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/executors/QueuedImmediateExecutor.h>
18
19#include <folly/Indestructible.h>
20
21namespace folly {
22
23QueuedImmediateExecutor& QueuedImmediateExecutor::instance() {
24 static auto instance = Indestructible<QueuedImmediateExecutor>{};
25 return *instance;
26}
27
28void QueuedImmediateExecutor::add(Func callback) {
29 auto& q = *q_;
30 q.push(std::move(callback));
31 if (q.size() == 1) {
32 while (!q.empty()) {
33 q.front()();
34 q.pop();
35 }
36 }
37}
38
39} // namespace folly
40