add tool for measuring cycles/sec

1 files changed, 25 insertions, 0 deletions

diff --git a/bin/cycles.c b/bin/cycles.c
new file mode 100644
index 0000000..4e5a078
--- /dev/null
+++ b/bin/cycles.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "cycles.h"
+
+int main(int argc, char** argv)
+{
+        cycles_t t1, t2;
+        int secs = 1;
+        
+        if (argc > 1) {
+                secs = atoi(argv[1]);
+                if (secs <= 0)
+                        secs = 1;
+        }
+        while (1) {
+                t1 = get_cycles();
+                sleep(secs);
+                t2 = get_cycles();
+                t2 -= t1;
+                printf("%.2f/sec\n", t2 / (double) secs);
+        }
+        return 0;
+}