J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | * @bug 4820217 |
| 26 | * @summary Ensure that pending reads on stdout and stderr streams |
| 27 | * return -1 when the process is destroyed |
| 28 | */ |
| 29 | |
| 30 | import java.io.*; |
| 31 | |
| 32 | |
| 33 | public class StreamsSurviveDestroy { |
| 34 | |
| 35 | private static class Copier extends Thread { |
| 36 | |
| 37 | String name; |
| 38 | InputStream in; |
| 39 | OutputStream out; |
| 40 | boolean wantInterrupt; |
| 41 | boolean acceptException; |
| 42 | Exception exc = null; |
| 43 | |
| 44 | Copier(String name, InputStream in, OutputStream out, |
| 45 | boolean ae, boolean wi) |
| 46 | { |
| 47 | this.name = name; |
| 48 | this.in = in; |
| 49 | this.out = out; |
| 50 | this.acceptException = ae; |
| 51 | this.wantInterrupt = wi; |
| 52 | setName(name); |
| 53 | start(); |
| 54 | } |
| 55 | |
| 56 | private void log(String s) { |
| 57 | System.err.println(" " + name + ": " + s); |
| 58 | } |
| 59 | |
| 60 | public void run() { |
| 61 | byte[] buf = new byte[4242]; |
| 62 | for (;;) { |
| 63 | try { |
| 64 | int n = in.read(buf); |
| 65 | if (n < 0) { |
| 66 | System.err.println(" EOF"); |
| 67 | break; |
| 68 | } |
| 69 | out.write(buf, 0, n); |
| 70 | } catch (IOException x) { |
| 71 | if (wantInterrupt) { |
| 72 | if (x instanceof InterruptedIOException) { |
| 73 | log("Interrupted as expected"); |
| 74 | return; |
| 75 | } |
| 76 | exc = new Exception(name |
| 77 | + ": Not interrupted as expected"); |
| 78 | return; |
| 79 | } |
| 80 | exc = x; |
| 81 | if (acceptException) { |
| 82 | log("Thrown, but okay: " + x); |
| 83 | return; |
| 84 | } |
| 85 | return; |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | public void check() throws Exception { |
| 91 | if (!acceptException && exc != null) |
| 92 | throw new Exception(name + ": Exception thrown", exc); |
| 93 | } |
| 94 | |
| 95 | } |
| 96 | |
| 97 | static void test() throws Exception { |
| 98 | System.err.println("test"); |
| 99 | Process p = Runtime.getRuntime().exec("/bin/cat"); |
| 100 | Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| 101 | false, false); |
| 102 | Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| 103 | false, false); |
| 104 | Thread.sleep(100); |
| 105 | p.destroy(); |
| 106 | System.err.println(" exit: " + p.waitFor()); |
| 107 | cp1.join(); |
| 108 | cp1.check(); |
| 109 | cp2.join(); |
| 110 | cp2.check(); |
| 111 | } |
| 112 | |
| 113 | static void testCloseBeforeDestroy() throws Exception { |
| 114 | System.err.println("testCloseBeforeDestroy"); |
| 115 | Process p = Runtime.getRuntime().exec("/bin/cat"); |
| 116 | Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| 117 | true, false); |
| 118 | Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| 119 | true, false); |
| 120 | Thread.sleep(100); |
| 121 | p.getInputStream().close(); |
| 122 | p.getErrorStream().close(); |
| 123 | p.destroy(); |
| 124 | System.err.println(" exit: " + p.waitFor()); |
| 125 | cp1.join(); |
| 126 | cp1.check(); |
| 127 | cp2.join(); |
| 128 | cp2.check(); |
| 129 | } |
| 130 | |
| 131 | static void testCloseAfterDestroy() throws Exception { |
| 132 | System.err.println("testCloseAfterDestroy"); |
| 133 | Process p = Runtime.getRuntime().exec("/bin/cat"); |
| 134 | Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| 135 | true, false); |
| 136 | Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| 137 | true, false); |
| 138 | Thread.sleep(100); |
| 139 | p.destroy(); |
| 140 | p.getInputStream().close(); |
| 141 | p.getErrorStream().close(); |
| 142 | System.err.println(" exit: " + p.waitFor()); |
| 143 | cp1.join(); |
| 144 | cp1.check(); |
| 145 | cp2.join(); |
| 146 | cp2.check(); |
| 147 | } |
| 148 | |
| 149 | static void testInterrupt() throws Exception { |
| 150 | System.err.println("testInterrupt"); |
| 151 | Process p = Runtime.getRuntime().exec("/bin/cat"); |
| 152 | Copier cp1 = new Copier("out", p.getInputStream(), System.err, |
| 153 | false, true); |
| 154 | Copier cp2 = new Copier("err", p.getErrorStream(), System.err, |
| 155 | false, true); |
| 156 | Thread.sleep(100); |
| 157 | cp1.interrupt(); |
| 158 | cp2.interrupt(); |
| 159 | Thread.sleep(100); |
| 160 | p.destroy(); |
| 161 | System.err.println(" exit: " + p.waitFor()); |
| 162 | cp1.join(); |
| 163 | cp1.check(); |
| 164 | cp2.join(); |
| 165 | cp2.check(); |
| 166 | } |
| 167 | |
| 168 | public static void main(String[] args) throws Exception { |
| 169 | |
| 170 | // Applies only to Solaris; Linux and Windows |
| 171 | // behave a little differently |
| 172 | if (!System.getProperty("os.name").equals("SunOS")) |
| 173 | return; |
| 174 | |
| 175 | test(); |
| 176 | testCloseBeforeDestroy(); |
| 177 | testCloseAfterDestroy(); |
| 178 | testInterrupt(); |
| 179 | |
| 180 | } |
| 181 | |
| 182 | } |