1/*
2 * Copyright 2017-present Facebook, Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#pragma once
18
19#include <folly/executors/IOExecutor.h>
20#include <folly/fibers/FiberManagerMap.h>
21
22namespace folly {
23
24/**
25 * @class FiberIOExecutor
26 * @brief An IOExecutor that executes funcs under mapped fiber context
27 *
28 * A FiberIOExecutor wraps an IOExecutor, but executes funcs on the FiberManager
29 * mapped to the underlying IOExector's event base.
30 */
31class FiberIOExecutor : public IOExecutor {
32 public:
33 explicit FiberIOExecutor(
34 const std::shared_ptr<IOExecutor>& ioExecutor,
35 fibers::FiberManager::Options opts = fibers::FiberManager::Options())
36 : ioExecutor_(ioExecutor), options_(std::move(opts)) {}
37
38 virtual void add(folly::Function<void()> f) override {
39 auto eventBase = ioExecutor_->getEventBase();
40 folly::fibers::getFiberManager(*eventBase, options_).add(std::move(f));
41 }
42
43 virtual folly::EventBase* getEventBase() override {
44 return ioExecutor_->getEventBase();
45 }
46
47 private:
48 std::shared_ptr<IOExecutor> ioExecutor_;
49 fibers::FiberManager::Options options_;
50};
51
52} // namespace folly
53