jdk/test/java/lang/Runtime/exec/CloseRace.java
changeset 22626 758d413359c4
parent 22625 50ee5cbd439b
child 22627 93f110be9439
--- a/jdk/test/java/lang/Runtime/exec/CloseRace.java	Fri Jan 31 11:10:36 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,146 +0,0 @@
-/*
- * 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 8024521
- * @summary Closing ProcessPipeInputStream at the time the process exits is racy
- *          and leads to the data corruption.
- * @library /lib/testlibrary
- * @run main/othervm/timeout=80 CloseRace
- */
-
-/**
- * This test has a little chance to catch the race during the given default
- * time gap of 20 seconds. To increase the time gap, set the system property
- * CloseRaceTimeGap=N to the number of seconds.
- * Jtreg's timeoutFactor should also be set appropriately.
- *
- * For example, to run the test for 10 minutes:
- * > jtreg \
- *       -testjdk:$(PATH_TO_TESTED_JDK) \
- *       -timeoutFactor:10 \
- *       -DCloseRaceTimeGap=600 \
- *       $(PATH_TO_TESTED_JDK_SOURCE)/test/java/lang/Runtime/exec/CloseRace.java
- */
-
-import java.io.*;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.LinkedList;
-import java.util.List;
-import jdk.testlibrary.OutputAnalyzer;
-import static jdk.testlibrary.ProcessTools.*;
-
-public class CloseRace {
-
-    public static void main(String args[]) throws Exception {
-        ProcessBuilder pb = createJavaProcessBuilder("-Xmx64M", "CloseRace$Child",
-                System.getProperty("CloseRaceTimeGap", "20"));
-        OutputAnalyzer oa = new OutputAnalyzer(pb.start());
-        oa.stderrShouldNotContain("java.lang.OutOfMemoryError");
-    }
-
-    public static class Child {
-        private static final String BIG_FILE = "bigfile";
-        private static final String SMALL_FILE = "smallfile";
-        private static int timeGap = 20; // seconds
-
-        public static void main(String args[]) throws Exception {
-            if (args.length > 0) {
-                try {
-                    timeGap = Integer.parseUnsignedInt(args[0]);
-                    timeGap = Integer.max(timeGap, 10);
-                    timeGap = Integer.min(timeGap, 10 * 60 * 60); // no more than 10 hours
-                } catch (NumberFormatException ignore) {}
-            }
-            try (RandomAccessFile f = new RandomAccessFile(BIG_FILE, "rw")) {
-                f.setLength(1024 * 1024 * 1024); // 1 Gb, greater than max heap size
-            }
-            try (FileOutputStream fs = new FileOutputStream(SMALL_FILE);
-                 PrintStream ps = new PrintStream(fs)) {
-                for (int i = 0; i < 128; ++i)
-                    ps.println("line of text");
-            }
-
-            List<Thread> threads = new LinkedList<>();
-            for (int i = 0; i < 99; ++i) {
-                Thread t = new Thread (new OpenLoop());
-                t.start();
-                threads.add(t);
-            }
-            Thread t2 = new Thread (new ExecLoop());
-            t2.start();
-            threads.add(t2);
-
-            Thread.sleep(timeGap);
-
-            for (Thread t : threads) {
-                t.interrupt();
-                t.join();
-            }
-        }
-
-        private static class OpenLoop implements Runnable {
-            public void run() {
-                final Path bigFilePath = Paths.get(BIG_FILE);
-                while (!Thread.interrupted()) {
-                    try (InputStream in = Files.newInputStream(bigFilePath)) {
-                        // Widen the race window by sleeping 1ms
-                        Thread.sleep(1);
-                    } catch (InterruptedException e) {
-                        break;
-                    } catch (Exception e) {
-                        System.err.println(e);
-                    }
-                }
-            }
-        }
-
-        private static class ExecLoop implements Runnable {
-            public void run() {
-                List<String> command = new ArrayList<>(
-                        Arrays.asList("/bin/cat", SMALL_FILE));
-                while (!Thread.interrupted()) {
-                    try {
-                        ProcessBuilder builder = new ProcessBuilder(command);
-                        final Process process = builder.start();
-                        InputStream is = process.getInputStream();
-                        InputStreamReader isr = new InputStreamReader(is);
-                        BufferedReader br = new BufferedReader(isr);
-                        while (br.readLine() != null) {}
-                        process.waitFor();
-                        isr.close();
-                    } catch (InterruptedException e) {
-                        break;
-                    } catch (Exception e) {
-                        System.err.println(e);
-                    }
-                }
-            }
-        }
-    }
-}