Rabbit-R1/android (non root)/java/sources/androidx/concurrent/futures/CallbackToFutureAdapter.java
2024-05-21 17:08:36 -04:00

188 lines
6.4 KiB
Java

package androidx.concurrent.futures;
import com.google.common.util.concurrent.ListenableFuture;
import java.lang.ref.WeakReference;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/* loaded from: classes.dex */
public final class CallbackToFutureAdapter {
/* loaded from: classes.dex */
public interface Resolver<T> {
Object attachCompleter(Completer<T> completer) throws Exception;
}
private CallbackToFutureAdapter() {
}
public static <T> ListenableFuture<T> getFuture(Resolver<T> resolver) {
Completer<T> completer = new Completer<>();
SafeFuture<T> safeFuture = new SafeFuture<>(completer);
completer.future = safeFuture;
completer.tag = resolver.getClass();
try {
Object attachCompleter = resolver.attachCompleter(completer);
if (attachCompleter != null) {
completer.tag = attachCompleter;
}
} catch (Exception e) {
safeFuture.setException(e);
}
return safeFuture;
}
/* JADX INFO: Access modifiers changed from: private */
/* loaded from: classes.dex */
public static final class SafeFuture<T> implements ListenableFuture<T> {
final WeakReference<Completer<T>> completerWeakReference;
private final AbstractResolvableFuture<T> delegate = new AbstractResolvableFuture<T>() { // from class: androidx.concurrent.futures.CallbackToFutureAdapter.SafeFuture.1
@Override // androidx.concurrent.futures.AbstractResolvableFuture
protected String pendingToString() {
Completer<T> completer = SafeFuture.this.completerWeakReference.get();
return completer == null ? "Completer object has been garbage collected, future will fail soon" : "tag=[" + completer.tag + "]";
}
};
SafeFuture(Completer<T> completer) {
this.completerWeakReference = new WeakReference<>(completer);
}
@Override // java.util.concurrent.Future
public boolean cancel(boolean z) {
Completer<T> completer = this.completerWeakReference.get();
boolean cancel = this.delegate.cancel(z);
if (cancel && completer != null) {
completer.fireCancellationListeners();
}
return cancel;
}
boolean cancelWithoutNotifyingCompleter(boolean z) {
return this.delegate.cancel(z);
}
boolean set(T t) {
return this.delegate.set(t);
}
boolean setException(Throwable th) {
return this.delegate.setException(th);
}
@Override // java.util.concurrent.Future
public boolean isCancelled() {
return this.delegate.isCancelled();
}
@Override // java.util.concurrent.Future
public boolean isDone() {
return this.delegate.isDone();
}
@Override // java.util.concurrent.Future
public T get() throws InterruptedException, ExecutionException {
return this.delegate.get();
}
@Override // java.util.concurrent.Future
public T get(long j, TimeUnit timeUnit) throws InterruptedException, ExecutionException, TimeoutException {
return this.delegate.get(j, timeUnit);
}
@Override // com.google.common.util.concurrent.ListenableFuture
public void addListener(Runnable runnable, Executor executor) {
this.delegate.addListener(runnable, executor);
}
public String toString() {
return this.delegate.toString();
}
}
/* loaded from: classes.dex */
public static final class Completer<T> {
private boolean attemptedSetting;
private ResolvableFuture<Void> cancellationFuture = ResolvableFuture.create();
SafeFuture<T> future;
Object tag;
private void setCompletedNormally() {
this.tag = null;
this.future = null;
this.cancellationFuture = null;
}
Completer() {
}
public boolean set(T t) {
this.attemptedSetting = true;
SafeFuture<T> safeFuture = this.future;
boolean z = safeFuture != null && safeFuture.set(t);
if (z) {
setCompletedNormally();
}
return z;
}
public boolean setException(Throwable th) {
this.attemptedSetting = true;
SafeFuture<T> safeFuture = this.future;
boolean z = safeFuture != null && safeFuture.setException(th);
if (z) {
setCompletedNormally();
}
return z;
}
public boolean setCancelled() {
this.attemptedSetting = true;
SafeFuture<T> safeFuture = this.future;
boolean z = safeFuture != null && safeFuture.cancelWithoutNotifyingCompleter(true);
if (z) {
setCompletedNormally();
}
return z;
}
public void addCancellationListener(Runnable runnable, Executor executor) {
ResolvableFuture<Void> resolvableFuture = this.cancellationFuture;
if (resolvableFuture != null) {
resolvableFuture.addListener(runnable, executor);
}
}
void fireCancellationListeners() {
this.tag = null;
this.future = null;
this.cancellationFuture.set(null);
}
protected void finalize() {
ResolvableFuture<Void> resolvableFuture;
SafeFuture<T> safeFuture = this.future;
if (safeFuture != null && !safeFuture.isDone()) {
safeFuture.setException(new FutureGarbageCollectedException("The completer object was garbage collected - this future would otherwise never complete. The tag was: " + this.tag));
}
if (this.attemptedSetting || (resolvableFuture = this.cancellationFuture) == null) {
return;
}
resolvableFuture.set(null);
}
}
/* loaded from: classes.dex */
static final class FutureGarbageCollectedException extends Throwable {
FutureGarbageCollectedException(String str) {
super(str);
}
@Override // java.lang.Throwable
public synchronized Throwable fillInStackTrace() {
return this;
}
}
}