Mercurial > hg > truffle
diff test/compiler/7009231/Test7009231.java @ 2089:037c727f35fb
7009231: C1: Incorrect CAS code for longs on SPARC 32bit
Summary: Fix CAS of longs on SPARC 32bit and cmove on SPARC 64bit.
Reviewed-by: kvn
author | iveresov |
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date | Mon, 27 Dec 2010 21:51:31 -0800 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/7009231/Test7009231.java Mon Dec 27 21:51:31 2010 -0800 @@ -0,0 +1,100 @@ +/* + * 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; + } +}