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

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