ceph/src/boost/libs/uuid/include/boost/uuid/nil_generator.hpp

   1 // Boost nil_generator.hpp header file  ----------------------------------------------//
   2
   3 // Copyright 2010 Andy Tompkins.
   4 // Distributed under the Boost Software License, Version 1.0. (See
   5 // accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7
   8 #ifndef BOOST_UUID_NIL_GENERATOR_HPP
   9 #define BOOST_UUID_NIL_GENERATOR_HPP
  10
  11 #include <boost/uuid/uuid.hpp>
  12
  13 namespace boost {
  14 namespace uuids {
  15
  16 // generate a nil uuid
  17 struct nil_generator {
  18     typedef uuid result_type;
  19
  20     uuid operator()() const {
  21         // initialize to all zeros
  22         uuid u = {{0}};
  23         return u;
  24     }
  25 };
  26
  27 inline uuid nil_uuid() {
  28     return nil_generator()();
  29 }
  30
  31 }} // namespace boost::uuids
  32
  33 #endif // BOOST_UUID_NIL_GENERATOR_HPP
  34