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/*
* Copyright (C) 2005-2018 Team Kodi
* This file is part of Kodi - https://kodi.tv
*
* SPDX-License-Identifier: GPL-2.0-or-later
* See LICENSES/README.md for more information.
*/
#include "PosixResourceCounter.h"
#include "utils/log.h"
#include <errno.h>
#include "PlatformDefs.h"
CPosixResourceCounter::CPosixResourceCounter()
{
Reset();
}
CPosixResourceCounter::~CPosixResourceCounter() = default;
double CPosixResourceCounter::GetCPUUsage()
{
struct timeval tmNow;
if (gettimeofday(&tmNow, NULL) == -1)
CLog::Log(LOGERROR, "error {} in gettimeofday", errno);
else
{
double dElapsed = ( ((double)tmNow.tv_sec + (double)tmNow.tv_usec / 1000000.0) -
((double)m_tmLastCheck.tv_sec + (double)m_tmLastCheck.tv_usec / 1000000.0) );
if (dElapsed >= 3.0)
{
struct rusage usage;
if (getrusage(RUSAGE_SELF, &usage) == -1)
CLog::Log(LOGERROR, "error {} in getrusage", errno);
else
{
double dUser = ( ((double)usage.ru_utime.tv_sec + (double)usage.ru_utime.tv_usec / 1000000.0) -
((double)m_usage.ru_utime.tv_sec + (double)m_usage.ru_utime.tv_usec / 1000000.0) );
double dSys = ( ((double)usage.ru_stime.tv_sec + (double)usage.ru_stime.tv_usec / 1000000.0) -
((double)m_usage.ru_stime.tv_sec + (double)m_usage.ru_stime.tv_usec / 1000000.0) );
m_tmLastCheck = tmNow;
m_usage = usage;
m_dLastUsage = ((dUser+dSys) / dElapsed) * 100.0;
return m_dLastUsage;
}
}
}
return m_dLastUsage;
}
void CPosixResourceCounter::Reset()
{
if (gettimeofday(&m_tmLastCheck, NULL) == -1)
CLog::Log(LOGERROR, "error {} in gettimeofday", errno);
if (getrusage(RUSAGE_SELF, &m_usage) == -1)
CLog::Log(LOGERROR, "error {} in getrusage", errno);
m_dLastUsage = 0.0;
}
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