+       int r2=atomic_load_explicit(&x, memory_order_relaxed);
+       atomic_store_explicit(&y, 42, memory_order_relaxed);
+       printf("r2=%u\n",r2);
+}
+
+void user_main()
+{
+       thrd_t t1, t2;
+
+       atomic_init(&x, 0);
+       atomic_init(&y, 0);
+
+       printf("Thread %d: creating 2 threads\n", thrd_current());
+       thrd_create(&t1, (thrd_start_t)&a, NULL);
+       thrd_create(&t2, (thrd_start_t)&b, NULL);
+
+       thrd_join(t1);
+       thrd_join(t2);
+       printf("Thread %d is finished\n", thrd_current());
+}