1 /*
   2  * Copyright (c) 2013, 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.
   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 TestSystemGC
  26  * @key gc
  27  * @requires vm.gc=="null"
  28  * @summary Runs System.gc() with different flags.
  29  * @run main/othervm TestSystemGC
  30  * @run main/othervm -XX:+UseSerialGC TestSystemGC
  31  * @run main/othervm -XX:+UseParallelGC TestSystemGC
  32  * @run main/othervm -XX:+UseParallelGC -XX:-UseParallelOldGC TestSystemGC
  33  * @run main/othervm -XX:+UseG1GC TestSystemGC
  34  * @run main/othervm -XX:+UseG1GC -XX:+ExplicitGCInvokesConcurrent TestSystemGC
  35  * @run main/othervm -XX:+UseLargePages TestSystemGC
  36  * @run main/othervm -XX:+UseLargePages -XX:+UseLargePagesInMetaspace TestSystemGC
  37  */
  38 
  39 /*
  40  * @test TestSystemGCCMS
  41  * @key gc
  42  * @comment Graal does not support CMS
  43  * @requires vm.gc=="null" & !vm.graal.enabled
  44  * @run main/othervm -XX:+UseConcMarkSweepGC TestSystemGC
  45  * @run main/othervm -XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent TestSystemGC
  46  */
  47 
  48 public class TestSystemGC {
  49   public static void main(String args[]) throws Exception {
  50     System.gc();
  51   }
  52 }