undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.

test/jdk/javax/swing/MultiMonitor/MultimonVImage.java

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+/*
+ * Copyright (c) 2000, 2024, 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
+ * @bug 4371134
+ * @key headful
+ * @summary displays an animating fps (frames per second)
+ *  counter.  When the window is dragged from monitor to monitor,
+ *  the speed of the animation should not change too greatly.
+ * @library /java/awt/regtesthelpers
+ * @build PassFailJFrame
+ * @run main/manual MultimonVImage
+ */
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import javax.swing.JFrame;
+import javax.swing.JViewport;
+
+public class MultimonVImage {
+    private static final String instructionsText =
+            "This test should be run on any Windows platform that\n" +
+            "supports multiple monitors.\n" +
+            "You will see an animating fps (frames per second) counter at\n" +
+            "the bottom of the window.  Drag the window into the other monitor\n" +
+            "and that counter should not change drastically.  If the counter\n" +
+            "is much lower on one monitor than the other (barring situations\n" +
+            "described below) then the back buffer may not be accelerated\n" +
+            "on the second monitor and the test fails.\n" +
+            "Situations in which performance will differ even though there\n" +
+            "is acceleration on both monitors include:\n" +
+            "  - different bit depths on each monitor.  The higher the bits\n" +
+            "    per pixel, the more data to push and the lower the fps number.\n" +
+            "    Set the bit depths to be the same on both monitors to work\n" +
+            "    around this issue.\n" +
+            "  - the amount of acceleration available on each video card differs,\n" +
+            "    so if your system uses different video cards then you should\n" +
+            "    expect some difference between the cards.  To work around this\n" +
+            "    issue, try to use the same or similar video cards for each monitor.";
+
+    public static void main(String[] args) throws Exception {
+        PassFailJFrame.builder()
+                .title("MultimonVImage Instructions")
+                .instructions(instructionsText)
+                .testTimeOut(5)
+                .rows(25)
+                .columns(50)
+                .testUI(() -> {
+                    AnimatingFrame af = new AnimatingFrame();
+                    af.test();
+                    af.run();
+                    return af;
+                })
+                .build()
+                .awaitAndCheck();
+    }
+}
+
+class FrameCounter {
+
+    String fpsString = "Calculating...";
+    long startTime, endTime;
+    int numFrames;
+
+    public FrameCounter() {
+        startTime = System.currentTimeMillis();
+    }
+
+    public String addFrame() {
+        ++numFrames;
+        return calculateFPS();
+    }
+
+    String calculateFPS() {
+        endTime = System.currentTimeMillis();
+        double seconds = ((double) endTime - (double) startTime) / 1000;
+        if (seconds > 1) {
+            int fps = (int) (numFrames / seconds);
+            fpsString = fps + " fps";
+            startTime = endTime;
+            numFrames = 0;
+        }
+        return fpsString;
+    }
+}
+
+class AnimatingComponent extends JViewport {
+
+    FrameCounter frameCounter;
+    int boxX, boxY;
+    int boxW, boxH;
+    int xStep = 1;
+
+    public AnimatingComponent() {
+        frameCounter = new FrameCounter();
+        boxX = 0;
+        boxY = 0;
+        boxW = 100;
+        boxH = 100;
+    }
+
+    public void paintComponent(Graphics g) {
+        boxX += xStep;
+        if (boxX <= 0 || (boxX + boxW) > getWidth()) {
+            xStep = -xStep;
+            boxX += (2 * xStep);
+        }
+        g.setColor(Color.white);
+        g.fillRect(0, 0, getWidth(), getHeight());
+        g.setColor(Color.green);
+        for (int i = 0; i < 100; ++i) {
+            g.fillRect(boxX, boxY, 100, 100);
+        }
+        g.setColor(Color.black);
+        g.drawString(frameCounter.addFrame(), 200, getHeight() - 30);
+    }
+}
+
+class AnimatingFrame extends JFrame implements Runnable {
+    JViewport component;
+    Thread thread;
+
+    public AnimatingFrame() {
+        setSize(500, 500);
+        setTitle("MultimonVImage Demo");
+        addWindowListener(new WindowAdapter() {
+            public void windowClosing(WindowEvent e) {
+                System.exit(0);
+            }
+        });
+
+        component = new AnimatingComponent();
+        component.setPreferredSize(new Dimension(500, 500));
+        setContentPane(component);
+        component.setVisible(true);
+
+        pack();
+    }
+
+    public void test() {
+        thread = new Thread(this);
+        thread.setPriority(Thread.MIN_PRIORITY);
+        thread.start();
+    }
+
+    public void run() {
+        Thread me = Thread.currentThread();
+        while (thread == me) {
+            component.repaint();
+        }
+    }
+}
+