1 /*

     2  * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.

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

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

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

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 package jdk.test.lib.jfr;

    26 

    27 import java.util.ArrayList;

    28 import java.util.List;

    29 

    30 /**

    31  * Class to help run multiple threads executing some task

    32  *

    33  *

    34  * @since 1.9

    35  */

    36 public class Stressor {

    37     public static void execute(int numberOfThreads, Thread.UncaughtExceptionHandler eh, Runnable task) throws Exception {

    38         List<Thread> threads = new ArrayList<>();

    39         for (int n = 0; n < numberOfThreads; ++n) {

    40             Thread t = new Thread(task);

    41             t.setUncaughtExceptionHandler(eh);

    42             threads.add(t);

    43             t.start();

    44         }

    45         for (Thread t : threads) {

    46             t.join();

    47         }

    48     }

    49 }