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/* EINA - EFL data type library
* Copyright (C) 2010 ProFUSION embedded systems
*
* 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; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <pthread.h>
#ifdef __linux__
# include <sched.h>
# include <sys/time.h>
# include <sys/resource.h>
# include <errno.h>
#endif
#ifdef EFL_HAVE_WIN32_THREADS
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# undef WIN32_LEAN_AND_MEAN
#endif
#include "eina_sched.h"
#include "eina_log.h"
#define RTNICENESS 1
#define NICENESS 5
EAPI void
eina_sched_prio_drop(void)
{
struct sched_param param;
int pol, ret;
pthread_t pthread_id;
pthread_id = pthread_self();
ret = pthread_getschedparam(pthread_id, &pol, ¶m);
if (ret)
{
EINA_LOG_ERR("Unable to query sched parameters");
return;
}
if (EINA_UNLIKELY(pol == SCHED_RR || pol == SCHED_FIFO))
{
param.sched_priority -= RTNICENESS;
/* We don't change the policy */
if (param.sched_priority < 1)
{
EINA_LOG_INFO("RT prio < 1, setting to 1 instead");
param.sched_priority = 1;
}
pthread_setschedparam(pthread_id, pol, ¶m);
}
# ifdef __linux__
else
{
int prio;
errno = 0;
prio = getpriority(PRIO_PROCESS, 0);
if (errno == 0)
{
prio += NICENESS;
if (prio > 19)
{
EINA_LOG_INFO("Max niceness reached; keeping max (19)");
prio = 19;
}
setpriority(PRIO_PROCESS, 0, prio);
}
}
# endif
}
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