/*

 * Copyright (c) 2005, 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.

 */

/*

 *

 *

 * Unit test for ProcessAttachingConnector - this "debugger" attaches to a debuggee

 * given it's pid. Usage:

 *

 *      java ProcessAttachDebugger <pid>

 */

import com.sun.jdi.Bootstrap;

import com.sun.jdi.VirtualMachine;

import com.sun.jdi.ThreadReference;

import com.sun.jdi.connect.Connector;

import com.sun.jdi.connect.AttachingConnector;

import java.util.List;

import java.util.Map;

public class ProcessAttachDebugger {

    public static void main(String main_args[]) throws Exception {

        String pid = main_args[0];

        // find ProcessAttachingConnector

        List<AttachingConnector> l =

            Bootstrap.virtualMachineManager().attachingConnectors();

        AttachingConnector ac = null;

        for (AttachingConnector c: l) {

            if (c.name().equals("com.sun.jdi.ProcessAttach")) {

                ac = c;

                break;

            }

        }

        if (ac == null) {

            throw new RuntimeException("Unable to locate ProcessAttachingConnector");

        }

        Map<String,Connector.Argument> args = ac.defaultArguments();

        Connector.StringArgument arg = (Connector.StringArgument)args.get("pid");

        arg.setValue(pid);

        System.out.println("Debugger is attaching to: " + pid + " ...");

        VirtualMachine vm = ac.attach(args);

        System.out.println("Attached! Now listing threads ...");

        // list all threads

        for (ThreadReference thr: vm.allThreads()) {

            System.out.println(thr);

        }

        System.out.println("Debugger done.");

    }

}