jdk8-mips64-public/hotspot: test/compiler/7190310/Test7190310.java@49b5160951dd (annotated)

test/compiler/7190310/Test7190310.java@49b5160951dd (annotated)

test/compiler/7190310/Test7190310.java

Thu, 17 Apr 2014 16:09:08 -0700

author: amurillo
date: Thu, 17 Apr 2014 16:09:08 -0700
changeset 6635: 49b5160951dd
parent 4449: bf623b2d5508
child 6876: 710a3c8b516e
permissions: -rw-r--r--

Added tag hs25.20-b11 for changeset b6a2ba7d3ea7

 /*
  * Copyright (c) 2012, 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 7190310
  * @summary Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
  * @run main/othervm/timeout=600 -Xbatch Test7190310
  */
 /*
  * Note bug exhibits as infinite loop, timeout is helpful.
  * It should normally finish pretty quickly, but on some especially slow machines
  * it may not.  The companion _unsafe test lacks a timeout, but that is okay.
  */
 import java.lang.ref.*;
 public class Test7190310 {
   private static Object str = new Object() {
     public String toString() {
       return "The Object";
     }
     protected void finalize() throws Throwable {
       System.out.println("The Object is being finalized");
       super.finalize();
     }
   };
   private final static ReferenceQueue<Object> rq =
       new ReferenceQueue<Object>();
   private final static WeakReference<Object> wr =
       new WeakReference<Object>(str, rq);
   public static void main(String[] args)
       throws InterruptedException {
     Thread reader = new Thread() {
       public void run() {
         while (wr.get() != null) {
         }
         System.out.println("wr.get() returned null");
       }
     };
     Thread queueReader = new Thread() {
       public void run() {
         try {
           Reference<? extends Object> ref = rq.remove();
           System.out.println(ref);
           System.out.println("queueReader returned, ref==wr is "
               + (ref == wr));
         } catch (InterruptedException e) {
           System.err.println("Sleep interrupted - exiting");
         }
       }
     };
     reader.start();
     queueReader.start();
     Thread.sleep(1000);
     str = null;
     System.gc();
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/compiler/7190310/Test7190310.java@49b5160951dd (annotated)

test/compiler/7190310/Test7190310.java