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This module contains the Metro runtime code.
/*
* 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 java.util.Map ;
import java.util.HashMap ;
import org.glassfish.pfl.tf.timer.spi.Controllable;
import org.glassfish.pfl.tf.timer.spi.NamedBase;
import org.glassfish.pfl.tf.timer.spi.Statistics;
import org.glassfish.pfl.tf.timer.spi.StatisticsAccumulator;
import org.glassfish.pfl.tf.timer.spi.StatsEventHandler;
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 abstract class StatsEventHandlerBase extends NamedBase
implements StatsEventHandler {
protected static final String UNITS = "nanoseconds" ;
// indexed by Timer.id()
protected ArrayList saList ;
protected StatsEventHandlerBase( TimerFactory factory, String name ) {
super( factory, name ) ;
// Note that this implies that no timers or timergroups are created
// after the StatsEventHandler is created. We should probably fix this.
int size = factory.numberOfIds() ;
saList = new ArrayList( size ) ;
for (int ctr=0; ctr teStack, TimerEvent event ) {
Timer timer = event.timer() ;
int id = timer.id() ;
if (event.type() == TimerEvent.TimerEventType.ENTER) {
// push this event onto the Timer stack
teStack.push( event ) ;
} else {
// pop off the ENTER event, record duration
if (teStack.empty()) {
throw new IllegalStateException(
"Unexpected empty stack for EXIT event on timer " + timer ) ;
} else {
TimerEvent enter = teStack.pop() ;
if (!timer.equals( enter.timer() ))
throw new IllegalStateException(
"Expected timer " + timer + " but found timer "
+ enter.timer() + " on the TimerEvent stack" ) ;
long duration = event.time() - enter.time() ;
// Remove the contribution of nested calls from
// the time for all outer calls.
for (TimerEvent ev : teStack) {
ev.incrementTime( duration ) ;
}
recordDuration( id, duration ) ;
}
}
}
public Map stats() {
Map result = new HashMap() ;
for (int ctr=0; ctr