1 /*
   2  * Copyright (c) 2014, 2015, 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 import java.io.IOException;
  25 import java.io.InputStream;
  26 import java.util.List;
  27 import java.util.Map;
  28 
  29 import jdk.testlibrary.ProcessTools;
  30 
  31 import com.sun.jdi.Bootstrap;
  32 import com.sun.jdi.ThreadReference;
  33 import com.sun.jdi.VirtualMachine;
  34 import com.sun.jdi.connect.AttachingConnector;
  35 import com.sun.jdi.connect.Connector;
  36 import com.sun.jdi.connect.IllegalConnectorArgumentsException;
  37 
  38 /**
  39  * @test
  40  * @bug 4527279
  41  * @summary Unit test for ProcessAttachingConnector
  42  *
  43  * @library /lib/testlibrary
  44  * @modules java.management
  45  *          jdk.jdi
  46  * @build jdk.testlibrary.* ProcessAttachTest
  47  * @run driver ProcessAttachTest
  48  */
  49 
  50 class ProcessAttachTestTarg {
  51     public static void main(String args[]) throws Exception {
  52         // Write something that can be read by the driver
  53         System.out.println("Debuggee started");
  54         System.out.flush();
  55         for (;;) {
  56             Thread.sleep(100);
  57         }
  58     }
  59 }
  60 
  61 public class ProcessAttachTest {
  62 
  63     public static final String TESTCLASSES = System.getProperty("test.classes");
  64 
  65     public static void main(String[] args) throws Exception {
  66 
  67         System.out.println("Test 1: Debuggee start with suspend=n");
  68         runTest("-agentlib:jdwp=transport=dt_socket,server=y,suspend=n");
  69 
  70         System.out.println("Test 2: Debuggee start with suspend=y");
  71         runTest("-agentlib:jdwp=transport=dt_socket,server=y,suspend=y");
  72 
  73     }
  74 
  75     private static void runTest(String jdwpArg) throws Exception {
  76         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  77                 jdwpArg,
  78                 "-classpath", TESTCLASSES,
  79                 "ProcessAttachTestTarg");
  80         Process p = null;
  81         try {
  82             p = pb.start();
  83 
  84             // Wait for the process to start
  85             InputStream is = p.getInputStream();
  86             is.read();
  87 
  88             // Attach a debugger
  89             tryDebug(p.getPid());
  90         } finally {
  91             p.destroyForcibly();
  92         }
  93     }
  94 
  95     private static void tryDebug(long pid) throws IOException,
  96             IllegalConnectorArgumentsException {
  97         AttachingConnector ac = Bootstrap.virtualMachineManager().attachingConnectors()
  98                 .stream()
  99                 .filter(c -> c.name().equals("com.sun.jdi.ProcessAttach"))
 100                 .findFirst()
 101                 .orElseThrow(() -> new RuntimeException("Unable to locate ProcessAttachingConnector"));
 102 
 103         Map<String, Connector.Argument> args = ac.defaultArguments();
 104         Connector.StringArgument arg = (Connector.StringArgument) args
 105                 .get("pid");
 106         arg.setValue("" + pid);
 107 
 108         System.out.println("Debugger is attaching to: " + pid + " ...");
 109         VirtualMachine vm = ac.attach(args);
 110 
 111         // list all threads
 112         System.out.println("Attached! Now listing threads ...");
 113         vm.allThreads().stream().forEach(System.out::println);
 114 
 115         System.out.println("Debugger done.");
 116         vm.dispose();
 117     }
 118 }