qpms/oshacks.h

   1 /*! \file oshacks.h
   2  * \brief Some platform-dependent functions.
   3  */
   4 #ifndef _QPMS_OSHACKS_H
   5 #define _QPMS_OSHACKS_H
   6 #include <unistd.h>
   7
   8 #ifdef _SC_NPROCESSORS_ONLN
   9 static inline long get_ncpus(void) {
  10         return sysconf(_SC_NPROCESSORS_ONLN);
  11 }
  12 #elif (0)
  13 #include <sys/types.h>
  14 #include <sys/sysctl.h>
  15 static inline long get_ncpus(void) {
  16         int32_t ncpu;
  17         size_t len = sizeof(ncpu);
  18         sysctlbyname("hw.physicalcpu", &ncpu, &len, NULL, 0);
  19         return ncpu;
  20 }
  21 #else
  22 static inline long get_ncpus(void) { return -1; }
  23 #endif
  24
  25
  26 #endif // _QPMS_OSHACKS_H