added method for peeking at first scheduled event

tools/cooja/java/se/sics/cooja/EventQueue.java

@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: EventQueue.java,v 1.5 2009/03/03 13:42:45 fros4943 Exp $
+ * $Id: EventQueue.java,v 1.6 2009/05/26 13:36:36 fros4943 Exp $
  */
 
 package se.sics.cooja;
@@ -189,6 +189,14 @@ public class EventQueue {
     return tmp;
   }
 
+  public TimeEvent peekFirst() {
+    if (hasUnsortedEvents) {
+      sortEvents();
+    }
+
+    return first;
+  }
+
   public String toString() {
     return "EventQueue with " + (eventCount+unsortedEvents.size()) + " events";
   }