Timings v2
TODO: Add #isStopping to FullServerTickHandler#stopTiming in patch 191 expose isRunning
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Aikar
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32 changed files with 3030 additions and 400 deletions
369
paper-api/src/main/java/co/aikar/util/LoadingMap.java
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369
paper-api/src/main/java/co/aikar/util/LoadingMap.java
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/*
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* This file is licensed under the MIT License (MIT).
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*
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* Copyright (c) 2014 Daniel Ennis <http://aikar.co>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package co.aikar.util;
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import com.google.common.base.Preconditions;
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import java.lang.reflect.Constructor;
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import java.util.AbstractMap;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.IdentityHashMap;
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import java.util.Map;
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import java.util.Set;
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import java.util.function.Function;
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import org.jetbrains.annotations.NotNull;
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import org.jetbrains.annotations.Nullable;
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/**
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* Allows you to pass a Loader function that when a key is accessed that doesn't exists,
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* automatically loads the entry into the map by calling the loader Function.
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*
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* .get() Will only return null if the Loader can return null.
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*
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* You may pass any backing Map to use.
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*
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* This class is not thread safe and should be wrapped with Collections.synchronizedMap on the OUTSIDE of the LoadingMap if needed.
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*
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* Do not wrap the backing map with Collections.synchronizedMap.
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*
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* @param <K> Key
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* @param <V> Value
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*/
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@Deprecated(forRemoval = true)
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public class LoadingMap <K, V> extends AbstractMap<K, V> {
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private final Map<K, V> backingMap;
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private final java.util.function.Function<K, V> loader;
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/**
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* Initializes an auto loading map using specified loader and backing map
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* @param backingMap Map to wrap
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* @param loader Loader
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*/
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public LoadingMap(@NotNull Map<K, V> backingMap, @NotNull java.util.function.Function<K, V> loader) {
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this.backingMap = backingMap;
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this.loader = loader;
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}
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/**
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* Creates a new LoadingMap with the specified map and loader
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*
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* @param backingMap Actual map being used.
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* @param loader Loader to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map
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*/
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@NotNull
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public static <K, V> Map<K, V> of(@NotNull Map<K, V> backingMap, @NotNull Function<K, V> loader) {
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return new LoadingMap<>(backingMap, loader);
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}
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/**
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* Creates a LoadingMap with an auto instantiating loader.
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*
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* Will auto construct class of of Value when not found
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*
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* Since this uses Reflection, It is more effecient to define your own static loader
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* than using this helper, but if performance is not critical, this is easier.
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*
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* @param backingMap Actual map being used.
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* @param keyClass Class used for the K generic
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* @param valueClass Class used for the V generic
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map that auto instantiates on .get()
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*/
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@NotNull
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public static <K, V> Map<K, V> newAutoMap(@NotNull Map<K, V> backingMap, @Nullable final Class<? extends K> keyClass,
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@NotNull final Class<? extends V> valueClass) {
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return new LoadingMap<>(backingMap, new AutoInstantiatingLoader<>(keyClass, valueClass));
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}
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/**
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* Creates a LoadingMap with an auto instantiating loader.
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*
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* Will auto construct class of of Value when not found
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*
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* Since this uses Reflection, It is more effecient to define your own static loader
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* than using this helper, but if performance is not critical, this is easier.
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*
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* @param backingMap Actual map being used.
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* @param valueClass Class used for the V generic
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map that auto instantiates on .get()
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*/
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@NotNull
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public static <K, V> Map<K, V> newAutoMap(@NotNull Map<K, V> backingMap,
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@NotNull final Class<? extends V> valueClass) {
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return newAutoMap(backingMap, null, valueClass);
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}
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/**
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* @see #newAutoMap
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*
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* new Auto initializing map using a HashMap.
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*
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* @param keyClass Class used for the K generic
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* @param valueClass Class used for the V generic
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map that auto instantiates on .get()
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*/
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@NotNull
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public static <K, V> Map<K, V> newHashAutoMap(@Nullable final Class<? extends K> keyClass, @NotNull final Class<? extends V> valueClass) {
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return newAutoMap(new HashMap<>(), keyClass, valueClass);
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}
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/**
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* @see #newAutoMap
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*
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* new Auto initializing map using a HashMap.
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*
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* @param valueClass Class used for the V generic
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map that auto instantiates on .get()
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*/
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@NotNull
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public static <K, V> Map<K, V> newHashAutoMap(@NotNull final Class<? extends V> valueClass) {
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return newHashAutoMap(null, valueClass);
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}
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/**
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* @see #newAutoMap
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*
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* new Auto initializing map using a HashMap.
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*
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* @param keyClass Class used for the K generic
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* @param valueClass Class used for the V generic
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* @param initialCapacity Initial capacity to use
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* @param loadFactor Load factor to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map that auto instantiates on .get()
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*/
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@NotNull
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public static <K, V> Map<K, V> newHashAutoMap(@Nullable final Class<? extends K> keyClass, @NotNull final Class<? extends V> valueClass, int initialCapacity, float loadFactor) {
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return newAutoMap(new HashMap<>(initialCapacity, loadFactor), keyClass, valueClass);
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}
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/**
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* @see #newAutoMap
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*
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* new Auto initializing map using a HashMap.
