added locking performance test

java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/LockTraceTest.java

@@ -6,6 +6,7 @@ import java.util.concurrent.locks.Lock;
 import org.junit.Ignore;
 import org.junit.Test;
 
+import com.sap.sailing.util.impl.LockUtil;
 import com.sap.sailing.util.impl.NamedReentrantReadWriteLock;
 
 public class LockTraceTest {
@@ -34,6 +35,19 @@ public class LockTraceTest {
         }
     }
     
+    @Test
+    public void testLockingPerformance() {
+        NamedReentrantReadWriteLock lock = new NamedReentrantReadWriteLock("Lock", /* fair */ true);
+        long start = System.currentTimeMillis();
+        for (int i=0; i<100000; i++) {
+            LockUtil.lockForRead(lock);
+            LockUtil.unlockAfterRead(lock);
+            LockUtil.lockForWrite(lock);
+            LockUtil.unlockAfterWrite(lock);
+        }
+        System.out.println("Took "+(System.currentTimeMillis()-start)+"ms");
+    }
+    
     @Ignore
     @Test
     public void testLockTraceForMultipleReaders() throws InterruptedException {