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/* EINA - EFL data type library
* Copyright (C) 2007-2008 Jorge Luis Zapata Muga
*
* 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
#ifdef EFL_HAVE_THREADS
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#elif defined (__SUNPRO_C) || defined(__GNUC__)
#include <unistd.h>
#elif defined (__FreeBSD__) || defined (__OpenBSD__) || \
defined (__NetBSD__) || defined (__DragonFly__) || defined (__MacOSX__) || \
(defined (__MACH__) && defined (__APPLE__))
#include <unistd.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#elif defined (__linux__) || defined(__GLIBC__)
#define _GNU_SOURCE
#include <sched.h>
#endif
#ifdef EFL_HAVE_POSIX_THREADS
#include <pthread.h>
#endif
#define TH_MAX 8
#endif
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "eina_cpu.h"
/*============================================================================*
* Local *
*============================================================================*/
/* FIXME this ifdefs should be replaced */
/*============================================================================*
* Global *
*============================================================================*/
/*============================================================================*
* API *
*============================================================================*/
/* FIXME the features checks should be called when this function is called?
* or make it static by doing eina_cpu_init() and return a local var
*/
/**
*
* @return
*/
EAPI Eina_Cpu_Features eina_cpu_features_get(void)
{
Eina_Cpu_Features ecf = 0;
return ecf;
}
EAPI int eina_cpu_count(void)
{
#ifdef EFL_HAVE_THREADS
#if defined (_WIN32)
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return sysinfo.dwNumberOfProcessors;
#elif defined (__SUNPRO_C) || defined(__GNUC__)
/*
* _SC_NPROCESSORS_ONLN: number of processors that are online, that
is available when sysconf is called. The number
of cpu can change by admins.
* _SC_NPROCESSORS_CONF: maximum number of processors that are available
to the current OS instance. That number can be
change after a reboot.
* _SC_NPROCESSORS_MAX : maximum number of processors that are on the
motherboard.
*/
return sysconf(_SC_NPROCESSORS_ONLN);
#elif defined (__FreeBSD__) || defined (__OpenBSD__) || \
defined (__NetBSD__) || defined (__DragonFly__) || defined (__MacOSX__) || \
(defined (__MACH__) && defined (__APPLE__))
int mib[4];
int cpus;
size_t len = sizeof(cpus);
mib[0] = CTL_HW;
#ifdef HW_AVAILCPU
mib[1] = HW_AVAILCPU;
#else
mib[1] = HW_NCPU;
#endif
sysctl(mib, 2, &cpus, &len, NULL, 0);
if (cpus < 1)
cpus = 1;
return cpus;
#elif defined (__linux__) || defined(__GLIBC__)
cpu_set_t cpu;
int i;
static int cpus = 0;
if (cpus != 0)
return cpus;
CPU_ZERO(&cpu);
if (sched_getaffinity(0, sizeof(cpu), &cpu) != 0) {
fprintf(stderr, "[Eina] could not get cpu affinity: %s\n",
strerror(errno));
return 1;
}
for (i = 0; i < TH_MAX; i++) {
if (CPU_ISSET(i, &cpu))
cpus = i + 1;
else
break;
}
return cpus;
#else
#error "eina_cpu_count() error: Platform not supported"
#endif
#else
return 1;
#endif
}
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