/*

 * Copyright (c) 2001, 2018, 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.

 */

package nsk.jdi.EventQueue.remove_l;

import com.sun.jdi.VirtualMachine;

import com.sun.jdi.request.EventRequest;

import com.sun.jdi.VMDisconnectedException;

import com.sun.jdi.event.*;

import java.io.*;

import nsk.share.*;

import nsk.share.jpda.*;

import nsk.share.jdi.*;

/**

 * The test checks that a VMDisconnectedException thrown by

 * the JDI method <b>com.sun.jdi.request.EventQueue.remove(int)</b>

 * will be preceded by a <code>VMDisconnectEvent</code>

 * after <code>com.sun.jdi.VirtualMachine.exit()</code> call.

 */

public class remove_l003 {

    public static final int PASSED = 0;

    public static final int FAILED = 2;

    public static final int JCK_STATUS_BASE = 95;

    static final String DEBUGGEE_CLASS =

        "nsk.jdi.EventQueue.remove_l.remove_l003t";

    static final String COMMAND_READY = "ready";

    static final String COMMAND_QUIT = "quit";

    private ArgumentHandler argHandler;

    private Log log;

    private IOPipe pipe;

    private Debugee debuggee;

    private CheckEvents chkEvents;

    private EventQueue eventQ;

    private volatile int tot_res = FAILED;

    public static void main(String argv[]) {

        System.exit(run(argv,System.out) + JCK_STATUS_BASE);

    }

    public static int run(String argv[], PrintStream out) {

        return new remove_l003().runIt(argv, out);

    }

    private int runIt(String args[], PrintStream out) {

        argHandler = new ArgumentHandler(args);

        log = new Log(out, argHandler);

        Binder binder = new Binder(argHandler, log);

        debuggee = binder.bindToDebugee(DEBUGGEE_CLASS);

        debuggee.redirectStderr(log, "remove_l003t.err> ");

        pipe = debuggee.createIOPipe();

        VirtualMachine vm = debuggee.VM();

        eventQ = vm.eventQueue();

        chkEvents = new CheckEvents();

        chkEvents.setDaemon(true);

        chkEvents.start();

        debuggee.resume();

        String cmd = pipe.readln();

        if (!cmd.equals(COMMAND_READY)) {

            log.complain("TEST BUG: unknown debuggee's command: " + cmd);

            tot_res = FAILED;

            return quitDebuggee(FAILED);

        }

        log.display("Invoking VirtualMachine.exit() ...");

        vm.exit(JCK_STATUS_BASE + PASSED);

        return quitDebuggee(PASSED);

    }

    class CheckEvents extends Thread {

        public void run() {

            boolean gotVMDisconnect = false; // VMDisconnectEvent is received

            boolean gotVMDeath = false; // VMDeathEvent is received

            EventSet eventSet = null;

            log.display("CheckEvents: starts JDI events processing");

            while (true) {

                try {

                    eventSet = eventQ.remove(argHandler.getWaitTime()*30000);

                    if (eventSet == null) {

                        log.display("CheckEvents: specified time for the next available event has elapsed");

                        continue;

                    }

                    EventIterator eventIter = eventSet.eventIterator();

                    while (eventIter.hasNext()) {

                        Event event = eventIter.nextEvent();

                        if (event instanceof VMDisconnectEvent) {

                            gotVMDisconnect = true;

                            log.display("CheckEvents: got expected VMDisconnectEvent");

                            break;

                        } else if (event instanceof VMStartEvent) {

                            log.display("CheckEvents: got VMStartEvent");

                        } else if (event instanceof VMDeathEvent) {

                            gotVMDeath = true;

                            log.display("CheckEvents: got VMDeathEvent");

                        }

                        if (!gotVMDisconnect && !gotVMDeath &&

                                eventSet.suspendPolicy() !=

                                    EventRequest.SUSPEND_NONE) {

                            log.display("CheckEvents: calling EventSet.resume() ...");

                            eventSet.resume();

                        }

                    }

                } catch(InterruptedException e) {

                    log.complain("TEST INCOMPLETE: caught " + e);

                    tot_res = FAILED;

                } catch(VMDisconnectedException e) {

                    if (gotVMDisconnect) {

                        log.display("\nCHECK PASSED: caught expected VMDisconnectedException preceded by a VMDisconnectEvent\n");

                        tot_res = PASSED;

                    } else {

                        log.complain("\nTEST FAILED: caught VMDisconnectedException without preceding VMDisconnectEvent\n");

                        e.printStackTrace();

                        tot_res = FAILED;

                    }

                    break;

                }

            }

            log.display("CheckEvents: stopped JDI events processing");

        }

    }

    private int quitDebuggee(int stat) {

        if (chkEvents != null) {

            try {

                if (chkEvents.isAlive())

                    chkEvents.join(argHandler.getWaitTime()*60000);

            } catch (InterruptedException e) {

                log.complain("TEST INCOMPLETE: caught InterruptedException "

                    + e);

                tot_res = FAILED;

            }

            if (chkEvents.isAlive()) {

                if (stat == PASSED) {

                    log.complain("TEST FAILED: CheckEvents thread is still alive,\n"

                        + "\tbut it should stop JDI events processing and exit");

                    chkEvents.interrupt();

                    tot_res = FAILED;

                }

            }

        }

//        pipe.println(COMMAND_QUIT);

        debuggee.waitFor();

        int debStat = debuggee.getStatus();

        if (debStat != (JCK_STATUS_BASE + PASSED)) {

            log.complain("TEST FAILED: debuggee's process finished with status: "

                + debStat);

            tot_res = FAILED;

        } else

            log.display("Debuggee's process finished with status: "

                + debStat);

        return tot_res;

    }

}