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Code Issues Projects Releases Wiki Activity

Use arrays instead of lists for loops

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This commit is contained in:
TheMode 2021-08-24 15:12:39 +02:00
parent 5e27399815
commit 93cbd52313
1 changed files with 21 additions and 18 deletions
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39
src/main/java/net/minestom/server/event/EventNodeImpl.java
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@ -44,8 +44,8 @@ class EventNodeImpl<T extends Event> implements EventNode<T> {
final Handle<T> castedHandle = (Handle<T>) handle;
Check.argCondition(castedHandle.node != this, "Invalid handle owner");
if (!castedHandle.updated) castedHandle.update();
final List<Consumer<T>> listeners = castedHandle.listeners;
if (listeners.isEmpty()) return;
final Consumer<T>[] listeners = castedHandle.listeners;
if (listeners.length == 0) return;
for (Consumer<T> listener : listeners) {
listener.accept(event);
}
@ -62,7 +62,7 @@ class EventNodeImpl<T extends Event> implements EventNode<T> {
public boolean hasListener(@NotNull ListenerHandle<? extends T> handle) {
final Handle<T> castedHandle = (Handle<T>) handle;
if (!castedHandle.updated) castedHandle.update();
return !castedHandle.listeners.isEmpty();
return castedHandle.listeners.length > 0;
}
@Override
@ -277,7 +277,8 @@ class EventNodeImpl<T extends Event> implements EventNode<T> {
private static final class Handle<E extends Event> implements ListenerHandle<E> {
private final EventNodeImpl<E> node;
private final Class<E> eventType;
private final List<Consumer<E>> listeners = new CopyOnWriteArrayList<>();
private Consumer<E>[] listeners = new Consumer[0];
private final List<Consumer<E>> listenersCache = new ArrayList<>();
private volatile boolean updated;
Handle(EventNodeImpl<E> node, Class<E> eventType) {
@ -287,8 +288,9 @@ class EventNodeImpl<T extends Event> implements EventNode<T> {
void update() {
synchronized (GLOBAL_CHILD_LOCK) {
this.listeners.clear();
this.listenersCache.clear();
recursiveUpdate(node);
this.listeners = listenersCache.toArray(Consumer[]::new);
this.updated = true;
}
}
@ -345,16 +347,16 @@ class EventNodeImpl<T extends Event> implements EventNode<T> {
if (size == 1) {
final var firstFilter = filterList.get(0);
// Common case where there is only one filter
this.listeners.add(event -> mapper.accept(firstFilter, event));
this.listenersCache.add(event -> mapper.accept(firstFilter, event));
} else if (size == 2) {
final var firstFilter = filterList.get(0);
final var secondFilter = filterList.get(1);
this.listeners.add(event -> {
this.listenersCache.add(event -> {
mapper.accept(firstFilter, event);
mapper.accept(secondFilter, event);
});
} else {
this.listeners.add(event -> {
this.listenersCache.add(event -> {
for (var filter : filterList) {
mapper.accept(filter, event);
}
@ -374,20 +376,21 @@ class EventNodeImpl<T extends Event> implements EventNode<T> {
final var predicate = targetNode.predicate;
final boolean hasPredicate = predicate != null;
final List<EventListener<E>> listenersCopy = List.copyOf(entry.listeners);
final List<Consumer<E>> bindingsCopy = List.copyOf(entry.bindingConsumers);
if (!hasPredicate && listenersCopy.isEmpty() && bindingsCopy.isEmpty())
final EventListener<E>[] listenersCopy = entry.listeners.toArray(EventListener[]::new);
final Consumer<E>[] bindingsCopy = entry.bindingConsumers.toArray(Consumer[]::new);
final boolean listenersEmpty = listenersCopy.length == 0;
final boolean bindingsEmpty = bindingsCopy.length == 0;
if (!hasPredicate && listenersEmpty && bindingsEmpty)
return; // Nothing to run
if (!hasPredicate && bindingsCopy.isEmpty() && listenersCopy.size() == 1) {
if (!hasPredicate && bindingsEmpty && listenersCopy.length == 1) {
// Only one normal listener
final EventListener<E> listener = listenersCopy.get(0);
this.listeners.add(e -> callListener(targetNode, listener, e));
final EventListener<E> listener = listenersCopy[0];
this.listenersCache.add(e -> callListener(targetNode, listener, e));
return;
}
// Worse case scenario, try to run everything
this.listeners.add(e -> {
this.listenersCache.add(e -> {
if (hasPredicate) {
final Object value = filter.getHandler(e);
try {
@ -397,12 +400,12 @@ class EventNodeImpl<T extends Event> implements EventNode<T> {
return;
}
}
if (!listenersCopy.isEmpty()) {
if (!listenersEmpty) {
for (EventListener<E> listener : listenersCopy) {
callListener(targetNode, listener, e);
}
}
if (!bindingsCopy.isEmpty()) {
if (!bindingsEmpty) {
for (Consumer<E> eConsumer : bindingsCopy) {
try {
eConsumer.accept(e);