ceph/src/boost/libs/scope_exit/test/world_this_seq.cpp

   1
   2 // Copyright (C) 2006-2009, 2012 Alexander Nasonov
   3 // Copyright (C) 2012 Lorenzo Caminiti
   4 // Distributed under the Boost Software License, Version 1.0
   5 // (see accompanying file LICENSE_1_0.txt or a copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7 // Home at http://www.boost.org/libs/scope_exit
   8
   9 #include <boost/scope_exit.hpp>
  10 #include <boost/typeof/typeof.hpp>
  11 #include <boost/typeof/std/vector.hpp>
  12 #include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
  13 #include <boost/detail/lightweight_test.hpp>
  14 #include <boost/config.hpp>
  15 #include <vector>
  16
  17 struct person {};
  18 BOOST_TYPEOF_REGISTER_TYPE(person)
  19
  20 struct world {
  21     void add_person(person const& a_person);
  22     size_t population(void) const { return persons_.size(); }
  23
  24 private:
  25     std::vector<person> persons_;
  26 };
  27 BOOST_TYPEOF_REGISTER_TYPE(world)
  28
  29 void world::add_person(person const& a_person) {
  30     bool commit = false;
  31
  32     persons_.push_back(a_person);
  33     BOOST_SCOPE_EXIT( (&commit) (this_) ) {
  34         if(!commit) this_->persons_.pop_back();
  35     } BOOST_SCOPE_EXIT_END
  36
  37     // ...
  38
  39     commit = true;
  40 }
  41
  42 int main(void) {
  43     world w;
  44     person p;
  45     w.add_person(p);
  46     BOOST_TEST(w.population() == 1);
  47     return boost::report_errors();
  48 }
  49