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/**
* @file llprocinfo.cpp
* @brief Process, cpu and resource usage information APIs.
* @author monty@lindenlab.com
*
* $LicenseInfo:firstyear=2013&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2013, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "llprocinfo.h"
#if LL_WINDOWS
#define PSAPI_VERSION 1
#include "windows.h"
#include "psapi.h"
#elif LL_DARWIN
#include <sys/resource.h>
#include <mach/mach.h>
#else
#include <sys/time.h>
#include <sys/resource.h>
#endif // LL_WINDOWS/LL_DARWIN
// static
void LLProcInfo::getCPUUsage(time_type & user_time, time_type & system_time)
{
#if LL_WINDOWS
HANDLE self(GetCurrentProcess()); // Does not have to be closed
FILETIME ft_dummy, ft_system, ft_user;
GetProcessTimes(self, &ft_dummy, &ft_dummy, &ft_system, &ft_user);
ULARGE_INTEGER uli;
uli.u.LowPart = ft_system.dwLowDateTime;
uli.u.HighPart = ft_system.dwHighDateTime;
system_time = uli.QuadPart / U64L(10); // Convert to uS
uli.u.LowPart = ft_user.dwLowDateTime;
uli.u.HighPart = ft_user.dwHighDateTime;
user_time = uli.QuadPart / U64L(10);
#elif LL_DARWIN
struct rusage usage;
if (getrusage(RUSAGE_SELF, &usage))
{
user_time = system_time = time_type(0U);
return;
}
user_time = U64(usage.ru_utime.tv_sec) * U64L(1000000) + usage.ru_utime.tv_usec;
system_time = U64(usage.ru_stime.tv_sec) * U64L(1000000) + usage.ru_stime.tv_usec;
#else // Linux
struct rusage usage;
if (getrusage(RUSAGE_SELF, &usage))
{
user_time = system_time = time_type(0U);
return;
}
user_time = U64(usage.ru_utime.tv_sec) * U64L(1000000) + usage.ru_utime.tv_usec;
system_time = U64(usage.ru_stime.tv_sec) * U64L(1000000) + usage.ru_stime.tv_usec;
#endif // LL_WINDOWS/LL_DARWIN/Linux
}
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