| /* |
| * Copyright (c) 2003, 2011, 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 4820217 |
| * @summary Ensure that pending reads on stdout and stderr streams |
| * return -1 when the process is destroyed |
| */ |
| |
| import java.io.*; |
| import java.util.concurrent.*; |
| |
| |
| public class StreamsSurviveDestroy { |
| |
| private static class Copier extends Thread { |
| |
| String name; |
| InputStream in; |
| OutputStream out; |
| boolean wantInterrupt; |
| boolean acceptException; |
| Exception exc = null; |
| CountDownLatch latch; |
| |
| Copier(String name, InputStream in, OutputStream out, |
| boolean ae, boolean wi, CountDownLatch l) |
| { |
| this.name = name; |
| this.in = in; |
| this.out = out; |
| this.acceptException = ae; |
| this.wantInterrupt = wi; |
| this.latch = l; |
| setName(name); |
| start(); |
| } |
| |
| private void log(String s) { |
| System.err.println(" " + name + ": " + s); |
| } |
| |
| public void run() { |
| byte[] buf = new byte[4242]; |
| latch.countDown(); |
| for (;;) { |
| try { |
| int n = in.read(buf); |
| if (n < 0) { |
| System.err.println(" EOF"); |
| break; |
| } |
| out.write(buf, 0, n); |
| } catch (IOException x) { |
| if (wantInterrupt) { |
| if (x instanceof InterruptedIOException) { |
| log("Interrupted as expected"); |
| return; |
| } |
| exc = new Exception(name |
| + ": Not interrupted as expected"); |
| return; |
| } |
| exc = x; |
| if (acceptException) { |
| log("Thrown, but okay: " + x); |
| return; |
| } |
| return; |
| } |
| } |
| } |
| |
| public void check() throws Exception { |
| if (!acceptException && exc != null) |
| throw new Exception(name + ": Exception thrown", exc); |
| } |
| |
| } |
| |
| static void test() throws Exception { |
| CountDownLatch latch = new CountDownLatch(2); |
| |
| System.err.println("test"); |
| Process p = Runtime.getRuntime().exec(UnixCommands.cat()); |
| Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| false, false, latch); |
| Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| false, false, latch); |
| latch.await(); // Wait till both Copiers about to read |
| Thread.sleep(100);// Give both Copiers a chance to start read |
| |
| p.destroy(); |
| System.err.println(" exit: " + p.waitFor()); |
| cp1.join(); |
| cp1.check(); |
| cp2.join(); |
| cp2.check(); |
| } |
| |
| static void testCloseBeforeDestroy() throws Exception { |
| CountDownLatch latch = new CountDownLatch(2); |
| |
| System.err.println("testCloseBeforeDestroy"); |
| Process p = Runtime.getRuntime().exec(UnixCommands.cat()); |
| Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| true, false, latch); |
| Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| true, false, latch); |
| latch.await(); // Wait till both Copiers about to read |
| Thread.sleep(100);// Give both Copiers a chance to start read |
| |
| p.getInputStream().close(); |
| p.getErrorStream().close(); |
| p.destroy(); |
| System.err.println(" exit: " + p.waitFor()); |
| cp1.join(); |
| cp1.check(); |
| cp2.join(); |
| cp2.check(); |
| } |
| |
| static void testCloseAfterDestroy() throws Exception { |
| CountDownLatch latch = new CountDownLatch(2); |
| System.err.println("testCloseAfterDestroy"); |
| Process p = Runtime.getRuntime().exec(UnixCommands.cat()); |
| Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| true, false,latch); |
| Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| true, false, latch); |
| |
| latch.await(); // Wait till both Copiers about to read |
| Thread.sleep(100);// Give both Copiers a chance to start read |
| |
| p.destroy(); |
| p.getInputStream().close(); |
| p.getErrorStream().close(); |
| System.err.println(" exit: " + p.waitFor()); |
| cp1.join(); |
| cp1.check(); |
| cp2.join(); |
| cp2.check(); |
| } |
| |
| static void testInterrupt() throws Exception { |
| CountDownLatch latch = new CountDownLatch(2); |
| System.err.println("testInterrupt"); |
| Process p = Runtime.getRuntime().exec(UnixCommands.cat()); |
| Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| false, true, latch); |
| Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| false, true, latch); |
| latch.await(); // Wait till both Copiers about to read |
| Thread.sleep(100);// Give both Copiers a chance to start read |
| |
| cp1.interrupt(); |
| cp2.interrupt(); |
| Thread.sleep(100); |
| p.destroy(); |
| System.err.println(" exit: " + p.waitFor()); |
| cp1.join(); |
| cp1.check(); |
| cp2.join(); |
| cp2.check(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| |
| // Applies only to Solaris; |
| // Linux and Windows behave a little differently |
| if (! UnixCommands.isSunOS) { |
| System.out.println("For SunOS only"); |
| return; |
| } |
| UnixCommands.ensureCommandsAvailable("cat"); |
| |
| test(); |
| testCloseBeforeDestroy(); |
| testCloseAfterDestroy(); |
| testInterrupt(); |
| } |
| } |