/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.glassfish.pfl.tf.timer.impl ;
import java.util.ArrayList ;
import java.util.Stack ;
import org.glassfish.pfl.tf.timer.spi.StatisticsAccumulator;
import org.glassfish.pfl.tf.timer.spi.Timer;
import org.glassfish.pfl.tf.timer.spi.TimerEvent;
import org.glassfish.pfl.tf.timer.spi.TimerFactory;
public class MultiThreadedStatsEventHandlerImpl extends StatsEventHandlerBase {
private Object saListLock ;
// ArrayList indexed by Timer.id
private ThreadLocal<ArrayList<Stack<TimerEvent>>> tlsteList ;
MultiThreadedStatsEventHandlerImpl( TimerFactory factory, String name ) {
super( factory, name ) ;
final int size = factory.numberOfIds() ;
saListLock = new Object() ;
tlsteList = new ThreadLocal<ArrayList<Stack<TimerEvent>>>() {
public ArrayList<Stack<TimerEvent>> initialValue() {
ArrayList<Stack<TimerEvent>> result = new ArrayList<Stack<TimerEvent>>( size ) ;
for (int ctr=0; ctr<size; ctr++) {
result.add( new Stack<TimerEvent>() ) ;
}
return result ;
}
} ;
}
private Stack<TimerEvent> getSteElement( int id ) {
ArrayList<Stack<TimerEvent>> ste = tlsteList.get() ;
ste.ensureCapacity( id + 1 ) ;
for (int ctr=ste.size(); ctr<=id; ctr++)
ste.add( new Stack<TimerEvent>() ) ;
return ste.get( id ) ;
}
public void clear() {
synchronized (saListLock) {
super.clear() ;
}
}
protected void recordDuration( int id, long duration ) {
synchronized (saListLock) {
StatisticsAccumulator acc = saList.get( id ) ;
acc.sample( duration ) ;
}
}
public void notify( TimerEvent event ) {
Timer timer = event.timer() ;
int id = timer.id() ;
notify( getSteElement( id ), event ) ;
}
}