X-Git-Url: http://demsky.eecs.uci.edu/git/?p=model-checker.git;a=blobdiff_plain;f=test%2Firiw.cc;fp=test%2Firiw.cc;h=fddbf1aa785f93e4bfa7f88185d96e1b7b496d7b;hp=0000000000000000000000000000000000000000;hb=042d2f1a02853db95cbd4bedf52c6b6bbab6b48e;hpb=a65e234b607444355eb6e34097ee55ba93d4c01b

diff --git a/test/iriw.cc b/test/iriw.cc
new file mode 100644
index 0000000..fddbf1a
--- /dev/null
+++ b/test/iriw.cc
@@ -0,0 +1,66 @@
+/**
+ * @file iriw.cc
+ * @brief Independent read and independent write test
+ */
+
+#include <atomic>
+#include <threads.h>
+#include <stdio.h>
+
+#include "wildcard.h"
+#include "model-assert.h"
+
+using namespace std;
+
+atomic_int x, y;
+int r1, r2, r3, r4; /* "local" variables */
+
+static void a(void *obj)
+{
+	x.store(1, memory_order_seq_cst);
+}
+
+static void b(void *obj)
+{
+	y.store(1, memory_order_seq_cst);
+}
+
+static void c(void *obj)
+{
+	r1 = x.load(memory_order_acquire);
+	r2 = y.load(memory_order_seq_cst);
+}
+
+static void d(void *obj)
+{
+	r3 = y.load(memory_order_acquire);
+	r4 = x.load(memory_order_seq_cst);
+}
+
+
+int user_main(int argc, char **argv)
+{
+	thrd_t t1, t2, t3, t4;
+
+	atomic_init(&x, 0);
+	atomic_init(&y, 0);
+
+	printf("Main thread: creating 4 threads\n");
+	thrd_create(&t1, (thrd_start_t)&a, NULL);
+	thrd_create(&t2, (thrd_start_t)&b, NULL);
+	thrd_create(&t3, (thrd_start_t)&c, NULL);
+	thrd_create(&t4, (thrd_start_t)&d, NULL);
+
+	thrd_join(t1);
+	thrd_join(t2);
+	thrd_join(t3);
+	thrd_join(t4);
+	printf("Main thread is finished\n");
+
+	/*
+	 * This condition should not be hit if the execution is SC */
+	bool sc = (r1 == 1 && r2 == 0 && r3 == 1 && r4 == 0);
+	printf("r1 = %d, r2 = %d, r3 = %d and r4 = %d\n", r1, r2, r3, r4);
+	MODEL_ASSERT(!sc);
+	return 0;
+}