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scheduler.cpp
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scheduler.cpp
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/**
* The Forgotten Server - a free and open-source MMORPG server emulator
* Copyright (C) 2019 Mark Samman <mark.samman@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "otpch.h"
#include "scheduler.h"
#include <boost/asio/post.hpp>
#include <memory>
uint32_t Scheduler::addEvent(SchedulerTask* task)
{
// check if the event has a valid id
if (task->getEventId() == 0) {
task->setEventId(++lastEventId);
}
boost::asio::post(io_context, [this, task]() {
// insert the event id in the list of active events
auto it = eventIdTimerMap.emplace(task->getEventId(), boost::asio::steady_timer{io_context});
auto& timer = it.first->second;
timer.expires_from_now(std::chrono::milliseconds(task->getDelay()));
timer.async_wait([this, task](const boost::system::error_code& error) {
eventIdTimerMap.erase(task->getEventId());
if (error == boost::asio::error::operation_aborted || getState() == THREAD_STATE_TERMINATED) {
// the timer has been manually canceled(timer->cancel()) or Scheduler::shutdown has been called
delete task;
return;
}
g_dispatcher.addTask(task);
});
});
return task->getEventId();
}
void Scheduler::stopEvent(uint32_t eventId)
{
if (eventId == 0) {
return;
}
boost::asio::post(io_context, [this, eventId]() {
// search the event id
auto it = eventIdTimerMap.find(eventId);
if (it != eventIdTimerMap.end()) {
it->second.cancel();
}
});
}
void Scheduler::shutdown()
{
setState(THREAD_STATE_TERMINATED);
boost::asio::post(io_context, [this]() {
// cancel all active timers
for (auto& it : eventIdTimerMap) {
it.second.cancel();
}
io_context.stop();
});
}
SchedulerTask* createSchedulerTaskWithStats(uint32_t delay, TaskFunc&& f, const std::string& description, const std::string& extraDescription)
{
return new SchedulerTask(delay, std::move(f), description, extraDescription);
}