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.
/**
 * 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.subscriptions;

import java.util.concurrent.atomic.AtomicLong;

import io.reactivex.internal.fuseable.QueueSubscription;

Base class extending AtomicLong (wip or request accounting) and QueueSubscription (fusion).
Type parameters:
<T> – the value type/**
 * Base class extending AtomicLong (wip or request accounting) and QueueSubscription (fusion).
 *
 * @param <T> the value type
 */
public abstract class BasicQueueSubscription<T> extends AtomicLong implements QueueSubscription<T> {

    private static final long serialVersionUID = -6671519529404341862L;

    @Override
    public final boolean offer(T e) {
        throw new UnsupportedOperationException("Should not be called!");
    }

    @Override
    public final boolean offer(T v1, T v2) {
        throw new UnsupportedOperationException("Should not be called!");
    }
}