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/**
* Copyright (C) 2015 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/executor/async_timer_mock.h"
#include "mongo/stdx/memory.h"
namespace mongo {
namespace executor {
namespace {
const Milliseconds kZeroMilliseconds = Milliseconds(0);
} // namespace
AsyncTimerMockImpl::AsyncTimerMockImpl(Milliseconds expiration) : _timeLeft(expiration) {}
void AsyncTimerMockImpl::cancel() {
_callAllHandlers(asio::error::operation_aborted);
}
void AsyncTimerMockImpl::asyncWait(AsyncTimerInterface::Handler handler) {
// If we have expired, run handler now instead of storing.
if (_timeLeft == kZeroMilliseconds) {
// Callbacks scheduled for now will fire immediately, synchronously.
handler(std::error_code());
} else {
_handlers.push_back(handler);
}
}
bool AsyncTimerMockImpl::fastForward(Milliseconds time) {
if (time >= _timeLeft) {
_timeLeft = kZeroMilliseconds;
_expire();
} else {
_timeLeft -= time;
}
return _timeLeft > kZeroMilliseconds;
}
Milliseconds AsyncTimerMockImpl::timeLeft() {
return _timeLeft;
}
void AsyncTimerMockImpl::_callAllHandlers(std::error_code ec) {
for (auto elem = _handlers.begin(); elem != _handlers.end(); elem++) {
const auto& handler = *elem;
handler(ec);
}
_handlers.clear();
}
void AsyncTimerMockImpl::_expire() {
_callAllHandlers(std::error_code());
}
AsyncTimerMock::AsyncTimerMock(std::shared_ptr<AsyncTimerMockImpl> timer) : _timer(timer) {}
void AsyncTimerMock::cancel() {
_timer->cancel();
}
void AsyncTimerMock::asyncWait(AsyncTimerInterface::Handler handler) {
_timer->asyncWait(handler);
}
std::unique_ptr<AsyncTimerInterface> AsyncTimerFactoryMock::make(Milliseconds expiration) {
return make(nullptr, expiration);
}
std::unique_ptr<AsyncTimerInterface> AsyncTimerFactoryMock::make(asio::io_service* io_service,
Milliseconds expiration) {
stdx::lock_guard<stdx::mutex> lk(_timersMutex);
auto elem = _timers.emplace(std::make_shared<AsyncTimerMockImpl>(expiration));
return stdx::make_unique<AsyncTimerMock>(*elem.first);
}
void AsyncTimerFactoryMock::fastForward(Milliseconds time) {
stdx::lock_guard<stdx::mutex> lk(_timersMutex);
// erase after iterating to be safe
std::unordered_set<std::shared_ptr<AsyncTimerMockImpl>> expired;
for (auto elem = _timers.begin(); elem != _timers.end(); elem++) {
auto timer = *elem;
// If timer has expired, register it for removal from our set.
if (!timer->fastForward(time)) {
expired.insert(timer);
}
}
for (auto elem = expired.begin(); elem != expired.end(); elem++) {
_timers.erase(*elem);
}
}
} // namespace executor
} // namespace mongo
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