Mercurial > hg > truffle
view test/runtime/Metaspace/FragmentMetaspace.java @ 19543:353669a84287
Utilities Node#acceptInputs and Node#acceptSuccessors.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 22 Feb 2015 23:44:37 +0100 |
parents | 699d9df07e59 |
children |
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/* * 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); } } } }