--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/ProcessBuilder/SiblingIOEHandle.java Thu Aug 08 09:16:16 2013 +0400
@@ -0,0 +1,205 @@
+/*
+ * 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 6921885
+ * @run main/othervm SiblingIOEHandle
+ * @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;
+import java.util.concurrent.BrokenBarrierException;
+import java.util.concurrent.CyclicBarrier;
+
+public class SiblingIOEHandle {
+ private static enum APP {
+ B, C;
+ }
+ private static File stopC = new File(".\\StopCs.txt");
+ private static String SIGNAL = "B child reported.";
+ 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"),
+ SiblingIOEHandle.class.getName(),
+ processName
+ };
+ return cmdArray;
+ }
+
+ public static void main(String[] args) {
+ if (!System.getProperty("os.name").startsWith("Windows")) {
+ return;
+ }
+
+ if (args.length > 0) {
+ APP app = APP.valueOf(args[0]);
+ switch (app) {
+ case B:
+ performB();
+ break;
+ case C:
+ performC();
+ break;
+ }
+ return;
+ }
+ performA(true);
+ performA(false);
+ }
+
+ static boolean procClaunched = false;
+
+ private static void waitAbit() {
+ try {
+ Thread.sleep(0);
+ } catch (InterruptedException ex) {
+ // that was long enough
+ }
+ }
+ private static boolean waitBarrier(CyclicBarrier barrier) {
+ while (true) try {
+ barrier.await();
+ return true;
+ } catch (InterruptedException ex) {
+ continue;
+ } catch (BrokenBarrierException ex) {
+ ex.printStackTrace();
+ return false;
+ }
+ }
+
+ private static void performA(boolean fileOut) {
+ try {
+ stopC.delete();
+ ProcessBuilder builderB = new ProcessBuilder(
+ getCommandArray(APP.B.name()));
+
+ File outB = null;
+ if (fileOut) {
+ outB = new File("outB.txt");
+ builderB.redirectOutput(outB);
+ }
+ builderB.redirectErrorStream(true);
+
+ final CyclicBarrier barrier = new CyclicBarrier(2);
+ Thread procCRunner = new Thread(new Runnable() {
+ @Override public void run() {
+ try {
+ if (waitBarrier(barrier)) {
+ waitAbit();
+ // Run process C next to B ASAP to make an attempt
+ // to capture the B-process IOE handles in C process.
+ Runtime.getRuntime().exec(getCommandArray(APP.C.name()));
+ procClaunched = true;
+ }
+ } catch (IOException ex) {
+ ex.printStackTrace();
+ }
+ }
+ });
+ procCRunner.start();
+
+
+ if (!waitBarrier(barrier)) {
+ throw new Error("Catastrophe in process A! Synchronization failed.");
+ }
+ // Run process B first.
+ Process processB = builderB.start();
+
+ while (true) try {
+ procCRunner.join();
+ break;
+ } catch (InterruptedException ex) {
+ continue;
+ }
+
+ if (!procClaunched) {
+ throw new Error("Catastrophe in process A! C was not launched.");
+ }
+
+ processB.getOutputStream().close();
+ processB.getErrorStream().close();
+
+ if (fileOut) {
+ try {
+ processB.waitFor();
+ } catch (InterruptedException ex) {
+ throw new Error("Catastrophe in process B! B hung up.");
+ }
+ System.err.println("Trying to delete [outB.txt].");
+ if (!outB.delete()) {
+ throw new Error("Greedy brother C deadlock! File share.");
+ }
+ System.err.println("Succeeded in delete [outB.txt].");
+ } else {
+ System.err.println("Read stream start.");
+ try (BufferedReader in = new BufferedReader( new InputStreamReader(
+ processB.getInputStream(), "utf-8")))
+ {
+ String result;
+ while ((result = in.readLine()) != null) {
+ if (!SIGNAL.equals(result)) {
+ throw new Error("Catastrophe in process B! Bad output.");
+ }
+ }
+ }
+ System.err.println("Read stream finished.");
+ }
+ // If JDK-6921885 is not fixed that point is unreachable.
+ // Test timeout exception.
+
+ // write signal file to stop C process.
+ stopC.createNewFile();
+ } catch (IOException ex) {
+ throw new Error("Catastrophe in process A!", ex);
+ }
+ }
+
+ private static void performB() {
+ System.out.println(SIGNAL);
+ }
+
+ 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);
+ // check for sucess
+ if (stopC.exists())
+ break;
+ } catch (InterruptedException ex) {
+ // that is ok. Longer sleep - better effect.
+ }
+ }
+ }
+}