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.
16 #include <folly/futures/Future.h>
17 #include <folly/futures/ThreadWheelTimekeeper.h>
18 #include <folly/Likely.h>
22 // Instantiate the most common Future types to save compile time
23 template class Future<Unit>;
24 template class Future<bool>;
25 template class Future<int>;
26 template class Future<int64_t>;
27 template class Future<std::string>;
28 template class Future<double>;
32 namespace folly { namespace futures {
34 Future<Unit> sleep(Duration dur, Timekeeper* tk) {
35 std::shared_ptr<Timekeeper> tks;
37 tks = folly::detail::getTimekeeperSingleton();
38 tk = DCHECK_NOTNULL(tks.get());
40 return tk->after(dur);