| #include "cache.h" |
| |
| #ifdef _WIN32 |
| # define WIN32_LEAN_AND_MEAN |
| # include <windows.h> |
| #elif defined(hpux) || defined(__hpux) || defined(_hpux) |
| # include <sys/pstat.h> |
| #endif |
| |
| /* |
| * By doing this in two steps we can at least get |
| * the function to be somewhat coherent, even |
| * with this disgusting nest of #ifdefs. |
| */ |
| #ifndef _SC_NPROCESSORS_ONLN |
| # ifdef _SC_NPROC_ONLN |
| # define _SC_NPROCESSORS_ONLN _SC_NPROC_ONLN |
| # elif defined _SC_CRAY_NCPU |
| # define _SC_NPROCESSORS_ONLN _SC_CRAY_NCPU |
| # endif |
| #endif |
| |
| int online_cpus(void) |
| { |
| #ifdef _SC_NPROCESSORS_ONLN |
| long ncpus; |
| #endif |
| |
| #ifdef _WIN32 |
| SYSTEM_INFO info; |
| GetSystemInfo(&info); |
| |
| if ((int)info.dwNumberOfProcessors > 0) |
| return (int)info.dwNumberOfProcessors; |
| #elif defined(hpux) || defined(__hpux) || defined(_hpux) |
| struct pst_dynamic psd; |
| |
| if (!pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0)) |
| return (int)psd.psd_proc_cnt; |
| #endif |
| |
| #ifdef _SC_NPROCESSORS_ONLN |
| if ((ncpus = (long)sysconf(_SC_NPROCESSORS_ONLN)) > 0) |
| return (int)ncpus; |
| #endif |
| |
| return 1; |
| } |
