blob: 500ac758d62755c60b11169d59b39bf17e4b20c4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#ifdef __WIN32__
#include <windows.h>
#endif
#include "util.h"
#define SYSFS_CPU "/sys/devices/system/cpu/cpu"
#define MAXCPUS 1024
unsigned get_ncpus(void)
{
#ifdef __WIN32__
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return sysinfo.dwNumberOfProcessors;
#else
char path[cstrlen(SYSFS_CPU "1024") + 1];
unsigned n;
for (n = 0; n < MAXCPUS; n++) {
snprintf(path, sizeof(path), "%s%u", SYSFS_CPU, n);
if (access(path, F_OK) == -1)
break;
}
return n == 0 ? 1 : n;
#endif
}
|
