jdk/test/java/util/Locale/Bug6989440.java
author naoto
Wed, 12 Oct 2011 12:12:25 -0700
changeset 10710 b18db2d63e3b
parent 6835 859aa05172b6
child 13583 dc0017b1a452
permissions -rw-r--r--
7027061: Testcase failure: java/util/Locale/Bug6989440.java - java.util.ConcurrentModificationException Reviewed-by: dholmes, chegar
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/*
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 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 6989440
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 * @summary Verify ConcurrentModificationException is not thrown with multiple
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 *     thread accesses.
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 * @compile -XDignore.symbol.file=true Bug6989440.java
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 * @run main Bug6989440
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 */
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import java.text.spi.DateFormatProvider;
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import java.util.spi.LocaleNameProvider;
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import java.util.spi.LocaleServiceProvider;
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import java.util.spi.TimeZoneNameProvider;
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import sun.util.LocaleServiceProviderPool;
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public class Bug6989440 {
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    static volatile boolean failed;  // false
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    static final int THREADS = 50;
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    public static void main(String[] args) throws Exception {
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        Thread[] threads = new Thread[THREADS];
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        for (int i=0; i<threads.length; i++)
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            threads[i] = new TestThread();
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        for (int i=0; i<threads.length; i++)
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            threads[i].start();
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        for (int i=0; i<threads.length; i++)
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            threads[i].join();
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        if (failed)
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            throw new RuntimeException("Failed: check output");
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    }
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    static class TestThread extends Thread {
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        private Class<? extends LocaleServiceProvider> cls;
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        private static int count;
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        public TestThread(Class<? extends LocaleServiceProvider> providerClass) {
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            cls = providerClass;
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        }
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        public TestThread() {
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            int which = count++ % 3;
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            switch (which) {
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                case 0 : cls = LocaleNameProvider.class; break;
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                case 1 : cls = TimeZoneNameProvider.class; break;
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                case 2 : cls = DateFormatProvider.class; break;
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                default : throw new AssertionError("Should not reach here");
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            }
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        }
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        public void run() {
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            try {
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                LocaleServiceProviderPool pool = LocaleServiceProviderPool.getPool(cls);
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                pool.getAvailableLocales();
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            } catch (Exception e) {
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                System.out.println(e);
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                e.printStackTrace();
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                failed = true;
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            }
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        }
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    }
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}