Mercurial > hg > truffle
diff test/runtime/Metaspace/FragmentMetaspace.java @ 10344:699d9df07e59
8009576: Test returns ClassNotFoundException
Summary: Small classpath fix and move tests into open
Reviewed-by: mgerdin, zgu
author | ctornqvi |
---|---|
date | Thu, 23 May 2013 17:39:32 +0200 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/runtime/Metaspace/FragmentMetaspace.java Thu May 23 17:39:32 2013 +0200 @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2013, 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 + * @library /runtime/testlibrary + * @build GeneratedClassLoader + * @run main/othervm/timeout=200 FragmentMetaspace + */ + +import java.io.IOException; + +/** + * Test that tries to fragment the native memory used by class loaders. + * This test creates class loaders that load classes of increasing size for every + * iteration. By increasing the size of the class meta data needed for every iteration + * we stress the subsystem for allocating native memory for meta data. + */ +public class FragmentMetaspace { + + public static void main(String... args) { + runGrowing(Long.valueOf(System.getProperty("time", "80000"))); + // try to clean up and unload classes to decrease + // class verification time in debug vm + System.gc(); + } + + private static void runGrowing(long time) { + long startTime = System.currentTimeMillis(); + for (int i = 0; System.currentTimeMillis() < startTime + time; ++i) { + try { + GeneratedClassLoader gcl = new GeneratedClassLoader(); + + Class<?> c = gcl.getGeneratedClasses(i, 100)[0]; + c.newInstance(); + c = null; + + gcl = null; + } catch (IOException|InstantiationException|IllegalAccessException ex) { + throw new RuntimeException(ex); + } + } + } +}