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