timemeasurement.cpp
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/* Copyright (C) 2019
*
* This file is part of the osdev components suite
*
* 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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include "timemeasurement.h"
using namespace osdev::components::mqtt::measurement;
TimeMeasurement::TimeMeasurement(const std::string& id, const TimeMeasurementCallback& cb, bool measureOnDestruction)
: m_id(id)
, m_start(std::chrono::steady_clock::now())
, m_last(m_start)
, m_callback(cb)
, m_measureOnDestruction(measureOnDestruction)
{
}
TimeMeasurement::~TimeMeasurement()
{
if (m_measureOnDestruction) {
this->measure();
}
}
void TimeMeasurement::set()
{
m_last = std::chrono::steady_clock::now();
}
void TimeMeasurement::measure()
{
auto now = std::chrono::steady_clock::now();
auto sinceLast = std::chrono::duration_cast<std::chrono::microseconds>(now - m_last);
auto sinceStart = std::chrono::duration_cast<std::chrono::microseconds>(now - m_start);
m_last = now;
m_callback(m_id, m_start, sinceStart, sinceLast);
}