ceph/src/boost/libs/config/test/boost_has_part_alloc.ipp

   1 //  (C) Copyright John Maddock 2001.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org/libs/config for most recent version.
   7
   8 //  MACRO:         BOOST_HAS_PARTIAL_STD_ALLOCATOR
   9 //  TITLE:         limited std::allocator support
  10 //  DESCRIPTION:   The std lib has at least some kind of stanfard allocator
  11 //                 with allocate/deallocate members and probably not much more.
  12
  13 #include <memory>
  14
  15 #if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)))
  16 #  define BOOST_UNUSED_ATTRIBUTE __attribute__((unused))
  17 #else
  18 #  define BOOST_UNUSED_ATTRIBUTE
  19 #endif
  20
  21 namespace boost_has_partial_std_allocator{
  22
  23 //
  24 // test everything except rebind template members:
  25 //
  26
  27 template <class T>
  28 int test_allocator(const T& i)
  29 {
  30    typedef std::allocator<int> alloc1_t;
  31    typedef typename alloc1_t::size_type           size_type;
  32    typedef typename alloc1_t::difference_type     difference_type BOOST_UNUSED_ATTRIBUTE;
  33    typedef typename alloc1_t::pointer             pointer;
  34    typedef typename alloc1_t::const_pointer       const_pointer;
  35    typedef typename alloc1_t::reference           reference;
  36    typedef typename alloc1_t::const_reference     const_reference;
  37    typedef typename alloc1_t::value_type          value_type BOOST_UNUSED_ATTRIBUTE;
  38
  39    alloc1_t a1;
  40
  41    pointer p = a1.allocate(1);
  42    const_pointer cp = p;
  43    a1.construct(p,i);
  44    size_type s = a1.max_size();
  45    (void)s;
  46    reference r = *p;
  47    const_reference cr = *cp;
  48    if(p != a1.address(r)) return -1;
  49    if(cp != a1.address(cr)) return -1;
  50    a1.destroy(p);
  51    a1.deallocate(p,1);
  52
  53    return 0;
  54 }
  55
  56
  57 int test()
  58 {
  59    return test_allocator(0);
  60 }
  61
  62 }
  63
  64 #undef BOOST_UNUSED_ATTRIBUTE
  65