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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
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/*
* Copyright (c) 2016-present, RxJava Contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is
* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
* the License for the specific language governing permissions and limitations under the License.
*/
package io.reactivex.rxjava3.internal.schedulers;
import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicReference;
import io.reactivex.rxjava3.disposables.Disposable;
import io.reactivex.rxjava3.internal.functions.Functions;
import io.reactivex.rxjava3.schedulers.SchedulerRunnableIntrospection;
/**
* Base functionality for direct tasks that manage a runnable and cancellation/completion.
* @since 2.0.8
*/
abstract class AbstractDirectTask
extends AtomicReference>
implements Disposable, SchedulerRunnableIntrospection {
private static final long serialVersionUID = 1811839108042568751L;
protected final Runnable runnable;
protected final boolean interruptOnCancel;
protected Thread runner;
protected static final FutureTask FINISHED = new FutureTask<>(Functions.EMPTY_RUNNABLE, null);
protected static final FutureTask DISPOSED = new FutureTask<>(Functions.EMPTY_RUNNABLE, null);
AbstractDirectTask(Runnable runnable, boolean interruptOnCancel) {
this.runnable = runnable;
this.interruptOnCancel = interruptOnCancel;
}
@Override
public final void dispose() {
Future> f = get();
if (f != FINISHED && f != DISPOSED) {
if (compareAndSet(f, DISPOSED)) {
if (f != null) {
cancelFuture(f);
}
}
}
}
@Override
public final boolean isDisposed() {
Future> f = get();
return f == FINISHED || f == DISPOSED;
}
public final void setFuture(Future> future) {
for (;;) {
Future> f = get();
if (f == FINISHED) {
break;
}
if (f == DISPOSED) {
cancelFuture(future);
break;
}
if (compareAndSet(f, future)) {
break;
}
}
}
private void cancelFuture(Future> future) {
if (runner == Thread.currentThread()) {
future.cancel(false);
} else {
future.cancel(interruptOnCancel);
}
}
@Override
public Runnable getWrappedRunnable() {
return runnable;
}
@Override
public String toString() {
String status;
Future> f = get();
if (f == FINISHED) {
status = "Finished";
} else if (f == DISPOSED) {
status = "Disposed";
} else {
Thread r = runner;
if (r != null) {
status = "Running on " + runner;
} else {
status = "Waiting";
}
}
return getClass().getSimpleName() + "[" + status + "]";
}
}
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