ceph/src/boost/libs/smart_ptr/test/weak_from_raw_test4.cpp

   1 //
   2 //  weak_from_raw_test4.cpp
   3 //
   4 //  As weak_from_raw_test2.cpp, but uses weak_from_raw
   5 //  in the constructor
   6 //
   7 //  Copyright (c) 2014, 2015 Peter Dimov
   8 //
   9 //  Distributed under the Boost Software License, Version 1.0.
  10 //
  11 //  See accompanying file LICENSE_1_0.txt or copy at
  12 //  http://www.boost.org/LICENSE_1_0.txt
  13 //
  14
  15 #include <boost/smart_ptr/enable_shared_from_raw.hpp>
  16 #include <boost/weak_ptr.hpp>
  17 #include <boost/core/lightweight_test.hpp>
  18
  19 class X;
  20
  21 static boost::weak_ptr< X > r_;
  22
  23 void register_( boost::weak_ptr< X > const & r )
  24 {
  25     r_ = r;
  26 }
  27
  28 void check_( boost::weak_ptr< X > const & r )
  29 {
  30     BOOST_TEST( !( r < r_ ) && !( r_ < r ) );
  31 }
  32
  33 void unregister_( boost::weak_ptr< X > const & r )
  34 {
  35     BOOST_TEST( !( r < r_ ) && !( r_ < r ) );
  36     r_.reset();
  37 }
  38
  39 class X: public boost::enable_shared_from_raw
  40 {
  41 public:
  42
  43     X()
  44     {
  45         register_( boost::weak_from_raw( this ) );
  46     }
  47
  48     ~X()
  49     {
  50         unregister_( boost::weak_from_raw( this ) );
  51     }
  52
  53     void check()
  54     {
  55         check_( boost::weak_from_raw( this ) );
  56     }
  57 };
  58
  59 int main()
  60 {
  61     {
  62         boost::shared_ptr< X > px( new X );
  63         px->check();
  64     }
  65
  66     return boost::report_errors();
  67 }