1 /*
   2  * Copyright (c) 2016, 2019, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @summary Checks that the jshdb debugd utility sucessfully starts
  27  *          and tries to attach to a running process
  28  * @requires vm.hasSAandCanAttach
  29  * @modules java.base/jdk.internal.misc
  30  * @library /test/lib
  31  *
  32  * @run main/othervm SADebugDTest
  33  */
  34 
  35 import java.util.concurrent.TimeUnit;
  36 
  37 import jdk.test.lib.apps.LingeredApp;
  38 import jdk.test.lib.JDKToolLauncher;
  39 import static jdk.test.lib.process.ProcessTools.startProcess;
  40 
  41 public class SADebugDTest {
  42 
  43     private static final String GOLDEN = "Attaching to process";
  44 
  45     public static void main(String[] args) throws Exception {
  46         LingeredApp app = null;
  47 
  48         try {
  49             app = LingeredApp.startApp();
  50             System.out.println("Started LingeredApp with pid " + app.getPid());
  51 
  52             JDKToolLauncher jhsdbLauncher = JDKToolLauncher.createUsingTestJDK("jhsdb");
  53             jhsdbLauncher.addToolArg("debugd");
  54             jhsdbLauncher.addToolArg("--pid");
  55             jhsdbLauncher.addToolArg(Long.toString(app.getPid()));
  56             ProcessBuilder pb = new ProcessBuilder(jhsdbLauncher.getCommand());
  57 
  58             // The startProcess will block untl the 'golden' string appears in either process' stdout or stderr
  59             // In case of timeout startProcess kills the debugd process
  60             Process debugd = startProcess("debugd", pb, null, l -> l.contains(GOLDEN), 0, TimeUnit.SECONDS);
  61 
  62             // If we are here, this means we have received the golden line and the test has passed
  63             // The debugd remains running, we have to kill it
  64             debugd.destroy();
  65         } finally {
  66             if (app != null) {
  67                 LingeredApp.stopApp(app);
  68             }
  69         }
  70 
  71     }
  72 
  73 }