ceph/src/common/page.cc

   1 #include <unistd.h>
   2
   3 namespace ceph {
   4
   5   // page size crap, see page.h
   6   int _get_bits_of(int v) {
   7     int n = 0;
   8     while (v) {
   9       n++;
  10       v = v >> 1;
  11     }
  12     return n;
  13   }
  14
  15   unsigned _page_size = sysconf(_SC_PAGESIZE);
  16   unsigned long _page_mask = ~(unsigned long)(_page_size - 1);
  17   unsigned _page_shift = _get_bits_of(_page_size - 1);
  18
  19 }