#!/bin/sh

#

# 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.

#

#  @test

#  @bug 6224859

#  @summary JDWP: Mixing application suspends and debugger suspends can cause hangs

# 

#  @author Jim Holmlund

# 

#  @run build TestScaffold VMConnection TargetListener TargetAdapter

#  @run shell MixedSuspendTest.sh

classname=MixedSuspendTarg

createJavaFile()

{

    cat <<EOF > $classname.java.1

import java.util.*;

public class $classname extends Thread {

    static volatile boolean started = true;

    static String lock = "startLock";

    public static void main(String[] args){

        System.out.println("Howdy from MixedSuspendTarg");

        MixedSuspendTarg mytarg = new MixedSuspendTarg();

        synchronized(lock) {

            mytarg.start();

            try {

                lock.wait();

            } catch(InterruptedException ee) {

            }

        }

        mytarg.suspend();

        bkpt();

        System.out.println("Debuggee: resuming thread");

        // If the bug occurs, this resume hangs in the back-end

        mytarg.resume();

        System.out.println("Debuggee: resumed thread");

        synchronized(lock) {

            started = false;

        }

        System.out.println("Debuggee: exitting, started = " + started);

    }

    public void run() {

        synchronized(lock) {

            lock.notifyAll();

        }

        while (true) {

            synchronized(lock) {

                if (!started) {

                    break;

                }

                int i = 0;

            }

        }

        System.out.println("Debuggee: end of thread");

    }

    static void bkpt() {

        //System.out.println("bkpt reached, thread = " + this.getName());

        int i = 0;   // @1 breakpoint

    }

}

EOF

}

dojdbCmds()

{

    setBkpts @1

    runToBkpt @1

    cmd cont

    cmd quit

}

mysetup()

{

    if [ -z "$TESTSRC" ] ; then

        TESTSRC=.

    fi

    for ii in . $TESTSRC $TESTSRC/.. ; do

        if [ -r "$ii/ShellScaffold.sh" ] ; then

            . $ii/ShellScaffold.sh 

            break

        fi

    done

}

# You could replace this next line with the contents

# of ShellScaffold.sh and this script will run just the same.

mysetup

runit

## This test fails by timing out.

pass