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/*
* This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as published by the
* Free Software Foundation; either version 3 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 Affero General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ProcessPriority.h"
#include "Log.h"
#ifdef _WIN32 // Windows
#include <Windows.h>
#elif defined(__linux__)
#include "Log.h"
#include <sched.h>
#include <sys/resource.h>
#define PROCESS_HIGH_PRIORITY -15 // [-20, 19], default is 0
#endif
void SetProcessPriority(std::string const& logChannel, uint32 affinity, bool highPriority)
{
///- Handle affinity for multiple processors and process priority
#ifdef _WIN32 // Windows
HANDLE hProcess = GetCurrentProcess();
if (affinity > 0)
{
ULONG_PTR appAff;
ULONG_PTR sysAff;
if (GetProcessAffinityMask(hProcess, &appAff, &sysAff))
{
// remove non accessible processors
ULONG_PTR currentAffinity = affinity & appAff;
if (!currentAffinity)
{
LOG_ERROR(logChannel, "Processors marked in UseProcessors bitmask (hex) {:x} are not accessible. Accessible processors bitmask (hex): {:x}", affinity, appAff);
}
else if (SetProcessAffinityMask(hProcess, currentAffinity))
{
LOG_INFO(logChannel, "Using processors (bitmask, hex): {:x}", currentAffinity);
}
else
{
LOG_ERROR(logChannel, "Can't set used processors (hex): {:x}", currentAffinity);
}
}
}
if (highPriority)
{
if (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS))
{
LOG_INFO(logChannel, "Process priority class set to HIGH");
}
else
{
LOG_ERROR(logChannel, "Can't set process priority class.");
}
}
#elif defined(__linux__) // Linux
if (affinity > 0)
{
cpu_set_t mask;
CPU_ZERO(&mask);
for (unsigned int i = 0; i < sizeof(affinity) * 8; ++i)
if (affinity & (1 << i))
{
CPU_SET(i, &mask);
}
if (sched_setaffinity(0, sizeof(mask), &mask))
{
LOG_ERROR(logChannel, "Can't set used processors (hex): {:x}, error: {}", affinity, strerror(errno));
}
else
{
CPU_ZERO(&mask);
sched_getaffinity(0, sizeof(mask), &mask);
LOG_INFO(logChannel, "Using processors (bitmask, hex): {:x}", *(__cpu_mask*)(&mask));
}
}
if (highPriority)
{
if (setpriority(PRIO_PROCESS, 0, PROCESS_HIGH_PRIORITY))
{
LOG_ERROR(logChannel, "Can't set process priority class, error: {}", strerror(errno));
}
else
{
LOG_INFO(logChannel, "Process priority class set to {}", getpriority(PRIO_PROCESS, 0));
}
}
#else
// Suppresses unused argument warning for all other platforms
(void)logChannel;
(void)affinity;
(void)highPriority;
#endif
}
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