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EntityTickProfiler.java
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EntityTickProfiler.java
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package me.nallar.tickthreading.minecraft.profiling;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import com.google.common.base.Functions;
import com.google.common.collect.Ordering;
import me.nallar.tickthreading.util.MappingUtil;
import me.nallar.tickthreading.util.TableFormatter;
import org.cliffc.high_scale_lib.NonBlockingHashMap;
public class EntityTickProfiler {
private int ticks;
private final AtomicLong totalTime = new AtomicLong();
private final StringBuffer slowTicks = new StringBuffer(); // buffer for threadsafety
public void record(Object o, long time) {
if (time < 0) {
time = 0;
} else if (time > 25000000 && slowTicks.length() <= 500) {
slowTicks.append(o + " took too long: " + time / 1000000 + "ms\n"); // No chained append for threadsafety
}
Class<?> clazz = o.getClass();
getTime(clazz).addAndGet(time);
getInvocationCount(clazz).incrementAndGet();
totalTime.addAndGet(time);
}
public void clear() {
invocationCount.clear();
time.clear();
totalTime.set(0);
ticks = 0;
}
public void tick() {
ticks++;
}
public TableFormatter writeData(TableFormatter tf) {
tf.sb.append(slowTicks);
Map<Class<?>, Long> time = new HashMap<Class<?>, Long>();
for (Map.Entry<Class<?>, AtomicLong> entry : this.time.entrySet()) {
time.put(entry.getKey(), entry.getValue().get());
}
final List<Class<?>> sortedKeysByTime = Ordering.natural().reverse().onResultOf(Functions.forMap(time)).immutableSortedCopy(time.keySet());
tf
.heading("Class")
.heading("Total Time/Tick")
.heading("%");
for (int i = 0; i < 5 && i < sortedKeysByTime.size(); i++) {
tf
.row(niceName(sortedKeysByTime.get(i)))
.row(time.get(sortedKeysByTime.get(i)) / (1000000d * ticks))
.row((time.get(sortedKeysByTime.get(i)) / (double) totalTime.get()) * 100);
}
tf.finishTable();
tf.sb.append('\n');
Map<Class<?>, Long> timePerTick = new HashMap<Class<?>, Long>();
for (Map.Entry<Class<?>, AtomicLong> entry : this.time.entrySet()) {
timePerTick.put(entry.getKey(), entry.getValue().get() / invocationCount.get(entry.getKey()).get());
}
final List<Class<?>> sortedKeysByTimePerTick = Ordering.natural().reverse().onResultOf(Functions.forMap(timePerTick)).immutableSortedCopy(timePerTick.keySet());
tf
.heading("Class")
.heading("Time/tick")
.heading("Calls");
for (int i = 0; i < 5 && i < sortedKeysByTimePerTick.size(); i++) {
tf
.row(niceName(sortedKeysByTimePerTick.get(i)))
.row(timePerTick.get(sortedKeysByTimePerTick.get(i)) / 1000000d)
.row(invocationCount.get(sortedKeysByTimePerTick.get(i)));
}
tf.finishTable();
return tf;
}
private static String niceName(Class<?> clazz) {
String name = MappingUtil.debobfuscate(clazz.getName());
if (name.contains(".")) {
String cName = name.substring(name.lastIndexOf('.') + 1);
String pName = name.substring(0, name.lastIndexOf('.'));
if (pName.contains(".")) {
pName = pName.substring(pName.lastIndexOf('.') + 1);
}
return (cName.length() < 15 ? pName + '.' : "") + cName;
}
return name;
}
private final Map<Class<?>, AtomicInteger> invocationCount = new NonBlockingHashMap<Class<?>, AtomicInteger>();
private final Map<Class<?>, AtomicLong> time = new NonBlockingHashMap<Class<?>, AtomicLong>();
// We synchronize on the class name as it is always the same object
// We do not synchronize on the class object as that would also
// prevent any synchronized static methods on it from running
private AtomicInteger getInvocationCount(Class<?> clazz) {
AtomicInteger i = invocationCount.get(clazz);
if (i == null) {
synchronized (clazz.getName()) {
i = invocationCount.get(clazz);
if (i == null) {
i = new AtomicInteger();
invocationCount.put(clazz, i);
}
}
}
return i;
}
private AtomicLong getTime(Class<?> clazz) {
AtomicLong t = time.get(clazz);
if (t == null) {
synchronized (clazz.getName()) {
t = time.get(clazz);
if (t == null) {
t = new AtomicLong();
time.put(clazz, t);
}
}
}
return t;
}
}