| /* |
| * Copyright (c) 2005, 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 6219755 |
| * @summary Write end loops infinitely when the |
| * buffer is full and the read end has closed. |
| */ |
| |
| import java.io.*; |
| |
| public class WriterLoop extends Thread { |
| |
| static PipedOutputStream out; |
| static PipedInputStream in; |
| |
| public void run() { |
| try { |
| System.out.println("Writer started."); |
| |
| // without the fix, this test will hang at this point, |
| // i.e inside the call to write() |
| out.write(new byte[64*1024]); |
| } catch (Throwable e) { |
| |
| // with the fix an IOException is caught |
| System.out.println("Writer exception:"); |
| e.printStackTrace(); |
| } finally { |
| System.out.println("Writer done."); |
| } |
| } |
| |
| public static void main(String args[]) throws Exception { |
| in = new PipedInputStream(); |
| out = new PipedOutputStream(in); |
| WriterLoop writer = new WriterLoop(); |
| writer.start(); |
| |
| try { |
| System.out.println("Reader reading..."); |
| in.read(new byte[2048]); |
| |
| System.out.println("Reader closing stream..."); |
| in.close(); |
| |
| System.out.println("Reader sleeping 3 seconds..."); |
| Thread.sleep(3000); |
| } catch (Throwable e) { |
| System.out.println("Reader exception:"); |
| e.printStackTrace(); |
| } finally { |
| System.out.println("Active threads:"); |
| Thread[] threads = new Thread[Thread.activeCount()]; |
| Thread.enumerate(threads); |
| for (int i = 0; i < threads.length; i++) { |
| System.out.println(" " + threads[i]); |
| } |
| System.out.println("Waiting for writer..."); |
| writer.join(); |
| System.out.println("Done."); |
| } |
| } |
| } |