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/*
* This file is part of fabric-loom, licensed under the MIT License (MIT).
*
* Copyright (c) 2016, 2017, 2018 FabricMC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.fabricmc.loom.util;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.function.Function;
import java.util.stream.Collectors;
public class ThreadingUtils {
public static <T> void run(Collection<T> values, UnsafeConsumer<T> action) {
run(values.stream()
.<UnsafeRunnable>map(t -> () -> action.accept(t))
.collect(Collectors.toList()));
}
public static void run(UnsafeRunnable... jobs) {
run(Arrays.asList(jobs));
}
public static void run(Collection<UnsafeRunnable> jobs) {
try {
ExecutorService service = Executors.newFixedThreadPool(Math.min(jobs.size(), Runtime.getRuntime().availableProcessors() / 2));
List<Future<?>> futures = new LinkedList<>();
for (UnsafeRunnable runnable : jobs) {
futures.add(service.submit(() -> {
try {
runnable.run();
} catch (Throwable throwable) {
throw new RuntimeException(throwable);
}
}));
}
for (Future<?> future : futures) {
future.get();
}
service.shutdownNow();
} catch (InterruptedException | ExecutionException e) {
throw new RuntimeException(e);
}
}
public static <T, R> List<R> get(Collection<T> values, Function<T, R> action) {
return get(values.stream()
.<UnsafeCallable<R>>map(t -> () -> action.apply(t))
.collect(Collectors.toList()));
}
@SafeVarargs
public static <T> List<T> get(UnsafeCallable<T>... jobs) {
return get(Arrays.asList(jobs));
}
public static <T> List<T> get(Collection<UnsafeCallable<T>> jobs) {
try {
ExecutorService service = Executors.newFixedThreadPool(Math.min(jobs.size(), Runtime.getRuntime().availableProcessors() / 2));
List<Future<T>> futures = new LinkedList<>();
List<T> result = new ArrayList<>();
for (UnsafeCallable<T> runnable : jobs) {
futures.add(service.submit(() -> {
try {
return runnable.call();
} catch (Throwable throwable) {
throw new RuntimeException(throwable);
}
}));
}
for (Future<T> future : futures) {
result.add(future.get());
}
service.shutdownNow();
return result;
} catch (InterruptedException | ExecutionException e) {
throw new RuntimeException(e);
}
}
public interface UnsafeRunnable {
void run() throws Throwable;
}
public interface UnsafeCallable<T> {
T call() throws Throwable;
}
public interface UnsafeConsumer<T> {
void accept(T value) throws Throwable;
}
}
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