frk.py 文件源码

def nprocessors():
  try:
    try:
      # Mac OS
      libc=ctypes.cdll.LoadLibrary(ctypes.util.find_library('libc'))
      v=ctypes.c_int(0)
      size=ctypes.c_size_t(ctypes.sizeof(v))
      libc.sysctlbyname('hw.ncpu', ctypes.c_voidp(ctypes.addressof(v)), ctypes.addressof(size), None, 0)
      return v.value
    except:
      # Cygwin (Windows) and Linuxes
      # Could try sysconf(_SC_NPROCESSORS_ONLN) (LSB) next.  Instead, count processors in cpuinfo.
      s = open('/proc/cpuinfo', 'r').read()
      return s.replace(' ', '').replace('\t', '').count('processor:')
  except:
    return 1