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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 */

/*
 * @test
 *
 * @bug 8167108 8266130
 * @summary converted from VM Testbase nsk/monitoring/ThreadInfo/isSuspended/issuspended002.
 * VM Testbase keywords: [quick, monitoring]
 * VM Testbase readme:
 * DESCRIPTION
 *     Same test as issuspended001 with additional calls to
 *     ThreadInfo.isSuspended() as the worker thread is exiting.
 * COMMENT
 *     Derived from nsk/monitoring/ThreadInfo/isSuspended/issuspended001.
 *
 * @library /vmTestbase
 *          /test/lib
 *          /testlibrary
 * @run main/othervm nsk.monitoring.ThreadInfo.isSuspended.issuspended002
 */

package nsk.monitoring.ThreadInfo.isSuspended;

import java.lang.management.*;
import java.io.*;
import nsk.share.*;

import jvmti.JVMTIUtils;

public class issuspended002 {
    private final static int DEF_TIME_MAX = 30;  // default max # secs to test
    private final static String PROG_NAME = "issuspended002";

    private static Wicket mainEntrance;
    private static boolean testFailed = false;
    private static Object waiter = new Object();

    public static void main(String[] argv) {
        System.exit(Consts.JCK_STATUS_BASE + run(argv, System.out));
    }

    public static int run(String[] argv, PrintStream out) {
        int timeMax = 0;
        if (argv.length == 0) {
            timeMax = DEF_TIME_MAX;
        } else {
            try {
                timeMax = Integer.parseUnsignedInt(argv[0]);
            } catch (NumberFormatException nfe) {
                System.err.println("'" + argv[0] + "': invalid timeMax value.");
                usage();
            }
        }

        System.out.println("About to execute for " + timeMax + " seconds.");

        long count = 0;
        ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
        long start_time = System.currentTimeMillis();
        while (System.currentTimeMillis() < start_time + (timeMax * 1000)) {
            count++;

            MyThread thread = new MyThread(out);
            mainEntrance = new Wicket();
            thread.start();

            // Wait for MyThread to start
            mainEntrance.waitFor();

            long id = thread.getId();
            ThreadInfo info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
            boolean isSuspended = info.isSuspended();
            if (isSuspended) {
                out.println("Failure 1.");
                out.println("ThreadInfo.isSuspended() returned true, before "
                            + "Thread.suspend() was invoked.");
                testFailed = true;
                break;
            }

            JVMTIUtils.suspendThread(thread);
            info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
            isSuspended = info.isSuspended();
            if (!isSuspended) {
                out.println("Failure 2.");
                out.println("ThreadInfo.isSuspended() returned false, after "
                            + "Thread.suspend() was invoked.");
                testFailed = true;
                break;
            }

            JVMTIUtils.resumeThread(thread);
            info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
            isSuspended = info.isSuspended();
            if (isSuspended) {
                out.println("Failure 3.");
                out.println("ThreadInfo.isSuspended() returned true, after "
                            + "Thread.resume() was invoked.");
                testFailed = true;
                break;
            }

            synchronized (waiter) {
                thread.die = true;
                waiter.notifyAll();
            }

            while (true) {
                info = mbean.getThreadInfo(id, Integer.MAX_VALUE);
                if (info == null) {
                    // the thread has exited
                    break;
                }
                isSuspended = info.isSuspended();
                if (isSuspended) {
                    out.println("Failure 4.");
                    out.println("ThreadInfo.isSuspended() returned true, after "
                                + "thread.die was set to true.");
                    testFailed = true;
                    break;
                }
            }
        }

        System.out.println("Executed " + count + " loops in " + timeMax +
                           " seconds.");

        if (testFailed)
            out.println("TEST FAILED");
        return (testFailed) ? Consts.TEST_FAILED : Consts.TEST_PASSED;
    }

    public static void usage() {
        System.err.println("Usage: " + PROG_NAME + " [time_max]");
        System.err.println("where:");
        System.err.println("    time_max  max looping time in seconds");
        System.err.println("              (default is " + DEF_TIME_MAX +
                           " seconds)");
        System.exit(1);
    }

    private static class MyThread extends Thread {
        final static long WAIT_TIME = 10; // Milliseconds
        volatile boolean die = false;
        PrintStream out;

        MyThread(PrintStream out) {
            this.out = out;
        }

        public void run() {

            // Notify "main" thread that MyThread has started
            mainEntrance.unlock();

            while (!die) {
                synchronized(waiter) {
                    try {
                        waiter.wait(WAIT_TIME);
                    } catch (InterruptedException e) {
                        out.println("Unexpected exception.");
                        e.printStackTrace(out);
                        testFailed = true;
                        break;
                    }
                } // synchronized
            }
        } // run()
    } // MyThread
}