/**
* 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;
import java.lang.annotation.*;
import io.reactivex.schedulers.Schedulers;
/**
* Indicates what kind of scheduler the class or method uses.
* <p>
* Constants are provided for instances from {@link Schedulers} as well as values for
* {@linkplain #NONE not using a scheduler} and {@linkplain #CUSTOM a manually-specified scheduler}.
* Libraries providing their own values should namespace them with their base package name followed
* by a colon ({@code :}) and then a human-readable name (e.g., {@code com.example:ui-thread}).
* @since 2.0
*/
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Target({ElementType.METHOD, ElementType.TYPE})
public @interface SchedulerSupport {
/**
* A special value indicating the operator/class doesn't use schedulers.
*/
String NONE = "none";
/**
* A special value indicating the operator/class requires a scheduler to be manually specified.
*/
String CUSTOM = "custom";
// Built-in schedulers:
/**
* The operator/class runs on RxJava's {@linkplain Schedulers#computation() computation
* scheduler} or takes timing information from it.
*/
String COMPUTATION = "io.reactivex:computation";
/**
* The operator/class runs on RxJava's {@linkplain Schedulers#io() I/O scheduler} or takes
* timing information from it.
*/
String IO = "io.reactivex:io";
/**
* The operator/class runs on RxJava's {@linkplain Schedulers#newThread() new thread scheduler}
* or takes timing information from it.
*/
String NEW_THREAD = "io.reactivex:new-thread";
/**
* The operator/class runs on RxJava's {@linkplain Schedulers#trampoline() trampoline scheduler}
* or takes timing information from it.
*/
String TRAMPOLINE = "io.reactivex:trampoline";
/**
* The operator/class runs on RxJava's {@linkplain Schedulers#single() single scheduler}
* or takes timing information from it.
* @since 2.0.8 - experimental
*/
@Experimental
String SINGLE = "io.reactivex:single";
/**
* The kind of scheduler the class or method uses.
* @return the name of the scheduler the class or method uses
*/
String value();
}