| /* |
| * Copyright (c) 2015, 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 8137121 8137230 |
| * @summary (fc) Infinite loop FileChannel.truncate |
| * @library /lib/testlibrary |
| * @build jdk.testlibrary.Utils |
| * @run main/othervm LoopingTruncate |
| */ |
| |
| import java.nio.ByteBuffer; |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.ClosedByInterruptException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import static java.nio.file.StandardOpenOption.*; |
| import static jdk.testlibrary.Utils.adjustTimeout; |
| |
| public class LoopingTruncate { |
| |
| // (int)FATEFUL_SIZE == -3 == IOStatus.INTERRUPTED |
| static long FATEFUL_SIZE = 0x1FFFFFFFDL; |
| |
| // At least 20 seconds |
| static long TIMEOUT = adjustTimeout(20_000); |
| |
| public static void main(String[] args) throws Throwable { |
| Path path = Files.createTempFile("LoopingTruncate.tmp", null); |
| try (FileChannel fc = FileChannel.open(path, CREATE, WRITE)) { |
| fc.position(FATEFUL_SIZE + 1L); |
| fc.write(ByteBuffer.wrap(new byte[] {0})); |
| |
| Thread th = new Thread(() -> { |
| try { |
| fc.truncate(FATEFUL_SIZE); |
| } catch (ClosedByInterruptException ignore) { |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| }}); |
| th.start(); |
| th.join(TIMEOUT); |
| |
| if (th.isAlive()) { |
| System.err.println("=== Stack trace of the guilty thread:"); |
| for (StackTraceElement el : th.getStackTrace()) { |
| System.err.println("\t" + el); |
| } |
| System.err.println("==="); |
| |
| th.interrupt(); |
| th.join(); |
| throw new RuntimeException("Failed to complete on time"); |
| } |
| } finally { |
| Files.deleteIfExists(path); |
| } |
| } |
| } |