ceph/src/boost/boost/align/detail/aligned_alloc_macos.hpp

   1 /*
   2 Copyright 2014 Glen Joseph Fernandes
   3 (glenjofe@gmail.com)
   4
   5 Distributed under the Boost Software License, Version 1.0.
   6 (http://www.boost.org/LICENSE_1_0.txt)
   7 */
   8 #ifndef BOOST_ALIGN_DETAIL_ALIGNED_ALLOC_MACOS_HPP
   9 #define BOOST_ALIGN_DETAIL_ALIGNED_ALLOC_MACOS_HPP
  10
  11 #include <boost/align/detail/is_alignment.hpp>
  12 #include <boost/assert.hpp>
  13 #include <stdlib.h>
  14
  15 namespace boost {
  16 namespace alignment {
  17
  18 inline void*
  19 aligned_alloc(std::size_t alignment, std::size_t size) BOOST_NOEXCEPT
  20 {
  21     BOOST_ASSERT(detail::is_alignment(alignment));
  22     if (size == 0) {
  23         return 0;
  24     }
  25     if (alignment < sizeof(void*)) {
  26         alignment = sizeof(void*);
  27     }
  28     void* p;
  29     if (::posix_memalign(&p, alignment, size) != 0) {
  30         p = 0;
  31     }
  32     return p;
  33 }
  34
  35 inline void
  36 aligned_free(void* ptr) BOOST_NOEXCEPT
  37 {
  38     ::free(ptr);
  39 }
  40
  41 } /* alignment */
  42 } /* boost */
  43
  44 #endif