/*

 * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/**

 *  @test

 *  @bug 6700889

 *  @summary  Thread resume invalidates all stack frames, even from other threads

 *

 *  @author jjh

 *

 *  @run build TestScaffold VMConnection TargetListener TargetAdapter

 *  @run compile -g ResumeOneThreadTest.java

 *  @run main ResumeOneThreadTest

 */

import com.sun.jdi.*;

import com.sun.jdi.event.*;

import com.sun.jdi.request.*;

import java.util.*;

class ResumeOneThreadTarg extends Thread {

    static String name1 = "Thread 1";

    static String name2 = "Thread 2";

    public ResumeOneThreadTarg(String name) {

        super(name);

    }

    public static void main(String[] args) {

        System.out.println("    Debuggee: Howdy!");

        ResumeOneThreadTarg t1 = new ResumeOneThreadTarg(name1);

        ResumeOneThreadTarg t2 = new ResumeOneThreadTarg(name2);

        t1.start();

        t2.start();

    }

    // This just starts two threads. Each runs to a bkpt.

    public void run() {

        if (getName().equals(name1)) {

            run1();

        } else {

            run2();

        }

    }

    public void bkpt1(String p1) {

        System.out.println("    Debuggee: bkpt 1");

    }

    public void run1() {

        bkpt1("Hello Alviso!");

    }

    public void bkpt2() {

        System.out.println("    Debuggee: bkpt 2");

    }

    public void run2() {

        bkpt2();

    }

}

/********** test program **********/

public class ResumeOneThreadTest extends TestScaffold {

    ReferenceType targetClass;

    ThreadReference mainThread;

    BreakpointRequest request1;

    BreakpointRequest request2;

    ThreadReference thread1 = null;

    ThreadReference thread2 = null;;

    boolean theVMisDead = false;

    ResumeOneThreadTest (String args[]) {

        super(args);

    }

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

        new ResumeOneThreadTest(args).startTests();

    }

    synchronized public void breakpointReached(BreakpointEvent event) {

        println("-- Got bkpt at: " + event.location());

        ThreadReference eventThread = event.thread();

        if (eventThread.name().equals(ResumeOneThreadTarg.name1)) {

            thread1 = eventThread;

        }

        if (eventThread.name().equals(ResumeOneThreadTarg.name2)) {

            thread2 = eventThread;

        }

    }

    public void vmDied(VMDeathEvent event) {

        theVMisDead = true;

    }

    synchronized public void eventSetComplete(EventSet set) {

        if (theVMisDead) {

            return;

        }

        if (thread1 == null || thread2 == null) {

            // Don't do a set.resume(), just let the other thread

            // keep running until it hits its bkpt.

            return;

        }

        // Both threads are stopped at their bkpts.  Get a StackFrame from

        // Thread 1 then resume Thread 2 and verify that the saved StackFrame is

        // still valid.

        // suspend everything.

        println("-- All threads suspended");

        vm().suspend();

        StackFrame t1sf0 = null;

        try {

            t1sf0 = thread1.frame(0);

        } catch (IncompatibleThreadStateException ee) {

            failure("FAILED: Exception: " + ee);

        }

        println("-- t1sf0 args: " + t1sf0.getArgumentValues());

        // Ok, we have a StackFrame for thread 1.  Resume just thread 2

        // Note that thread 2 has been suspended twice - by the SUSPEND_ALL

        // bkpt, and by the above vm().suspend(), so we have to resume

        // it twice.

        request2.disable();

        thread2.resume();

        thread2.resume();

        println("-- Did Resume on thread 2");

        // Can we get frames for thread1?

        try {

            StackFrame t1sf0_1 = thread1.frame(0);

            if (!t1sf0.equals(t1sf0_1)) {

                failure("FAILED: Got a different frame 0 for thread 1 after resuming thread 2");

            }

        } catch (IncompatibleThreadStateException ee) {

            failure("FAILED: Could not get frames for thread 1: Exception: " + ee);

        } catch (Exception ee) {

            failure("FAILED: Could not get frames for thread 1: Exception: " + ee);

        }

        try {

            println("-- t1sf0 args: " + t1sf0.getArgumentValues());

        } catch (InvalidStackFrameException ee) {

            // This is the failure.

            failure("FAILED Got InvalidStackFrameException");

            vm().dispose();

            throw(ee);

        }

        // Let the debuggee finish

        request1.disable();

        thread1.resume();

        vm().resume();

        println("--------------");

    }

    /********** test core **********/

    protected void runTests() throws Exception {

        /*

         * Get to the top of main()

         * to determine targetClass and mainThread

         */

        BreakpointEvent bpe = startToMain("ResumeOneThreadTarg");

        targetClass = bpe.location().declaringType();

        mainThread = bpe.thread();

        EventRequestManager erm = vm().eventRequestManager();

        final Thread mainThread = Thread.currentThread();

        /*

         * Set event requests

         */

        Location loc1 = findMethod(targetClass, "bkpt1", "(Ljava/lang/String;)V").location();

        request1 = erm.createBreakpointRequest(loc1);

        request1.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);

        request1.enable();

        Location loc2 = findMethod(targetClass, "bkpt2", "()V").location();

        request2 = erm.createBreakpointRequest(loc2);

        request2.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);

        request2.enable();

        /*

         * resume the target, listening for events

         */

        listenUntilVMDisconnect();

        /*

         * deal with results of test

         * if anything has called failure("foo") testFailed will be true

         */

        if (!testFailed) {

            println("ResumeOneThreadTest: passed");

        } else {

            throw new Exception("ResumeOneThreadTest: failed");

        }

    }

}