| /* |
| * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.event.gc.collection; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Simple application to provoke various kinds of GC. |
| */ |
| public class AppGCProvoker { |
| |
| private static List<byte[]> garbage = new ArrayList<>(); |
| public static Object trash; |
| |
| public static void main(String args[]) { |
| // young gc |
| for (int i = 0; i < 100; i++) { |
| trash = new byte[100_000]; |
| } |
| |
| // system gc |
| System.gc(); |
| |
| // full gc caused by OOM |
| try { |
| while(true) { |
| garbage.add(new byte[150_000]); |
| } |
| } catch (OutOfMemoryError e) { |
| garbage = null; |
| } |
| } |
| } |