1 /*
   2  * Copyright (c) 2015, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8137167
  27  * @summary Tests jcmd to be able to add a lot of huge directive files with
  28  *          parallel executed jcmds until timeout has reached
  29  * @modules java.base/jdk.internal.misc
  30  * @library /test/lib /
  31  *
  32  * @build sun.hotspot.WhiteBox
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run driver compiler.compilercontrol.jcmd.StressAddMultiThreadedTest
  36  */
  37 
  38 package compiler.compilercontrol.jcmd;
  39 
  40 import jdk.test.lib.dcmd.PidJcmdExecutor;
  41 
  42 import java.util.concurrent.ArrayBlockingQueue;
  43 import java.util.concurrent.BlockingQueue;
  44 import java.util.concurrent.ExecutorService;
  45 import java.util.concurrent.ThreadPoolExecutor;
  46 import java.util.concurrent.TimeUnit;
  47 
  48 public class StressAddMultiThreadedTest extends StressAddJcmdBase {
  49     private static final int THREADS = Integer.getInteger(
  50             "compiler.compilercontrol.jcmd.StressAddMultiThreadedTest.threads",
  51             5);
  52     private volatile int commands = Integer.getInteger(
  53             "compiler.compilercontrol.jcmd.StressAddMultiThreadedTest.commands",
  54             20);
  55     private final BlockingQueue<Runnable> queue;
  56     private final ExecutorService executor;
  57 
  58     public StressAddMultiThreadedTest() {
  59         queue = new ArrayBlockingQueue<>(THREADS);
  60         executor = new ThreadPoolExecutor(THREADS, THREADS, 100,
  61                 TimeUnit.MILLISECONDS, queue,
  62                 new ThreadPoolExecutor.CallerRunsPolicy());
  63     }
  64 
  65     public static void main(String[] args) {
  66         new StressAddMultiThreadedTest().test();
  67     }
  68 
  69     @Override
  70     protected boolean makeConnection(int pid) {
  71         executor.submit(() -> new PidJcmdExecutor(String.valueOf(pid))
  72                 .execute(nextCommand()));
  73         return (--commands != 0);
  74     }
  75 
  76     @Override
  77     protected void finish() {
  78         executor.shutdown();
  79         try {
  80             executor.awaitTermination(10, TimeUnit.SECONDS);
  81         } catch (InterruptedException e) {
  82             throw new Error("Interrupted while awaiting for termination: " + e,
  83                     e);
  84         }
  85         executor.shutdownNow();
  86     }
  87 }