1 /*

     2  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import javax.sound.sampled.AudioFormat;

    25 import javax.sound.sampled.AudioSystem;

    26 import javax.sound.sampled.DataLine;

    27 import javax.sound.sampled.Line;

    28 import javax.sound.sampled.LineUnavailableException;

    29 import javax.sound.sampled.SourceDataLine;

    30 import javax.sound.sampled.TargetDataLine;

    31 

    32 /**

    33  * @test

    34  * @bug 4991672

    35  * @summary disabled assertion at maximum thread priority causes audio crash

    36  * @run main/timeout=600 DisabledAssertionCrash

    37  */

    38 public class DisabledAssertionCrash {

    39     private static final int bufferSize = 1024;

    40 

    41     public static void main(String[] args) {

    42 

    43         System.out.println("This program hangs if priority is set,");

    44         System.out.println("and assertion is in the code.");

    45         System.out.println("The program crashes the entire Windows system");

    46         System.out.println("if assertions are disabled.");

    47         try {

    48             Thread.currentThread().setPriority(Thread.MAX_PRIORITY);

    49             AudioFormat audioFormat = new AudioFormat(44100,16,1,true,true);

    50             Line.Info sourceDataLineInfo = new DataLine.Info(SourceDataLine.class,audioFormat);

    51             SourceDataLine sourceDataLine =

    52             (SourceDataLine) AudioSystem.getLine(sourceDataLineInfo);

    53             System.out.println("SourceDataLine: "+sourceDataLine);

    54             sourceDataLine.open(audioFormat, bufferSize);

    55             sourceDataLine.start();

    56             Line.Info targetDataLineInfo =

    57             new DataLine.Info(TargetDataLine.class,audioFormat);

    58             TargetDataLine targetDataLine =

    59             (TargetDataLine) AudioSystem.getLine(targetDataLineInfo);

    60             System.out.println("TargetDataLine: "+targetDataLine);

    61             targetDataLine.open(audioFormat, bufferSize);

    62             targetDataLine.start();

    63             byte[] data = new byte[bufferSize];

    64 

    65             // execute for 20 seconds

    66             float bufferTime = (((float) data.length) / audioFormat.getFrameSize()) / audioFormat.getFrameRate();

    67             int count = (int) (20.0f / bufferTime);

    68             System.out.println("Buffer time: "+(bufferTime * 1000)+" millis. "+count+" iterations.");

    69             for (int i = 0; i < count; i++) {

    70                 int cnt = targetDataLine.read(data,0,data.length);

    71                 sourceDataLine.write(data,0,cnt);

    72                 assert cnt == data.length;

    73             }

    74             System.out.println("Successfully recorded/played "+count+" buffers. Passed");

    75         } catch(LineUnavailableException lue) {

    76             System.out.println("Audio hardware is not available!");

    77             lue.printStackTrace();

    78             System.out.println("Cannot execute test. NOT failed.");

    79         } catch(IllegalArgumentException iae) {

    80             System.out.println("No audio hardware is installed!");

    81             iae.printStackTrace();

    82             System.out.println("Test system not correctly setup.");

    83             System.out.println("Cannot execute test. NOT failed.");

    84         } catch(Exception e) {

    85             System.out.println("Unexpected Exception: "+e);

    86             e.printStackTrace();

    87             System.out.println("Cannot execute test. NOT failed.");

    88         }

    89     }

    90 }