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