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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.common.sampler;
import me.lucko.spark.common.SparkPlatform;
import me.lucko.spark.common.sampler.async.AsyncProfilerAccess;
import me.lucko.spark.common.sampler.async.AsyncSampler;
import me.lucko.spark.common.sampler.async.SampleCollector;
import me.lucko.spark.common.sampler.java.JavaSampler;
import me.lucko.spark.common.tick.TickHook;
import java.util.concurrent.TimeUnit;
/**
* Builds {@link Sampler} instances.
*/
@SuppressWarnings("UnusedReturnValue")
public class SamplerBuilder {
private SamplerMode mode = SamplerMode.EXECUTION;
private double samplingInterval = -1;
private boolean ignoreSleeping = false;
private boolean ignoreNative = false;
private boolean useAsyncProfiler = true;
private boolean allocLiveOnly = false;
private long autoEndTime = -1;
private boolean background = false;
private ThreadDumper threadDumper = ThreadDumper.ALL;
private ThreadGrouper threadGrouper = ThreadGrouper.BY_NAME;
private int ticksOver = -1;
private TickHook tickHook = null;
public SamplerBuilder() {
}
public SamplerBuilder mode(SamplerMode mode) {
this.mode = mode;
return this;
}
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.autoEndTime = System.currentTimeMillis() + unit.toMillis(timeout);
return this;
}
public SamplerBuilder background(boolean background) {
this.background = background;
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, TickHook tickHook) {
this.ticksOver = ticksOver;
this.tickHook = tickHook;
return this;
}
public SamplerBuilder ignoreSleeping(boolean ignoreSleeping) {
this.ignoreSleeping = ignoreSleeping;
return this;
}
public SamplerBuilder ignoreNative(boolean ignoreNative) {
this.ignoreNative = ignoreNative;
return this;
}
public SamplerBuilder forceJavaSampler(boolean forceJavaSampler) {
this.useAsyncProfiler = !forceJavaSampler;
return this;
}
public SamplerBuilder allocLiveOnly(boolean allocLiveOnly) {
this.allocLiveOnly = allocLiveOnly;
return this;
}
public Sampler start(SparkPlatform platform) throws UnsupportedOperationException {
if (this.samplingInterval <= 0) {
throw new IllegalArgumentException("samplingInterval = " + this.samplingInterval);
}
boolean onlyTicksOverMode = this.ticksOver != -1 && this.tickHook != null;
boolean canUseAsyncProfiler = this.useAsyncProfiler &&
!onlyTicksOverMode &&
!(this.ignoreSleeping || this.ignoreNative) &&
AsyncProfilerAccess.getInstance(platform).checkSupported(platform);
if (this.mode == SamplerMode.ALLOCATION && (!canUseAsyncProfiler || !AsyncProfilerAccess.getInstance(platform).checkAllocationProfilingSupported(platform))) {
throw new UnsupportedOperationException("Allocation profiling is not supported on your system. Check the console for more info.");
}
int interval = (int) (this.mode == SamplerMode.EXECUTION ?
this.samplingInterval * 1000d : // convert to microseconds
this.samplingInterval
);
SamplerSettings settings = new SamplerSettings(interval, this.threadDumper, this.threadGrouper, this.autoEndTime, this.background);
Sampler sampler;
if (this.mode == SamplerMode.ALLOCATION) {
sampler = new AsyncSampler(platform, settings, new SampleCollector.Allocation(interval, this.allocLiveOnly));
} else if (canUseAsyncProfiler) {
sampler = new AsyncSampler(platform, settings, new SampleCollector.Execution(interval));
} else if (onlyTicksOverMode) {
sampler = new JavaSampler(platform, settings, this.ignoreSleeping, this.ignoreNative, this.tickHook, this.ticksOver);
} else {
sampler = new JavaSampler(platform, settings, this.ignoreSleeping, this.ignoreNative);
}
sampler.start();
return sampler;
}
}
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