Mercurial > hg > truffle
view test/compiler/6852078/Test6852078.java @ 1593:2458a1f25356
6953058: G1: A bigapp crashes with SIGSEGV in compiled code
Summary: In C2's G1 post write barrier, the loads of the buffer and index fields from the DirtyCardQueue structure may be moved across a safepoint. Use the current value of "control" in the C2 IR to limit how far these loads can move.
Reviewed-by: never, iveresov, kvn
author | johnc |
---|---|
date | Mon, 07 Jun 2010 17:46:04 -0700 |
parents | 73a726751507 |
children | c18cbe5936b8 |
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/* * Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ /** * @test * @bug 6852078 * @summary Disable SuperWord optimization for unsafe read/write * * @run main/othervm Test6852078 */ import java.util.*; import java.nio.ByteBuffer; import com.sun.corba.se.impl.encoding.ByteBufferWithInfo; import com.sun.jndi.toolkit.corba.CorbaUtils; public class Test6852078 { public Test6852078(String [] args) { int capacity = 128; ByteBuffer bb = ByteBuffer.allocateDirect(capacity); ByteBufferWithInfo bbwi = new ByteBufferWithInfo( CorbaUtils.getOrb(null, -1, new Hashtable()), bb); byte[] tmpBuf; tmpBuf = new byte[bbwi.buflen]; for (int i = 0; i < capacity; i++) tmpBuf[i] = bbwi.byteBuffer.get(i); } public static void main(String [] args) { for (int i=0; i<2000; i++) { Test6852078 t = new Test6852078(args); } } }