dune-common  2.7.0
shared_ptr.hh
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1 // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 // vi: set et ts=4 sw=2 sts=2:
3 
4 #ifndef DUNE_SHARED_PTR_HH
5 #define DUNE_SHARED_PTR_HH
6 
7 #include <memory>
8 
16 namespace Dune
17 {
18  // pull in default implementations
19  using std::shared_ptr;
20  using std::make_shared;
21 
50  template<class T>
51  struct null_deleter
52  {
53  void operator() (T*) const {}
54  };
55 
74  template<typename T>
75  inline shared_ptr<T> stackobject_to_shared_ptr(T & t)
76  {
77  return shared_ptr<T>(&t, null_deleter<T>());
78  }
79 
80 
98  template<class T>
99  auto wrap_or_move(T&& t)
100  {
101  return std::make_shared<std::decay_t<T>>(std::forward<T>(t));
102  }
103 
121  template<class T>
122  auto wrap_or_move(T& t)
123  {
124  return stackobject_to_shared_ptr(t);
125  }
126 
127 }
128 #endif
Dune::null_deleter
implements the Deleter concept of shared_ptr without deleting anything
Definition: shared_ptr.hh:51
Dune::null_deleter::operator()
void operator()(T *) const
Definition: shared_ptr.hh:53
typetraits.hh
Traits for type conversions and type information.
Dune::wrap_or_move
auto wrap_or_move(T &&t)
Capture R-value reference to shared_ptr.
Definition: shared_ptr.hh:99
Dune::stackobject_to_shared_ptr
shared_ptr< T > stackobject_to_shared_ptr(T &t)
Create a shared_ptr for a stack-allocated object.
Definition: shared_ptr.hh:75
Dune
Dune namespace.
Definition: alignedallocator.hh:13