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/*
* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
*
* 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 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 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/>.
*/
#ifndef _PROCESSPRIO_H
#define _PROCESSPRIO_H
#include "Configuration/Config.h"
#ifdef __linux__
#include <sched.h>
#include <sys/resource.h>
#define PROCESS_HIGH_PRIORITY -15 // [-20, 19], default is 0
#endif
void SetProcessPriority(const std::string& logChannel)
{
// Suppresses Mac OS X Warning since logChannel isn't used.
#if PLATFORM_APPLE
(void)logChannel;
#endif
#if defined(_WIN32) || defined(__linux__)
///- Handle affinity for multiple processors and process priority
uint32 affinity = sConfigMgr->GetIntDefault("UseProcessors", 0);
bool highPriority = sConfigMgr->GetBoolDefault("ProcessPriority", false);
#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)
TC_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))
TC_LOG_INFO(logChannel, "Using processors (bitmask, hex): %x", currentAffinity);
else
TC_LOG_ERROR(logChannel, "Can't set used processors (hex): %x", currentAffinity);
}
}
if (highPriority)
{
if (SetPriorityClass(hProcess, HIGH_PRIORITY_CLASS))
TC_LOG_INFO(logChannel, "Process priority class set to HIGH");
else
TC_LOG_ERROR(logChannel, "Can't set process priority class.");
}
#else // 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))
TC_LOG_ERROR(logChannel, "Can't set used processors (hex): %x, error: %s", affinity, strerror(errno));
else
{
CPU_ZERO(&mask);
sched_getaffinity(0, sizeof(mask), &mask);
TC_LOG_INFO(logChannel, "Using processors (bitmask, hex): %lx", *(__cpu_mask*)(&mask));
}
}
if (highPriority)
{
if (setpriority(PRIO_PROCESS, 0, PROCESS_HIGH_PRIORITY))
TC_LOG_ERROR(logChannel, "Can't set process priority class, error: %s", strerror(errno));
else
TC_LOG_INFO(logChannel, "Process priority class set to %i", getpriority(PRIO_PROCESS, 0));
}
#endif
#endif
}
#endif
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