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 main(String[] args)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 } 91