/**
* 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.annotations;
/**
* Enumeration for various kinds of backpressure support.
* @since 2.0
*/
public enum BackpressureKind {
/**
* The backpressure-related requests pass through this operator without change.
*/
PASS_THROUGH,
/**
* The operator fully supports backpressure and may coordinate downstream requests
* with upstream requests through batching, arbitration or by other means.
*/
FULL,
/**
* The operator performs special backpressure management; see the associated javadoc.
*/
SPECIAL,
/**
* The operator requests Long.MAX_VALUE from upstream but respects the backpressure
* of the downstream.
*/
UNBOUNDED_IN,
/**
* The operator will emit a MissingBackpressureException if the downstream didn't request
* enough or in time.
*/
ERROR,
/**
* The operator ignores all kinds of backpressure and may overflow the downstream.
*/
NONE
}