test/jdk/jdk/jfr/event/gc/collection/AppGCProvoker.java
changeset 50113 caf115bb98ad
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/event/gc/collection/AppGCProvoker.java	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,57 @@
+/*
+ * 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;
+        }
+    }
+}