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

   1 //
   2 // ip_hash_test.cpp
   3 //
   4 // Copyright 2011 Peter Dimov
   5 //
   6 // Distributed under the Boost Software License, Version 1.0.
   7 // See accompanying file LICENSE_1_0.txt or copy at
   8 // http://www.boost.org/LICENSE_1_0.txt
   9 //
  10
  11 #include <boost/intrusive_ptr.hpp>
  12 #include <boost/functional/hash.hpp>
  13 #include <boost/detail/lightweight_test.hpp>
  14
  15 class base
  16 {
  17 private:
  18
  19     int use_count_;
  20
  21     base(base const &);
  22     base & operator=(base const &);
  23
  24 protected:
  25
  26     base(): use_count_(0)
  27     {
  28     }
  29
  30     virtual ~base()
  31     {
  32     }
  33
  34 public:
  35
  36     long use_count() const
  37     {
  38         return use_count_;
  39     }
  40
  41     inline friend void intrusive_ptr_add_ref(base * p)
  42     {
  43         ++p->use_count_;
  44     }
  45
  46     inline friend void intrusive_ptr_release(base * p)
  47     {
  48         if(--p->use_count_ == 0) delete p;
  49     }
  50 };
  51
  52 struct X: public base
  53 {
  54 };
  55
  56 int main()
  57 {
  58     boost::hash< boost::intrusive_ptr<X> > hasher;
  59
  60     boost::intrusive_ptr<X> p1, p2( p1 ), p3( new X ), p4( p3 ), p5( new X );
  61
  62     BOOST_TEST_EQ( p1, p2 );
  63     BOOST_TEST_EQ( hasher( p1 ), hasher( p2 ) );
  64
  65     BOOST_TEST_NE( p1, p3 );
  66     BOOST_TEST_NE( hasher( p1 ), hasher( p3 ) );
  67
  68     BOOST_TEST_EQ( p3, p4 );
  69     BOOST_TEST_EQ( hasher( p3 ), hasher( p4 ) );
  70
  71     BOOST_TEST_NE( p3, p5 );
  72     BOOST_TEST_NE( hasher( p3 ), hasher( p5 ) );
  73
  74     return boost::report_errors();
  75 }