1 /*
   2 * Copyright (c) 2013, 2014, 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:+UseParNewGC TestSystemGC
  32  * @run main/othervm -XX:+UseParallelGC TestSystemGC
  33  * @run main/othervm -XX:+UseParallelGC -XX:-UseParallelOldGC TestSystemGC
  34  * @run main/othervm -XX:+UseConcMarkSweepGC TestSystemGC
  35  * @run main/othervm -XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent TestSystemGC
  36  * @run main/othervm -XX:+UseConcMarkSweepGC -XX:+ExplicitGCInvokesConcurrent -XX:-UseParNewGC TestSystemGC
  37  * @run main/othervm -XX:+UseG1GC TestSystemGC
  38  * @run main/othervm -XX:+UseG1GC -XX:+ExplicitGCInvokesConcurrent TestSystemGC
  39  * @run main/othervm -XX:+UseLargePages TestSystemGC
  40  * @run main/othervm -XX:+UseLargePages -XX:+UseLargePagesInMetaspace TestSystemGC
  41  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC TestSystemGC
  42  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:+ExplicitGCInvokesConcurrent TestSystemGC
  43  */
  44 
  45 public class TestSystemGC {
  46   public static void main(String args[]) throws Exception {
  47     System.gc();
  48   }
  49 }