Mercurial > hg > graal-compiler
view test/compiler/6589834/Test_ia32.java @ 993:54b3b351d6f9
Merge
author | jrose |
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date | Wed, 23 Sep 2009 23:56:15 -0700 |
parents | aa92a90b1cc6 |
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 6589834 * @summary deoptimization problem with -XX:+DeoptimizeALot * * @run main/othervm -server Test_ia32 */ /*************************************************************************************** NOTE: The bug shows up (with several "Bug!" message) even without the flag -XX:+DeoptimizeALot. In a debug build, you may want to try the flags -XX:+VerifyStack and -XX:+DeoptimizeALot to get more information. ****************************************************************************************/ import java.lang.reflect.Constructor; public class Test_ia32 { public static int NUM_THREADS = 100; public static int CLONE_LENGTH = 1000; public static void main(String[] args) throws InterruptedException, ClassNotFoundException { Reflector[] threads = new Reflector[NUM_THREADS]; for (int i = 0; i < threads.length; i++) { threads[i] = new Reflector(); threads[i].start(); } System.out.println("Give Reflector.run() some time to compile..."); Thread.sleep(5000); System.out.println("Load RMISecurityException causing run() deoptimization"); ClassLoader.getSystemClassLoader().loadClass("java.rmi.RMISecurityException"); for (Reflector thread : threads) thread.requestStop(); for (Reflector thread : threads) try { thread.join(); } catch (InterruptedException e) { System.out.println(e); } } } class Reflector extends Thread { volatile boolean _doSpin = true; Test_ia32[] _tests; Reflector() { _tests = new Test_ia32[Test_ia32.CLONE_LENGTH]; for (int i = 0; i < _tests.length; i++) { _tests[i] = new Test_ia32(); } } static int g(int i1, int i2, Test_ia32[] arr, int i3, int i4) { if (!(i1==1 && i2==2 && i3==3 && i4==4)) { System.out.println("Bug!"); } return arr.length; } static int f(Test_ia32[] arr) { return g(1, 2, arr.clone(), 3, 4); } @Override public void run() { Constructor[] ctrs = null; Class<Test_ia32> klass = Test_ia32.class; try { ctrs = klass.getConstructors(); } catch (SecurityException e) { System.out.println(e); } try { while (_doSpin) { if (f(_tests) < 0) System.out.println("return value usage"); } } catch (NullPointerException e) { e.printStackTrace(); } System.out.println(this + " - stopped."); } public void requestStop() { System.out.println(this + " - stop requested."); _doSpin = false; } }