getself.c
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/*
TE4 - T-Engine 4
Copyright (C) 2009 - 2018 Nicolas Casalini
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 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 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/>.
Nicolas Casalini "DarkGod"
darkgod@te4.org
*/
#include "getself.h"
#if defined(SELFEXE_LINUX)
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
const char *get_self_executable(int argc, char **argv)
{
static char res[PATH_MAX];
// On linux systems /proc/self/exe is always a symlink to the real executable, so we jsut resolve it
realpath("/proc/self/exe", res);
return res;
}
int get_number_cpus()
{
return sysconf(_SC_NPROCESSORS_ONLN);
// return 1;
}
#elif defined(SELFEXE_BSD)
#include <limits.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/sysctl.h>
const char *get_self_executable(int argc, char **argv)
{
static char res[PATH_MAX];
int mib[4];
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = -1;
size_t cb = sizeof(res);
sysctl(mib,4,res,&cb,NULL,0);
return res;
}
#import <sys/sysctl.h>
int get_number_cpus()
{
return sysconf(_SC_NPROCESSORS_ONLN);
}
#elif defined(SELFEXE_WINDOWS)
#include <stdlib.h>
#include <windows.h>
const char *get_self_executable(int argc, char **argv)
{
static TCHAR szEXEPath[MAX_PATH];
GetModuleFileName(NULL,szEXEPath,MAX_PATH);
return szEXEPath;
}
int get_number_cpus()
{
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return sysinfo.dwNumberOfProcessors;
}
#elif defined(SELFEXE_MACOSX)
#include <mach-o/dyld.h>
#include <string.h>
#include <unistd.h>
const char *get_self_executable(int argc, char **argv)
{
size_t sz = 0;
char *buf;
char *sl;
_NSGetExecutablePath(NULL, &sz);
buf = (char*) malloc(++sz);
_NSGetExecutablePath(buf, &sz);
sl = strrchr(buf, '/');
*(sl + 1) = '\0';
return buf;
}
#import <sys/sysctl.h>
int get_number_cpus()
{
int count ;
size_t size=sizeof(count) ;
if (sysctlbyname("hw.ncpu",&count,&size,NULL,0)) return 1;
return count;
}
#else
const char *get_self_executable(int argc, char **argv)
{
return NULL;
}
int get_number_cpus()
{
return 1;
}
#endif