1 /*
   2  * Copyright (c) 2016, 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  * @modules java.base/jdk.internal.misc
  29  * @library /test/lib
  30  *
  31  * @ignore 8163805
  32  * @run main/othervm SADebugDTest
  33  */
  34 import java.io.File;
  35 import java.util.concurrent.CountDownLatch;
  36 import java.io.InputStreamReader;
  37 import java.io.BufferedReader;
  38 import java.io.Reader;
  39 import java.util.concurrent.TimeUnit;
  40 import java.util.function.Predicate;
  41 import static jdk.test.lib.Asserts.assertTrue;
  42 import static jdk.test.lib.Platform.shouldSAAttach;
  43 import static jdk.test.lib.process.ProcessTools.startProcess;
  44 
  45 public class SADebugDTest {
  46 
  47     private static final String GOLDEN = "Attaching to process ID %d and starting RMI services, please wait...";
  48 
  49     private static final String JAVA_HOME = (System.getProperty("test.jdk") != null)
  50             ? System.getProperty("test.jdk") : System.getProperty("java.home");
  51 
  52     private static final String JAVA_BIN_DIR
  53             = JAVA_HOME + File.separator + "bin" + File.separator;
  54 
  55     private static final String JHSDB = JAVA_BIN_DIR + "jhsdb";
  56 
  57     public static void main(String[] args) throws Exception {
  58 
  59         if (!shouldSAAttach()) {
  60             log("Not possible to attach the SA. Skipping the test");
  61             return;
  62         }
  63 
  64         long ourPid = ProcessHandle.current().getPid();
  65 
  66         // The string we are expecting in the debugd ouput
  67         String golden = String.format(GOLDEN, ourPid);
  68 
  69         // We are going to run 'jhsdb debugd <our pid>'
  70         // The startProcess will block untl the 'golden' string appears in either process' stdout or stderr
  71         // In case of timeout startProcess kills the debugd process
  72         ProcessBuilder pb = new ProcessBuilder();
  73         pb.command(JHSDB, "debugd", String.valueOf(ourPid));
  74         Process debugd = startProcess("debugd", pb, null, (line) -> line.trim().contains(golden), 0, TimeUnit.SECONDS);
  75 
  76         // If we are here, this means we have received the golden line and the test has passed
  77         // The debugd remains running, we have to kill it
  78         debugd.destroy();
  79 
  80     }
  81 
  82     private static void log(String string) {
  83         System.out.println(string);
  84     }
  85 
  86 }