/*

 * Copyright (c) 2017, 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

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 */

import java.io.File;

import java.nio.file.Paths;

import java.time.Duration;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

import sun.hotspot.WhiteBox;

/*

 * @test HandshakeTransitionTest

 * @summary This does a sanity test of the poll in the native wrapper.

 * @requires vm.debug

 * @library /testlibrary /test/lib

 * @build HandshakeTransitionTest

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI HandshakeTransitionTest

 */

public class HandshakeTransitionTest {

    public static native void someTime(int ms);

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

        String lib = System.getProperty("test.nativepath");

        WhiteBox wb = WhiteBox.getWhiteBox();

        Boolean useJVMCICompiler = wb.getBooleanVMFlag("UseJVMCICompiler");

        String useJVMCICompilerStr;

        if (useJVMCICompiler != null) {

            useJVMCICompilerStr = useJVMCICompiler ?  "-XX:+UseJVMCICompiler" : "-XX:-UseJVMCICompiler";

        } else {

            // pass something innocuous

            useJVMCICompilerStr = "-XX:+UnlockExperimentalVMOptions";

        }

        ProcessBuilder pb =

            ProcessTools.createJavaProcessBuilder(

                    true,

                    "-Djava.library.path=" + lib,

                    "-XX:+SafepointALot",

                    "-XX:GuaranteedSafepointInterval=20",

                    "-Xlog:ergo*",

                    "-XX:ParallelGCThreads=1",

                    "-XX:ConcGCThreads=1",

                    "-XX:CICompilerCount=2",

                    "-XX:+UnlockExperimentalVMOptions",

                    useJVMCICompilerStr,

                    "HandshakeTransitionTest$Test");

        OutputAnalyzer output = ProcessTools.executeProcess(pb);

        output.reportDiagnosticSummary();

        output.shouldHaveExitValue(0);

        output.stdoutShouldContain("JOINED");

    }

    static class Test implements Runnable {

        final static int testLoops = 2000;

        final static int testSleep = 1; //ms

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

            System.loadLibrary("HandshakeTransitionTest");

            Test test = new Test();

            Thread[] threads = new Thread[64];

            for (int i = 0; i<threads.length ; i++) {

                threads[i] = new Thread(test);

                threads[i].start();

            }

            for (Thread t : threads) {

                t.join();

            }

            System.out.println("JOINED");

        }

        @Override

        public void run() {

            try {

                for (int i = 0; i<testLoops ; i++) {

                    someTime(testSleep);

                }

            } catch (Exception e) {

                System.out.println(e.getMessage());

                System.exit(1);

            }

        }

    }

}