| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 "lib/PeriodicTask.h" |
| #include <boost/date_time/posix_time/posix_time.hpp> |
| |
| namespace pulsar { |
| |
| void PeriodicTask::start() { |
| if (state_ != Pending) { |
| return; |
| } |
| state_ = Ready; |
| if (periodMs_ >= 0) { |
| std::weak_ptr<PeriodicTask> weakSelf{shared_from_this()}; |
| timer_.expires_from_now(boost::posix_time::millisec(periodMs_)); |
| timer_.async_wait([weakSelf](const ErrorCode& ec) { |
| auto self = weakSelf.lock(); |
| if (self) { |
| self->handleTimeout(ec); |
| } |
| }); |
| } |
| } |
| |
| void PeriodicTask::stop() { |
| State state = Ready; |
| if (!state_.compare_exchange_strong(state, Closing)) { |
| return; |
| } |
| timer_.cancel(); |
| state_ = Pending; |
| } |
| |
| void PeriodicTask::handleTimeout(const ErrorCode& ec) { |
| if (state_ != Ready || ec.value() == boost::system::errc::operation_canceled) { |
| return; |
| } |
| |
| callback_(ec); |
| |
| // state_ may be changed in handleTimeout, so we check state_ again |
| if (state_ == Ready) { |
| auto self = shared_from_this(); |
| timer_.expires_from_now(boost::posix_time::millisec(periodMs_)); |
| timer_.async_wait([this, self](const ErrorCode& ec) { handleTimeout(ec); }); |
| } |
| } |
| |
| } // namespace pulsar |