added xdc.services.global.Clock
diff --git a/packages/xdc/services/global/Clock.java b/packages/xdc/services/global/Clock.java
new file mode 100644
index 0000000..661c565
--- /dev/null
+++ b/packages/xdc/services/global/Clock.java
@@ -0,0 +1,34 @@
+package xdc.services.global;
+
+public class Clock {
+
+ static private boolean master = false;
+
+ private long t0 = 0;
+ private long prev = 0;
+ private boolean enabled = false;
+
+ public void enable()
+ {
+ enabled = true;
+ }
+
+ public void print( String msg )
+ {
+ if (master && enabled) {
+ long cur = System.currentTimeMillis();
+ System.out.printf("%s [%d]\n", msg, cur - prev);
+ prev = cur;
+ }
+ }
+
+ public void reset()
+ {
+ prev = t0 = System.currentTimeMillis();
+ }
+
+ public long total()
+ {
+ return System.currentTimeMillis() - t0;
+ }
+}
