ceph/src/boost/libs/smart_ptr/test/ip_hash_test2.cpp

   1 // Copyright 2011, 2020 Peter Dimov
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // https://www.boost.org/LICENSE_1_0.txt
   4
   5 #include <boost/intrusive_ptr.hpp>
   6 #include <boost/core/lightweight_test.hpp>
   7 #include <boost/config.hpp>
   8 #include <functional>
   9
  10 #if defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
  11
  12 int main() {}
  13
  14 #else
  15
  16 class base
  17 {
  18 private:
  19
  20     int use_count_;
  21
  22     base(base const &);
  23     base & operator=(base const &);
  24
  25 protected:
  26
  27     base(): use_count_(0)
  28     {
  29     }
  30
  31     virtual ~base()
  32     {
  33     }
  34
  35 public:
  36
  37     long use_count() const
  38     {
  39         return use_count_;
  40     }
  41
  42     inline friend void intrusive_ptr_add_ref(base * p)
  43     {
  44         ++p->use_count_;
  45     }
  46
  47     inline friend void intrusive_ptr_release(base * p)
  48     {
  49         if(--p->use_count_ == 0) delete p;
  50     }
  51 };
  52
  53 struct X: public base
  54 {
  55 };
  56
  57 int main()
  58 {
  59     boost::intrusive_ptr<X> p1, p2( new X );
  60
  61     BOOST_TEST_EQ( std::hash< boost::intrusive_ptr<X> >()( p1 ), std::hash< X* >()( p1.get() ) );
  62     BOOST_TEST_EQ( std::hash< boost::intrusive_ptr<X> >()( p2 ), std::hash< X* >()( p2.get() ) );
  63
  64     return boost::report_errors();
  65 }
  66
  67 #endif // #if defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)