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*
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* @param valueClass Class used for the V generic
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* @param initialCapacity Initial capacity to use
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* @param loadFactor Load factor to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map that auto instantiates on .get()
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*/
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@NotNull
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public static <K, V> Map<K, V> newHashAutoMap(@NotNull final Class<? extends V> valueClass, int initialCapacity, float loadFactor) {
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return newHashAutoMap(null, valueClass, initialCapacity, loadFactor);
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}
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/**
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* Initializes an auto loading map using a HashMap
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*
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* @param loader Loader to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map
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*/
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@NotNull
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public static <K, V> Map<K, V> newHashMap(@NotNull Function<K, V> loader) {
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return new LoadingMap<>(new HashMap<>(), loader);
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}
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/**
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* Initializes an auto loading map using a HashMap
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*
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* @param loader Loader to use
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* @param initialCapacity Initial capacity to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map
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*/
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@NotNull
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public static <K, V> Map<K, V> newHashMap(@NotNull Function<K, V> loader, int initialCapacity) {
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return new LoadingMap<>(new HashMap<>(initialCapacity), loader);
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}
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/**
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* Initializes an auto loading map using a HashMap
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*
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* @param loader Loader to use
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* @param initialCapacity Initial capacity to use
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* @param loadFactor Load factor to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map
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*/
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@NotNull
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public static <K, V> Map<K, V> newHashMap(@NotNull Function<K, V> loader, int initialCapacity, float loadFactor) {
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return new LoadingMap<>(new HashMap<>(initialCapacity, loadFactor), loader);
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}
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/**
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* Initializes an auto loading map using an Identity HashMap
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*
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* @param loader Loader to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map
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*/
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@NotNull
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public static <K, V> Map<K, V> newIdentityHashMap(@NotNull Function<K, V> loader) {
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return new LoadingMap<>(new IdentityHashMap<>(), loader);
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}
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/**
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* Initializes an auto loading map using an Identity HashMap
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*
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* @param loader Loader to use
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* @param initialCapacity Initial capacity to use
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* @param <K> Key Type of the Map
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* @param <V> Value Type of the Map
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* @return Map
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*/
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@NotNull
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public static <K, V> Map<K, V> newIdentityHashMap(@NotNull Function<K, V> loader, int initialCapacity) {
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return new LoadingMap<>(new IdentityHashMap<>(initialCapacity), loader);
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}
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@Override
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public int size() {return backingMap.size();}
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@Override
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public boolean isEmpty() {return backingMap.isEmpty();}
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@Override
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public boolean containsKey(@Nullable Object key) {return backingMap.containsKey(key);}
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@Override
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public boolean containsValue(@Nullable Object value) {return backingMap.containsValue(value);}
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@Nullable
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@Override
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public V get(@Nullable Object key) {
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V v = backingMap.get(key);
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if (v != null) {
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return v;
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}
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return backingMap.computeIfAbsent((K) key, loader);
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}
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@Nullable
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public V put(@Nullable K key, @Nullable V value) {return backingMap.put(key, value);}
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@Nullable
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@Override
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public V remove(@Nullable Object key) {return backingMap.remove(key);}
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public void putAll(@NotNull Map<? extends K, ? extends V> m) {backingMap.putAll(m);}
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@Override
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public void clear() {backingMap.clear();}
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@NotNull
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@Override
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public Set<K> keySet() {return backingMap.keySet();}
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@NotNull
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@Override
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public Collection<V> values() {return backingMap.values();}
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@Override
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public boolean equals(@Nullable Object o) {return backingMap.equals(o);}
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@Override
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public int hashCode() {return backingMap.hashCode();}
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@NotNull
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@Override
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public Set<Entry<K, V>> entrySet() {
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return backingMap.entrySet();
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}
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@NotNull
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public LoadingMap<K, V> clone() {
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return new LoadingMap<>(backingMap, loader);
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}
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private static class AutoInstantiatingLoader<K, V> implements Function<K, V> {
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final Constructor<? extends V> constructor;
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private final Class<? extends V> valueClass;
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AutoInstantiatingLoader(@Nullable Class<? extends K> keyClass, @NotNull Class<? extends V> valueClass) {
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try {
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this.valueClass = valueClass;
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if (keyClass != null) {
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constructor = valueClass.getConstructor(keyClass);
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} else {
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constructor = null;
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}
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} catch (NoSuchMethodException e) {
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throw new IllegalStateException(
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valueClass.getName() + " does not have a constructor for " + (keyClass != null ? keyClass.getName() : null));
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}
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}
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@NotNull
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@Override
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public V apply(@Nullable K input) {
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try {
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return (constructor != null ? constructor.newInstance(input) : valueClass.newInstance());
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} catch (Exception e) {
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throw new ExceptionInInitializerError(e);
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}
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}
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@Override
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public int hashCode() {
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return super.hashCode();
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}
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@Override
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public boolean equals(Object object) {
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return false;
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}
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}
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/**
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* Due to java stuff, you will need to cast it to (Function) for some cases
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*
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* @param <T> Type
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*/
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public abstract static class Feeder <T> implements Function<T, T> {
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@Nullable
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@Override
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public T apply(@Nullable Object input) {
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return apply();
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}
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@Nullable
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public abstract T apply();
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}
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}
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