Java example source code file (TestEnvironment.java)

This example Java source code file (TestEnvironment.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

awt, canvas, fixed, graphics, group, hashtable, image, object, options, output, resultset, test, testenvironment, timer, util, window

The TestEnvironment.java Java example source code

/*
 * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */


package j2dbench;

import java.awt.Canvas;
import java.awt.Image;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Dimension;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Toolkit;
import java.util.Hashtable;

import j2dbench.tests.GraphicsTests;

public class TestEnvironment implements Node.Visitor {
    static Group globaloptroot;
    static Group envroot;

    static Option.Int outputWidth;
    static Option.Int outputHeight;

    static Option.Int runCount;
    static Option.Int repCount;
    static Option.Int testTime;

    public static void init() {
        globaloptroot = new Group("global", "Global Options");
        envroot = new Group(globaloptroot, "env", "Test Environment Options");

        outputWidth =
            new Option.Int(envroot, "outputwidth",
                           "Width of Output Window or Image",
                           1, Integer.MAX_VALUE, 640);
        outputHeight =
            new Option.Int(envroot, "outputheight",
                           "Height of Output Window or Image",
                           1, Integer.MAX_VALUE, 480);

        runCount =
            new Option.Int(envroot, "runcount",
                           "Fixed Number of Test Runs per Benchmark",
                           1, Integer.MAX_VALUE, 5);
        repCount =
            new Option.Int(envroot, "repcount",
                           "Fixed Number of Reps (0 means calibrate)",
                           0, Integer.MAX_VALUE, 0);
        testTime =
            new Option.Int(envroot, "testtime",
                           "Target test time to calibrate for",
                           1, Integer.MAX_VALUE, 2500);
    }

    public void visit(Node node) {
        if (node instanceof Test) {
            ((Test) node).runTest(this);
        }
    }

    public void runAllTests() {
        Group.root.traverse(this);
    }

    Canvas comp;
    Image testImage;
    Image srcImage;
    boolean stopped;
    ResultSet results;
    Hashtable modifiers;
    Timer timer;

    public TestEnvironment() {
        results = new ResultSet();
        modifiers = new Hashtable();
        timer = Timer.getImpl();
    }

    public void startTiming() {
        timer.start();
    }

    public void stopTiming() {
        timer.stop();
    }

    public long getTimeMillis() {
        return timer.getTimeMillis();
    }

    public long getTimeNanos() {
        return timer.getTimeNanos();
    }

    public Canvas getCanvas() {
        if (comp == null) {
            final int w = getWidth();
            final int h = getHeight();
            comp = new Canvas() {
                public Dimension getPreferredSize() {
                    return new Dimension(w, h);
                }
            };
        }
        return comp;
    }

    public Image getSrcImage() {
        return srcImage;
    }

    public void stop() {
        stopped = true;
    }

    public boolean isStopped() {
        return stopped;
    }

    public void setTestImage(Image img) {
        this.testImage = img;
    }

    public void setSrcImage(Image img) {
        this.srcImage = img;
    }

    public void erase() {
        Graphics g = getGraphics();
        if (g != null) {
            g.setColor(Color.white);
            g.fillRect(0, 0, getWidth(), getHeight());
            g.dispose();
        }
    }

    public Graphics getGraphics() {
        if (testImage != null) {
            return testImage.getGraphics();
        }
        if (comp != null) {
            return comp.getGraphics();
        }
        return null;
    }

    public int getWidth() {
        return outputWidth.getIntValue();
    }

    public int getHeight() {
        return outputHeight.getIntValue();
    }

    public int getRunCount() {
        return runCount.getIntValue();
    }

    public int getRepCount() {
        return repCount.getIntValue();
    }

    public long getTestTime() {
        return testTime.getIntValue();
    }

    public void sync() {
        if (comp == null) {
            Toolkit.getDefaultToolkit().sync();
        } else {
            comp.getToolkit().sync();
        }
    }

    public boolean idle() {
        if (!stopped) {
            sync();
            System.gc();
            System.runFinalization();
            System.gc();
            sync();
            try {
                Thread.sleep(50);
            } catch (InterruptedException e) {
                stop();
            }
        }
        return stopped;
    }

    public void setModifier(Modifier o, Object v) {
        modifiers.put(o, v);
    }

    public Object getModifier(Modifier o) {
        return modifiers.get(o);
    }

    public boolean isEnabled(Modifier o) {
        return ((Boolean) modifiers.get(o)).booleanValue();
    }

    public int getIntValue(Modifier o) {
        return ((Integer) modifiers.get(o)).intValue();
    }

    public void removeModifier(Modifier o) {
        modifiers.remove(o);
    }

    public Hashtable getModifiers() {
        return (Hashtable) modifiers.clone();
    }

    public void record(Result result) {
        results.record(result);
    }

    public void flushToScreen() {
        if (testImage != null && comp != null) {
            Graphics g = comp.getGraphics();
            if (GraphicsTests.hasGraphics2D) {
                ((Graphics2D) g).setComposite(AlphaComposite.Src);
            }
            g.drawImage(testImage, 0, 0, null);
            g.dispose();
        }
    }

    public void summarize() {
        results.summarize();
    }

    private abstract static class Timer {
        public static Timer getImpl() {
            try {
                System.nanoTime();
                return new Nanos();
            } catch (NoSuchMethodError e) {
                return new Millis();
            }
        }

        public abstract void start();
        public abstract void stop();
        public abstract long getTimeMillis();
        public abstract long getTimeNanos();

        private static class Millis extends Timer {
            private long millis;

            public void start() {
                millis = System.currentTimeMillis();
            }

            public void stop() {
                millis = System.currentTimeMillis() - millis;
            }

            public long getTimeMillis() {
                return millis;
            }

            public long getTimeNanos() {
                return millis * 1000 * 1000;
            }
        }

        private static class Nanos extends Timer {
            private long nanos;

            public void start() {
                nanos = System.nanoTime();
            }

            public void stop() {
                nanos = System.nanoTime() - nanos;
            }

            public long getTimeMillis() {
                return (nanos + (500 * 1000)) / (1000 * 1000);
            }

            public long getTimeNanos() {
                return nanos;
            }
        }
    }
}