2 * Copyright 2014 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/experimental/wangle/concurrent/IOExecutor.h>
18 #include <folly/experimental/Singleton.h>
19 #include <folly/experimental/wangle/concurrent/GlobalExecutor.h>
21 using folly::Singleton;
22 using folly::wangle::IOExecutor;
26 Singleton<std::atomic<IOExecutor*>> globalIOExecutorSingleton(
29 return new std::atomic<IOExecutor*>(nullptr);
34 namespace folly { namespace wangle {
36 IOExecutor::~IOExecutor() {
39 getSingleton()->compare_exchange_strong(thisCopy, nullptr);
40 } catch (const std::runtime_error& e) {
41 // The global IOExecutor singleton was already destructed so doesn't need to
42 // be restored. Ignore.
46 std::atomic<IOExecutor*>* IOExecutor::getSingleton() {
47 return Singleton<std::atomic<IOExecutor*>>::get("GlobalIOExecutor");