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Commit | Line | Data |
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833e3df1 AE |
1 | #include "cache.h" |
2 | ||
435bdf8c | 3 | #if defined(hpux) || defined(__hpux) || defined(_hpux) |
833e3df1 AE |
4 | # include <sys/pstat.h> |
5 | #endif | |
6 | ||
7 | /* | |
8 | * By doing this in two steps we can at least get | |
9 | * the function to be somewhat coherent, even | |
10 | * with this disgusting nest of #ifdefs. | |
11 | */ | |
12 | #ifndef _SC_NPROCESSORS_ONLN | |
13 | # ifdef _SC_NPROC_ONLN | |
14 | # define _SC_NPROCESSORS_ONLN _SC_NPROC_ONLN | |
15 | # elif defined _SC_CRAY_NCPU | |
16 | # define _SC_NPROCESSORS_ONLN _SC_CRAY_NCPU | |
17 | # endif | |
18 | #endif | |
19 | ||
20 | int online_cpus(void) | |
21 | { | |
22 | #ifdef _SC_NPROCESSORS_ONLN | |
23 | long ncpus; | |
24 | #endif | |
25 | ||
26 | #ifdef _WIN32 | |
27 | SYSTEM_INFO info; | |
28 | GetSystemInfo(&info); | |
29 | ||
30 | if ((int)info.dwNumberOfProcessors > 0) | |
31 | return (int)info.dwNumberOfProcessors; | |
32 | #elif defined(hpux) || defined(__hpux) || defined(_hpux) | |
33 | struct pst_dynamic psd; | |
34 | ||
35 | if (!pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0)) | |
36 | return (int)psd.psd_proc_cnt; | |
37 | #endif | |
38 | ||
39 | #ifdef _SC_NPROCESSORS_ONLN | |
40 | if ((ncpus = (long)sysconf(_SC_NPROCESSORS_ONLN)) > 0) | |
41 | return (int)ncpus; | |
42 | #endif | |
43 | ||
44 | return 1; | |
45 | } |