org.fabric3.timer.impl.TimerPoolStatistics Maven / Gradle / Ivy
/*
* Fabric3
* Copyright (c) 2009-2015 Metaform Systems
*
* Licensed 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.
* Portions originally based on Apache Tuscany 2007
* licensed under the Apache 2.0 license.
*/
package org.fabric3.timer.impl;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import org.fabric3.api.annotation.management.ManagementOperation;
/**
* Collects statistics for a timer pool.
*/
public class TimerPoolStatistics {
private String poolName;
private int coreSize;
private long start;
private AtomicInteger totalExecutions = new AtomicInteger();
private AtomicLong totalExecutionTime = new AtomicLong();
public TimerPoolStatistics(String poolName, int coreSize) {
this.poolName = poolName;
this.coreSize = coreSize;
}
public void start() {
start = System.currentTimeMillis();
}
@ManagementOperation(description = "The timer pool name")
public String getPoolName() {
return poolName;
}
@ManagementOperation(description = "The number of threads allocated to the timer pool")
public int getCoreSize() {
return coreSize;
}
@ManagementOperation(description = "The approximate time in milliseconds the pool has been active")
public long getActiveTime() {
return System.currentTimeMillis() - start;
}
@ManagementOperation(description = "The total number of timer executions for the timer pool")
public int getTotalExecutions() {
return totalExecutions.get();
}
@ManagementOperation(description = "The total execution time in milliseconds for all timers in the pool")
public long getTotalExecutionTime() {
return totalExecutionTime.get();
}
@ManagementOperation(description = "The approximate average execution time in milliseconds for timers in the pool")
public long getMeanExecutionTime() {
if (totalExecutions.get() == 0) {
return 0;
}
return totalExecutionTime.get() / totalExecutions.get();
}
public void incrementTotalExecutions() {
totalExecutions.incrementAndGet();
}
public void incrementExecutionTime(long time) {
totalExecutionTime.addAndGet(time);
}
}