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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * under the terms of the GNU General Public License version 2 only, as

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 *

 * 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).

 *

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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 HandshakeWalkExitTest

 * @summary This test tries to stress the handshakes with new and exiting threads

 * @library /testlibrary /test/lib

 * @build HandshakeWalkExitTest

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

 */

import jdk.test.lib.Asserts;

import sun.hotspot.WhiteBox;

public class HandshakeWalkExitTest  implements Runnable {

    @Override

    public void run() {

    }

    static volatile boolean exit_now = false;

    public static void main(String... args) throws Exception {

        int testRuns = 20;

        int testThreads = 128;

        HandshakeWalkExitTest test = new HandshakeWalkExitTest();

        Runnable hser = new Runnable(){

            public void run(){

                WhiteBox wb = WhiteBox.getWhiteBox();

                while(!exit_now) {

                    wb.handshakeWalkStack(null, true);

                }

            }

        };

        Thread hst = new Thread(hser);

        hst.start();

        for (int k = 0; k<testRuns ; k++) {

            Thread[] threads = new Thread[testThreads];

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

                threads[i] = new Thread(test);

                threads[i].start();

            }

        }

        exit_now = true;

        hst.join();

    }

}