123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475 |
- /*
- * Copyright 2011-present Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- #include <folly/TimeoutQueue.h>
- #include <algorithm>
- #include <vector>
- namespace folly {
- TimeoutQueue::Id
- TimeoutQueue::add(int64_t now, int64_t delay, Callback callback) {
- Id id = nextId_++;
- timeouts_.insert({id, now + delay, -1, std::move(callback)});
- return id;
- }
- TimeoutQueue::Id
- TimeoutQueue::addRepeating(int64_t now, int64_t interval, Callback callback) {
- Id id = nextId_++;
- timeouts_.insert({id, now + interval, interval, std::move(callback)});
- return id;
- }
- int64_t TimeoutQueue::nextExpiration() const {
- return (
- timeouts_.empty() ? std::numeric_limits<int64_t>::max()
- : timeouts_.get<BY_EXPIRATION>().begin()->expiration);
- }
- bool TimeoutQueue::erase(Id id) {
- return timeouts_.get<BY_ID>().erase(id);
- }
- int64_t TimeoutQueue::runInternal(int64_t now, bool onceOnly) {
- auto& byExpiration = timeouts_.get<BY_EXPIRATION>();
- int64_t nextExp;
- do {
- const auto end = byExpiration.upper_bound(now);
- std::vector<Event> expired;
- std::move(byExpiration.begin(), end, std::back_inserter(expired));
- byExpiration.erase(byExpiration.begin(), end);
- for (const auto& event : expired) {
- // Reinsert if repeating, do this before executing callbacks
- // so the callbacks have a chance to call erase
- if (event.repeatInterval >= 0) {
- timeouts_.insert({event.id,
- now + event.repeatInterval,
- event.repeatInterval,
- event.callback});
- }
- }
- // Call callbacks
- for (const auto& event : expired) {
- event.callback(event.id, now);
- }
- nextExp = nextExpiration();
- } while (!onceOnly && nextExp <= now);
- return nextExp;
- }
- } // namespace folly
|