jdk8-mips64-public/hotspot: test/compiler/6589834/Test

test/compiler/6589834/Test_ia32.java@dbb05f6d93c4 (annotated)

test/compiler/6589834/Test_ia32.java

Mon, 28 Jul 2014 15:06:38 -0700

author: fzhinkin
date: Mon, 28 Jul 2014 15:06:38 -0700
changeset 6997: dbb05f6d93c4
parent 6198: 55fb97c4c58d
child 6876: 710a3c8b516e
permissions: -rw-r--r--

8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on
Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn

 /*
  * Copyright (c) 2009, 2013, 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 6589834
  * @summary deoptimization problem with -XX:+DeoptimizeALot
  *
  * @run main 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;
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/compiler/6589834/Test_ia32.java@dbb05f6d93c4 (annotated)

test/compiler/6589834/Test_ia32.java