/*
* Copyright ( c ) 2010 , 2012 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* 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 .
*
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*/
/*
* @ test
* @ bug 6989440
* @ summary Verify ConcurrentModificationException is not thrown with multiple
* thread accesses .
* @ modules java . base / sun . util . locale . provider
* @ compile - XDignore . symbol . file = true Bug6989440 . java
* @ run main Bug6989440
*/
import java.text.spi.DateFormatProvider;
import java.util.spi.LocaleNameProvider;
import java.util.spi.LocaleServiceProvider;
import java.util.spi.TimeZoneNameProvider;
import sun.util.locale.provider.LocaleServiceProviderPool;
public class Bug6989440 {
static volatile boolean failed; // false
static final int THREADS = 50 ;
public static void main(String[] args) throws Exception {
Thread [] threads = new Thread [THREADS];
for (int i=0 ; i<threads.length; i++)
threads[i] = new TestThread();
for (int i=0 ; i<threads.length; i++)
threads[i].start();
for (int i=0 ; i<threads.length; i++)
threads[i].join();
if (failed)
throw new RuntimeException("Failed: check output" );
}
static class TestThread extends Thread {
private Class <? extends LocaleServiceProvider> cls;
private static int count;
public TestThread(Class <? extends LocaleServiceProvider> providerClass) {
cls = providerClass;
}
public TestThread() {
int which = count++ % 3 ;
switch (which) {
case 0 : cls = LocaleNameProvider.class ; break ;
case 1 : cls = TimeZoneNameProvider.class ; break ;
case 2 : cls = DateFormatProvider.class ; break ;
default : throw new AssertionError("Should not reach here" );
}
}
public void run() {
try {
LocaleServiceProviderPool pool = LocaleServiceProviderPool.getPool(cls);
pool.getAvailableLocales();
} catch (Exception e) {
System.out.println(e);
e.printStackTrace();
failed = true ;
}
}
}
}
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¤ Dauer der Verarbeitung: 0.1 Sekunden
(vorverarbeitet am 2026-10-11)
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