| /* |
| * Copyright (c) 2013, 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 7147084 |
| * @run main/othervm InheritIOEHandle |
| * @summary inherit IOE handles and MS CreateProcess limitations (kb315939) |
| */ |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| |
| public class InheritIOEHandle { |
| private static enum APP { |
| A, B, C; |
| } |
| |
| private static File stopC = new File("StopC.txt"); |
| private static String SIGNAL = "After call child process"; |
| private static String JAVA_EXE = System.getProperty("java.home") |
| + File.separator + "bin" |
| + File.separator + "java"; |
| |
| private static String[] getCommandArray(String processName) { |
| String[] cmdArray = { |
| JAVA_EXE, |
| "-cp", |
| System.getProperty("java.class.path"), |
| InheritIOEHandle.class.getName(), |
| processName |
| }; |
| return cmdArray; |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if (!System.getProperty("os.name").startsWith("Windows")) { |
| return; |
| } |
| |
| APP app = (args.length > 0) ? APP.valueOf(args[0]) : APP.A; |
| switch (app) { |
| case A: |
| performA(); |
| break; |
| case B: |
| performB(); |
| break; |
| case C: |
| performC(); |
| break; |
| } |
| } |
| |
| private static void performA() { |
| try { |
| stopC.delete(); |
| |
| ProcessBuilder builder = new ProcessBuilder( |
| getCommandArray(APP.B.name())); |
| builder.redirectErrorStream(true); |
| |
| Process process = builder.start(); |
| |
| process.getOutputStream().close(); |
| process.getErrorStream().close(); |
| |
| boolean isSignalReceived = false; |
| try (BufferedReader in = new BufferedReader(new InputStreamReader( |
| process.getInputStream(), "utf-8"))) |
| { |
| String result; |
| while ((result = in.readLine()) != null) { |
| if (SIGNAL.equals(result)) { |
| isSignalReceived = true; |
| break; |
| } else { |
| throw new RuntimeException("Catastrophe in process B! Bad output."); |
| } |
| } |
| |
| } |
| if (!isSignalReceived) { |
| throw new RuntimeException("Signal from B was not received"); |
| } |
| |
| // If JDK-7147084 is not fixed that point is unreachable. |
| System.out.println("Received signal from B, creating file StopC"); |
| // write signal file |
| boolean isFileStopC = stopC.createNewFile(); |
| if (!isFileStopC) { |
| throw new RuntimeException("Signal file StopC.txt was not created. TEST or INFRA bug"); |
| } |
| |
| process.waitFor(); |
| |
| System.err.println("Read stream finished."); |
| } catch (IOException ex) { |
| throw new RuntimeException("Catastrophe in process A!", ex); |
| } catch (InterruptedException ex) { |
| throw new RuntimeException("A was interrupted while waiting for B", ex); |
| } |
| } |
| |
| private static void performB() { |
| try { |
| ProcessBuilder builder = new ProcessBuilder( |
| getCommandArray(APP.C.name())); |
| |
| Process process = builder.start(); |
| |
| process.getInputStream().close(); |
| process.getOutputStream().close(); |
| process.getErrorStream().close(); |
| |
| System.out.println(SIGNAL); |
| process.waitFor(); |
| |
| // JDK-7147084 subject: |
| // Process C inherits the [System.out] handle and |
| // handle close in B does not finalize the streaming for A. |
| // (handle reference count > 1). |
| } catch (IOException ex) { |
| throw new RuntimeException("Catastrophe in process B!", ex); |
| } catch (InterruptedException ex) { |
| throw new RuntimeException("B was interrupted while waiting for C", ex); |
| } |
| } |
| |
| private static void performC() { |
| // If JDK-7147084 is not fixed the loop is 5min long. |
| for (int i = 0; i < 5 * 60; ++i) { |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException ex) { |
| // that is ok. Longer sleep - better effect. |
| } |
| // check for success |
| if (stopC.exists()) { |
| break; |
| } |
| } |
| } |
| } |