Seastar
High performance C++ framework for concurrent servers
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later.hh
1/*
2 * This file is open source software, licensed to you under the terms
3 * of the Apache License, Version 2.0 (the "License"). See the NOTICE file
4 * distributed with this work for additional information regarding copyright
5 * ownership. You may not use this file except in compliance with the License.
6 *
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing,
12 * software distributed under the License is distributed on an
13 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14 * KIND, either express or implied. See the License for the
15 * specific language governing permissions and limitations
16 * under the License.
17 */
18
19/*
20 * Copyright (C) 2020 ScyllaDB.
21 */
22
23
24#pragma once
25
26#include <seastar/core/future.hh>
27
28namespace seastar {
29
32
34inline
36 return make_ready_future<>();
37}
38
45future<> yield() noexcept;
46
56inline
57future<> maybe_yield() noexcept {
58 if (need_preempt()) {
59 return yield();
60 } else {
61 return make_ready_future<>();
62 }
63}
64
75
79[[deprecated("Use yield() or check_for_io_immediately()")]]
80future<> later() noexcept;
81
83
84} // namespace seastar
A representation of a possibly not-yet-computed value.
Definition: future.hh:1240
future maybe_yield() noexcept
Definition: later.hh:57
future check_for_io_immediately() noexcept
future now()
Returns a ready future.
Definition: later.hh:35
future yield() noexcept
Returns a future which is not ready but is scheduled to resolve soon.
future later() noexcept
Returns a future which is not ready but is scheduled to resolve soon.
Seastar API namespace.
Definition: abort_on_ebadf.hh:26