Mercurial > hg > truffle
view test/compiler/7009231/Test7009231.java @ 9504:106f0a0acafa
refactored monitor handling in EA: MonitorEnter/Exit is removed, not eliminated
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Tue, 30 Apr 2013 17:29:33 +0200 |
parents | 037c727f35fb |
children |
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/* * Copyright (c) 2010, 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 * @bug 7009231 * @summary C1: Incorrect CAS code for longs on SPARC 32bit * * @run main/othervm -Xbatch Test7009231 * */ import java.util.Random; import java.util.concurrent.atomic.AtomicLong; public class Test7009231 { public static void main(String[] args) throws InterruptedException { doTest(8); } private static void doTest(int nThreads) throws InterruptedException { Thread[] aThreads = new Thread[nThreads]; final AtomicLong atl = new AtomicLong(); for (int i = 0; i < nThreads; i++) { aThreads[i] = new RunnerThread(atl, 1L << (8 * i)); } for (int i = 0; i < nThreads; i++) { aThreads[i].start(); } for (int i = 0; i < nThreads; i++) { aThreads[i].join(); } } public static class RunnerThread extends Thread { public RunnerThread(AtomicLong atomic, long lMask) { m_lMask = lMask; m_atomic = atomic; } public void run() { AtomicLong atomic = m_atomic; long lMask = m_lMask; for (int i = 0; i < 100000; i++) { setBit(atomic, lMask); clearBit(atomic, lMask); } } protected void setBit(AtomicLong atomic, long lMask) { long lWord; do { lWord = atomic.get(); } while (!atomic.compareAndSet(lWord, lWord | lMask)); if ((atomic.get() & lMask) == 0L) { throw new InternalError(); } } protected void clearBit(AtomicLong atomic, long lMask) { long lWord; do { lWord = atomic.get(); } while (!atomic.compareAndSet(lWord, lWord & ~lMask)); if ((atomic.get() & lMask) != 0L) { throw new InternalError(); } } private long m_lMask; private AtomicLong m_atomic; } }