/*
* Copyright ( c ) 2012 , 2015 , 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 .
*/
/*
* Portions Copyright ( c ) 2012 IBM Corporation
*/
/**
* @ test
* @ bug 7164191
* @ summary properties . putAll API may fail with ConcurrentModifcationException on multi - thread scenario
* @ modules jdk . management . agent / jdk . internal . agent
* @ author Deven You
*/
import java.util.Properties;
import jdk.internal.agent.Agent;
public class AgentCMETest {
static Class <?> agentClass;
/**
* In jdk . internal . agent . Agent . loadManagementProperties ( ) , call
* properties . putAll API may fail with ConcurrentModifcationException if the
* system properties are modified simultaneously by another thread
*
* @ param args
* @ throws Exception
*/
public static void main(String[] args) throws Exception {
System.out.println("Start..." );
final Properties properties = System.getProperties();
Thread t1 = new Thread (new Runnable() {
public void run() {
for (int i = 0 ; i < 100 ; i++) {
properties.put(String.valueOf(i), "" );
try {
Thread .sleep(1 );
} catch (InterruptedException e) {
// do nothing
}
}
}
});
t1.start();
for (int i = 0 ; i < 10000 ; i++) {
Agent.loadManagementProperties();
}
System.out.println("Finished..." );
}
}
Messung V0.5 in Prozent C=56 H=97 G=79
¤ Dauer der Verarbeitung: 0.9 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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