| /* |
| * Copyright (c) 2014, 2015, 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 8035668 |
| * @library /lib/testlibrary |
| * @summary Test checks case when target application finishes execution and jstat didn't complete work. |
| jstat is started with interval = 100 (jstat -compiler 100) and monitored application finishes |
| after 500ms. This shouldn't cause crash or hang in target application or in jstat. |
| * @modules java.management |
| * @build jdk.testlibrary.* JStatInterval |
| * @run main JStatInterval |
| */ |
| |
| import jdk.testlibrary.ProcessTools; |
| import jdk.testlibrary.JDKToolLauncher; |
| |
| import java.io.BufferedReader; |
| import java.io.InputStreamReader; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| public class JStatInterval { |
| private static final String READY = "READY"; |
| private static final String ERROR = "!ERROR"; |
| |
| public static class Application { |
| public static void main(String[] args) { |
| try { |
| System.out.println(READY); |
| System.out.flush(); |
| int exitCode = System.in.read(); |
| Thread.sleep(500); |
| System.exit(exitCode); |
| } catch (Exception e) { |
| System.out.println(ERROR); |
| System.out.flush(); |
| throw new Error(e); |
| } |
| } |
| } |
| public static void main(String[] args) throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-cp", |
| System.getProperty("test.class.path"), |
| "-XX:+UsePerfData", |
| Application.class.getName() |
| ); |
| AtomicBoolean error = new AtomicBoolean(false); |
| Process app = ProcessTools.startProcess( |
| "application", |
| pb, |
| line -> { |
| if (line.equals(READY)) { |
| return true; |
| } else if (line.equals(ERROR)) { |
| error.set(true); |
| return true; |
| } |
| return false; |
| }, |
| 10, |
| TimeUnit.SECONDS |
| ); |
| if (error.get()) { |
| throw new Error("Unable to start the monitored application."); |
| } |
| |
| String pidStr = String.valueOf(app.getPid()); |
| JDKToolLauncher l = JDKToolLauncher.createUsingTestJDK("jstat"); |
| l.addToolArg("-compiler"); |
| l.addToolArg(pidStr); |
| l.addToolArg("100"); |
| |
| ProcessBuilder jstatDef = new ProcessBuilder(l.getCommand()); |
| Process jstat = ProcessTools.startProcess( |
| "jstat", |
| jstatDef, |
| line -> { |
| if (line.trim().toLowerCase().startsWith("compiled")) { |
| return true; |
| } |
| return false; |
| }, |
| 10, |
| TimeUnit.SECONDS |
| ); |
| |
| app.getOutputStream().write(0); |
| app.getOutputStream().flush(); |
| |
| if (app.waitFor() != 0) { |
| throw new Error("Error detected upon exiting the monitored application with active jstat"); |
| } |
| if (jstat.waitFor() != 0) { |
| throw new Error("Error detected in jstat when monitored application has exited prematurely"); |
| } |
| } |
| } |