Mercurial > hg > graal-compiler
view test/gc/class_unloading/AllocateBeyondMetaspaceSize.java @ 20410:232b50b20797 jdk8u40-b05
Added tag hs25.40-b09 for changeset c9635cad4a5d
author | amurillo |
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date | Fri, 05 Sep 2014 15:02:44 -0700 |
parents | f3aeae1f9fc5 |
children |
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/* * Copyright (c) 2014, 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. */ import sun.hotspot.WhiteBox; class AllocateBeyondMetaspaceSize { public static Object dummy; public static void main(String [] args) { if (args.length != 2) { throw new IllegalArgumentException("Usage: <MetaspaceSize> <YoungGenSize>"); } long metaspaceSize = Long.parseLong(args[0]); long youngGenSize = Long.parseLong(args[1]); run(metaspaceSize, youngGenSize); } private static void run(long metaspaceSize, long youngGenSize) { WhiteBox wb = WhiteBox.getWhiteBox(); long allocationBeyondMetaspaceSize = metaspaceSize * 2; long metaspace = wb.allocateMetaspace(null, allocationBeyondMetaspaceSize); triggerYoungGC(youngGenSize); wb.freeMetaspace(null, metaspace, metaspace); } private static void triggerYoungGC(long youngGenSize) { long approxAllocSize = 32 * 1024; long numAllocations = 2 * youngGenSize / approxAllocSize; for (long i = 0; i < numAllocations; i++) { dummy = new byte[(int)approxAllocSize]; } } }