test/hotspot/jtreg/gc/cms/DisableResizePLAB.java
changeset 47216 71c04702a3d5
parent 41705 332239c052cc
child 50455 2b73cce96dce
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/gc/cms/DisableResizePLAB.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2014, 2016, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test DisableResizePLAB
+ * @key gc
+ * @bug 8060467
+ * @author filipp.zhinkin@oracle.com, john.coomes@oracle.com
+ * @requires vm.gc.ConcMarkSweep
+ * @summary Run CMS with PLAB resizing disabled and a small OldPLABSize
+ * @run main/othervm -XX:+UseConcMarkSweepGC -XX:-ResizePLAB -XX:OldPLABSize=1k -Xmx256m -Xlog:gc=debug DisableResizePLAB
+ */
+
+public class DisableResizePLAB {
+    public static void main(String args[]) throws Exception {
+        Object garbage[] = new Object[1_000];
+        for (int i = 0; i < garbage.length; i++) {
+            garbage[i] = new byte[0];
+        }
+        long startTime = System.currentTimeMillis();
+        while (System.currentTimeMillis() - startTime < 10_000) {
+            Object o = new byte[1024];
+        }
+    }
+}