2 * Copyright 2016 Facebook, Inc.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include <folly/futures/Future.h>
20 #include <folly/futures/Timekeeper.h>
21 #include <folly/io/async/EventBase.h>
22 #include <folly/io/async/HHWheelTimer.h>
27 /// The default Timekeeper implementation which uses a HHWheelTimer on an
28 /// EventBase in a dedicated thread. Users needn't deal with this directly, it
29 /// is used by default by Future methods that work with timeouts.
30 class ThreadWheelTimekeeper : public Timekeeper {
32 /// But it doesn't *have* to be a singleton.
33 ThreadWheelTimekeeper();
34 ~ThreadWheelTimekeeper() override;
36 /// Implement the Timekeeper interface
37 /// This future *does* complete on the timer thread. You should almost
38 /// certainly follow it with a via() call or the accuracy of other timers
40 Future<Unit> after(Duration) override;
43 folly::EventBase eventBase_;
45 HHWheelTimer::UniquePtr wheelTimer_;