/**
* 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.disposables;
import java.util.concurrent.atomic.
AtomicReference;
import io.reactivex.annotations.
NonNull;
import io.reactivex.internal.functions.
ObjectHelper;
/**
* Base class for Disposable containers that manage some other type that
* has to be run when the container is disposed.
*
* @param <T> the type contained
*/
abstract class
ReferenceDisposable<T> extends
AtomicReference<T> implements
Disposable {
private static final long
serialVersionUID = 6537757548749041217L;
ReferenceDisposable(T
value) {
super(
ObjectHelper.
requireNonNull(
value, "value is null"));
}
protected abstract void
onDisposed(@
NonNull T
value);
@
Override
public final void
dispose() {
T
value =
get();
if (
value != null) {
value =
getAndSet(null);
if (
value != null) {
onDisposed(
value);
}
}
}
@
Override
public final boolean
isDisposed() {
return
get() == null;
}
}