/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.monitor.jvm;
public class GcNames {
public static final String YOUNG = "young";
public static final String OLD = "old";
public static final String SURVIVOR = "survivor";
/**
* Resolves the GC type by its memory pool name ({@link java.lang.management.MemoryPoolMXBean#getName()}.
*/
public static String getByMemoryPoolName(String poolName, String defaultName) {
if ("Eden Space".equals(poolName) || "PS Eden Space".equals(poolName) || "Par Eden Space".equals(poolName) || "G1 Eden Space".equals(poolName)) {
return YOUNG;
}
if ("Survivor Space".equals(poolName) || "PS Survivor Space".equals(poolName) || "Par Survivor Space".equals(poolName) || "G1 Survivor Space".equals(poolName)) {
return SURVIVOR;
}
if ("Tenured Gen".equals(poolName) || "PS Old Gen".equals(poolName) || "CMS Old Gen".equals(poolName) || "G1 Old Gen".equals(poolName)) {
return OLD;
}
return defaultName;
}
public static String getByGcName(String gcName, String defaultName) {
if ("Copy".equals(gcName) || "PS Scavenge".equals(gcName) || "ParNew".equals(gcName) || "G1 Young Generation".equals(gcName)) {
return YOUNG;
}
if ("MarkSweepCompact".equals(gcName) || "PS MarkSweep".equals(gcName) || "ConcurrentMarkSweep".equals(gcName) || "G1 Old Generation".equals(gcName)) {
return OLD;
}
return defaultName;
}
}