1/*
2 * Copyright 2014-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#include <folly/futures/Future.h>
18#include <folly/Likely.h>
19#include <folly/SingletonThreadLocal.h>
20#include <folly/futures/ThreadWheelTimekeeper.h>
21
22namespace folly {
23
24// Instantiate the most common Future types to save compile time
25template class SemiFuture<Unit>;
26template class SemiFuture<bool>;
27template class SemiFuture<int>;
28template class SemiFuture<int64_t>;
29template class SemiFuture<std::string>;
30template class SemiFuture<double>;
31template class Future<Unit>;
32template class Future<bool>;
33template class Future<int>;
34template class Future<int64_t>;
35template class Future<std::string>;
36template class Future<double>;
37} // namespace folly
38
39namespace folly {
40namespace futures {
41
42Future<Unit> sleep(Duration dur, Timekeeper* tk) {
43 std::shared_ptr<Timekeeper> tks;
44 if (LIKELY(!tk)) {
45 tks = folly::detail::getTimekeeperSingleton();
46 tk = tks.get();
47 }
48
49 if (UNLIKELY(!tk)) {
50 return makeFuture<Unit>(FutureNoTimekeeper());
51 }
52
53 return tk->after(dur);
54}
55
56} // namespace futures
57} // namespace folly
58