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/*
* This file is part of spark.
*
* Copyright (c) lucko (Luck) <luck@lucko.me>
* Copyright (c) contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package me.lucko.spark.sampler;
import java.util.concurrent.TimeUnit;
/**
* Builds {@link Sampler} instances.
*/
public class SamplerBuilder {
private double samplingInterval = 4; // milliseconds
private boolean includeLineNumbers = false;
private long timeout = -1;
private ThreadDumper threadDumper = ThreadDumper.ALL;
private ThreadGrouper threadGrouper = ThreadGrouper.BY_NAME;
private int ticksOver = -1;
private TickCounter tickCounter = null;
public SamplerBuilder() {
}
public SamplerBuilder samplingInterval(double samplingInterval) {
this.samplingInterval = samplingInterval;
return this;
}
public SamplerBuilder completeAfter(long timeout, TimeUnit unit) {
if (timeout <= 0) {
throw new IllegalArgumentException("timeout > 0");
}
this.timeout = System.currentTimeMillis() + unit.toMillis(timeout);
return this;
}
public SamplerBuilder threadDumper(ThreadDumper threadDumper) {
this.threadDumper = threadDumper;
return this;
}
public SamplerBuilder threadGrouper(ThreadGrouper threadGrouper) {
this.threadGrouper = threadGrouper;
return this;
}
public SamplerBuilder ticksOver(int ticksOver, TickCounter tickCounter) {
this.ticksOver = ticksOver;
this.tickCounter = tickCounter;
return this;
}
public SamplerBuilder includeLineNumbers(boolean includeLineNumbers) {
this.includeLineNumbers = includeLineNumbers;
return this;
}
public Sampler start() {
Sampler sampler;
int intervalMicros = (int) (this.samplingInterval * 1000d);
if (this.ticksOver != -1 && this.tickCounter != null) {
sampler = new Sampler(intervalMicros, this.threadDumper, this.threadGrouper, this.timeout, this.includeLineNumbers, this.tickCounter, this.ticksOver);
} else {
sampler = new Sampler(intervalMicros, this.threadDumper, this.threadGrouper, this.timeout, this.includeLineNumbers);
}
sampler.start();
return sampler;
}
}
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