Adds guards for hugepages

AlgoLab · Nov 11, 2019 · a62c145 · a62c145
1 parent c5c57c4
commit a62c145
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/bloomfilter.h b/bloomfilter.h
@@ -63,11 +63,13 @@ class BF {
  _mode(0),
  _bf(size, 0)
  {
+#ifdef MADV_HUGEPAGE
  char* const sptr = reinterpret_cast<char*>(_bf.data());
  const size_t soffset = SHARK_HUGEPAGESIZE - (reinterpret_cast<size_t>(sptr) % SHARK_HUGEPAGESIZE);
  char* const eptr = sptr + (((size + 63) >> 6) << 3);
  const size_t eoffset = (reinterpret_cast<size_t>(eptr) % SHARK_HUGEPAGESIZE);
  madvise(sptr + soffset, (eptr - sptr) - eoffset - soffset, MADV_HUGEPAGE);
+#endif
  }
 
  ~BF() {}