/**
* 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.observable;
import java.util.concurrent.
TimeUnit;
import java.util.concurrent.atomic.
AtomicReference;
import io.reactivex.*;
import io.reactivex.
Scheduler.
Worker;
import io.reactivex.disposables.
Disposable;
import io.reactivex.internal.disposables.*;
import io.reactivex.internal.schedulers.
TrampolineScheduler;
public final class
ObservableInterval extends
Observable<
Long> {
final
Scheduler scheduler;
final long
initialDelay;
final long
period;
final
TimeUnit unit;
public
ObservableInterval(long
initialDelay, long
period,
TimeUnit unit,
Scheduler scheduler) {
this.
initialDelay =
initialDelay;
this.
period =
period;
this.
unit =
unit;
this.
scheduler =
scheduler;
}
@
Override
public void
subscribeActual(
Observer<? super
Long>
observer) {
IntervalObserver is = new
IntervalObserver(
observer);
observer.
onSubscribe(
is);
Scheduler sch =
scheduler;
if (
sch instanceof
TrampolineScheduler) {
Worker worker =
sch.
createWorker();
is.
setResource(
worker);
worker.
schedulePeriodically(
is,
initialDelay,
period,
unit);
} else {
Disposable d =
sch.
schedulePeriodicallyDirect(
is,
initialDelay,
period,
unit);
is.
setResource(
d);
}
}
static final class
IntervalObserver
extends
AtomicReference<
Disposable>
implements
Disposable,
Runnable {
private static final long
serialVersionUID = 346773832286157679L;
final
Observer<? super
Long>
downstream;
long
count;
IntervalObserver(
Observer<? super
Long>
downstream) {
this.
downstream =
downstream;
}
@
Override
public void
dispose() {
DisposableHelper.
dispose(this);
}
@
Override
public boolean
isDisposed() {
return
get() ==
DisposableHelper.
DISPOSED;
}
@
Override
public void
run() {
if (
get() !=
DisposableHelper.
DISPOSED) {
downstream.
onNext(
count++);
}
}
public void
setResource(
Disposable d) {
DisposableHelper.
setOnce(this,
d);
}
}
}