/**
* 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.internal.operators.maybe;
import java.util.concurrent.
TimeUnit;
import java.util.concurrent.atomic.
AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.internal.disposables.
DisposableHelper;
/**
* Signals a {@code 0L} after the specified delay.
*/
public final class
MaybeTimer extends
Maybe<
Long> {
final long
delay;
final
TimeUnit unit;
final
Scheduler scheduler;
public
MaybeTimer(long
delay,
TimeUnit unit,
Scheduler scheduler) {
this.
delay =
delay;
this.
unit =
unit;
this.
scheduler =
scheduler;
}
@
Override
protected void
subscribeActual(final
MaybeObserver<? super
Long>
observer) {
TimerDisposable parent = new
TimerDisposable(
observer);
observer.
onSubscribe(
parent);
parent.
setFuture(
scheduler.
scheduleDirect(
parent,
delay,
unit));
}
static final class
TimerDisposable extends
AtomicReference<
Disposable> implements
Disposable,
Runnable {
private static final long
serialVersionUID = 2875964065294031672L;
final
MaybeObserver<? super
Long>
downstream;
TimerDisposable(final
MaybeObserver<? super
Long>
downstream) {
this.
downstream =
downstream;
}
@
Override
public void
run() {
downstream.
onSuccess(0L);
}
@
Override
public void
dispose() {
DisposableHelper.
dispose(this);
}
@
Override
public boolean
isDisposed() {
return
DisposableHelper.
isDisposed(
get());
}
void
setFuture(
Disposable d) {
DisposableHelper.
replace(this,
d);
}
}
}