1 files changed, 30 insertions, 0 deletions

diff --git a/pintos-progos/tests/vm/page-shuffle.c b/pintos-progos/tests/vm/page-shuffle.c
new file mode 100644
index 0000000..095a9da
--- /dev/null
+++ b/pintos-progos/tests/vm/page-shuffle.c
@@ -0,0 +1,30 @@
+/* Shuffles a 128 kB data buffer 10 times, printing the checksum
+   after each time. */
+
+#include <stdbool.h>
+#include "tests/arc4.h"
+#include "tests/cksum.h"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+#define SIZE (128 * 1024)
+
+static char buf[SIZE];
+
+void
+test_main (void)
+{
+  size_t i;
+
+  /* Initialize. */
+  for (i = 0; i < sizeof buf; i++)
+    buf[i] = i * 257;
+  msg ("init: cksum=%lu", cksum (buf, sizeof buf));
+    
+  /* Shuffle repeatedly. */
+  for (i = 0; i < 10; i++)
+    {
+      shuffle (buf, sizeof buf, 1);
+      msg ("shuffle %zu: cksum=%lu", i, cksum (buf, sizeof buf));
+    }
+}