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bb742ede | 1 | /* |
5e0de328 | 2 | * Copyright (C) 2009-2012 the libgit2 contributors |
bb742ede VM |
3 | * |
4 | * This file is part of libgit2, distributed under the GNU GPL v2 with | |
5 | * a Linking Exception. For full terms see the included COPYING file. | |
6 | */ | |
64a47c01 | 7 | #include "common.h" |
36f0f61f AE |
8 | #include "thread-utils.h" |
9 | ||
10 | #ifdef _WIN32 | |
87d9869f VM |
11 | # define WIN32_LEAN_AND_MEAN |
12 | # include <windows.h> | |
36f0f61f | 13 | #elif defined(hpux) || defined(__hpux) || defined(_hpux) |
87d9869f | 14 | # include <sys/pstat.h> |
36f0f61f AE |
15 | #endif |
16 | ||
17 | /* | |
18 | * By doing this in two steps we can at least get | |
19 | * the function to be somewhat coherent, even | |
20 | * with this disgusting nest of #ifdefs. | |
21 | */ | |
22 | #ifndef _SC_NPROCESSORS_ONLN | |
87d9869f VM |
23 | # ifdef _SC_NPROC_ONLN |
24 | # define _SC_NPROCESSORS_ONLN _SC_NPROC_ONLN | |
25 | # elif defined _SC_CRAY_NCPU | |
26 | # define _SC_NPROCESSORS_ONLN _SC_CRAY_NCPU | |
27 | # endif | |
36f0f61f AE |
28 | #endif |
29 | ||
30 | int git_online_cpus(void) | |
31 | { | |
32 | #ifdef _SC_NPROCESSORS_ONLN | |
33 | long ncpus; | |
34 | #endif | |
35 | ||
36 | #ifdef _WIN32 | |
37 | SYSTEM_INFO info; | |
38 | GetSystemInfo(&info); | |
39 | ||
40 | if ((int)info.dwNumberOfProcessors > 0) | |
41 | return (int)info.dwNumberOfProcessors; | |
42 | #elif defined(hpux) || defined(__hpux) || defined(_hpux) | |
43 | struct pst_dynamic psd; | |
44 | ||
45 | if (!pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0)) | |
46 | return (int)psd.psd_proc_cnt; | |
47 | #endif | |
48 | ||
49 | #ifdef _SC_NPROCESSORS_ONLN | |
50 | if ((ncpus = (long)sysconf(_SC_NPROCESSORS_ONLN)) > 0) | |
51 | return (int)ncpus; | |
52 | #endif | |
53 | ||
54 | return 1; | |
55 | } |