boost/interprocess/creation_tags.hpp

   1 //////////////////////////////////////////////////////////////////////////////
   2 //
   3 // (C) Copyright Ion Gaztanaga 2005-2008. Distributed under the Boost
   4 // Software License, Version 1.0. (See accompanying file
   5 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/interprocess for documentation.
   8 //
   9 //////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef BOOST_INTERPROCESS_CREATION_TAGS_HPP
  12 #define BOOST_INTERPROCESS_CREATION_TAGS_HPP
  13
  14 #include <boost/interprocess/detail/config_begin.hpp>
  15 #include <boost/interprocess/detail/workaround.hpp>
  16
  17 namespace boost {
  18 namespace interprocess {
  19
  20 //!Tag to indicate that the resource must
  21 //!be only created
  22 struct create_only_t {};
  23
  24 //!Tag to indicate that the resource must
  25 //!be only opened
  26 struct open_only_t {};
  27
  28 //!Tag to indicate that the resource must
  29 //!be only opened for reading
  30 struct open_read_only_t {};
  31
  32 //!Tag to indicate that the resource must
  33 //!be only opened for reading
  34 struct open_copy_on_write_t {};
  35
  36 //!Tag to indicate that the resource must
  37 //!be created. If already created, it must be opened.
  38 struct open_or_create_t {};
  39
  40 //!Value to indicate that the resource must
  41 //!be only created
  42 static const create_only_t    create_only    = create_only_t();
  43
  44 //!Value to indicate that the resource must
  45 //!be only opened
  46 static const open_only_t      open_only      = open_only_t();
  47
  48 //!Value to indicate that the resource must
  49 //!be only opened for reading
  50 static const open_read_only_t open_read_only = open_read_only_t();
  51
  52 //!Value to indicate that the resource must
  53 //!be created. If already created, it must be opened.
  54 static const open_or_create_t open_or_create = open_or_create_t();
  55
  56 //!Value to indicate that the resource must
  57 //!be only opened for reading
  58 static const open_copy_on_write_t open_copy_on_write = open_copy_on_write_t();
  59
  60 namespace detail {
  61
  62 enum create_enum_t
  63 {  DoCreate, DoOpen, DoOpenOrCreate   };
  64
  65 }  //namespace detail {
  66
  67 }  //namespace interprocess {
  68 }  //namespace boost {
  69
  70 #include <boost/interprocess/detail/config_end.hpp>
  71
  72 #endif   //#ifndef BOOST_INTERPROCESS_CREATION_TAGS_HPP
  73