| /* |
| * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @run main/manual TestVetoableChangeSupport |
| * @summary Tests just a benchmark of VetoableChangeSupport performance |
| * @author Sergey Malenkov |
| */ |
| |
| import java.beans.PropertyChangeEvent; |
| import java.beans.PropertyVetoException; |
| import java.beans.VetoableChangeListener; |
| import java.beans.VetoableChangeSupport; |
| |
| public class TestVetoableChangeSupport implements VetoableChangeListener { |
| private static final String NAME = "property"; |
| |
| public static void main(String[] args) throws PropertyVetoException { |
| for (int i = 1; i <= 3; i++) { |
| test(i, 1, 10000000); |
| test(i, 10, 1000000); |
| test(i, 100, 100000); |
| test(i, 1000, 10000); |
| test(i, 10000, 1000); |
| test(i, 20000, 1000); |
| } |
| } |
| |
| private static void test(int step, int listeners, int attempts) throws PropertyVetoException { |
| TestVetoableChangeSupport test = new TestVetoableChangeSupport(); |
| VetoableChangeSupport vcs = new VetoableChangeSupport(test); |
| PropertyChangeEvent eventNull = new PropertyChangeEvent(test, null, null, null); |
| PropertyChangeEvent eventName = new PropertyChangeEvent(test, NAME, null, null); |
| long time1 = System.currentTimeMillis(); |
| for (int i = 0; i < listeners; i++) { |
| vcs.addVetoableChangeListener(test); |
| vcs.addVetoableChangeListener(NAME, test); |
| } |
| long time2 = System.currentTimeMillis(); |
| for (int i = 0; i < attempts; i++) { |
| vcs.fireVetoableChange(eventNull); |
| vcs.fireVetoableChange(eventName); |
| } |
| long time3 = System.currentTimeMillis(); |
| time1 = time2 - time1; // time of adding the listeners |
| time2 = time3 - time2; // time of firing the events |
| System.out.println("Step: " + step |
| + "; Listeners: " + listeners |
| + "; Attempts: " + attempts |
| + "; Time (ms): " + time1 + "/" + time2); |
| } |
| |
| public void vetoableChange(PropertyChangeEvent event) { |
| } |
| } |