/*
* Copyright ( c ) 2017 , 2018 , Red Hat , Inc . 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
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*/
package gc.epsilon;
/**
* @ test TestMemoryPools
* @ requires vm . gc . Epsilon
* @ summary Test JMX memory pools
* @ modules java . base / jdk . internal . misc
* java . management
*
* @ run main / othervm - Xms64m - Xmx64m
* - XX : + UnlockExperimentalVMOptions - XX : + UseEpsilonGC
* gc . epsilon . TestMemoryPools
*/
import java.lang.management.*;
import java.util.*;
public class TestMemoryPools {
public static void main(String[] args) throws Exception {
List<MemoryManagerMXBean> mms = ManagementFactory.getMemoryManagerMXBeans();
if (mms == null ) {
throw new RuntimeException("getMemoryManagerMXBeans is null" );
}
if (mms.isEmpty()) {
throw new RuntimeException("getMemoryManagerMXBeans is empty" );
}
for (MemoryManagerMXBean mmBean : mms) {
String[] names = mmBean.getMemoryPoolNames();
if (names == null ) {
throw new RuntimeException("getMemoryPoolNames() is null" );
}
if (names.length == 0 ) {
throw new RuntimeException("getMemoryPoolNames() is empty" );
}
for (String name : names) {
if (name == null ) {
throw new RuntimeException("pool name is null" );
}
if (name.length() == 0 ) {
throw new RuntimeException("pool name is empty" );
}
}
}
}
}
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