1 | /* |
---|---|
2 | Copyright 2017 Glen Joseph Fernandes |
3 | (glenjofe@gmail.com) |
4 | |
5 | Distributed under the Boost Software License, Version 1.0. |
6 | (http://www.boost.org/LICENSE_1_0.txt) |
7 | */ |
8 | #include <boost/config.hpp> |
9 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \ |
10 | !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) |
11 | #include <boost/core/lightweight_test.hpp> |
12 | #include <boost/smart_ptr/enable_shared_from_this.hpp> |
13 | #include <boost/smart_ptr/make_local_shared.hpp> |
14 | |
15 | template<class T = void> |
16 | struct creator { |
17 | typedef T value_type; |
18 | |
19 | template<class U> |
20 | struct rebind { |
21 | typedef creator<U> other; |
22 | }; |
23 | |
24 | creator() { } |
25 | |
26 | template<class U> |
27 | creator(const creator<U>&) { } |
28 | |
29 | T* allocate(std::size_t size) { |
30 | return static_cast<T*>(::operator new(sizeof(T) * size)); |
31 | } |
32 | |
33 | void deallocate(T* ptr, std::size_t) { |
34 | ::operator delete(ptr); |
35 | } |
36 | }; |
37 | |
38 | template<class T, class U> |
39 | inline bool |
40 | operator==(const creator<T>&, const creator<U>&) |
41 | { |
42 | return true; |
43 | } |
44 | |
45 | template<class T, class U> |
46 | inline bool |
47 | operator!=(const creator<T>&, const creator<U>&) |
48 | { |
49 | return false; |
50 | } |
51 | |
52 | class type |
53 | : public boost::enable_shared_from_this<type> { |
54 | public: |
55 | static unsigned instances; |
56 | |
57 | type() { |
58 | ++instances; |
59 | } |
60 | |
61 | ~type() { |
62 | --instances; |
63 | } |
64 | |
65 | private: |
66 | type(const type&); |
67 | type& operator=(const type&); |
68 | }; |
69 | |
70 | unsigned type::instances = 0; |
71 | |
72 | int main() |
73 | { |
74 | BOOST_TEST(type::instances == 0); |
75 | { |
76 | boost::local_shared_ptr<type[]> result = |
77 | boost::allocate_local_shared<type[]>(allocator: creator<type>(), count: 3); |
78 | try { |
79 | result[0].shared_from_this(); |
80 | BOOST_ERROR("shared_from_this did not throw"); |
81 | } catch (...) { |
82 | BOOST_TEST(type::instances == 3); |
83 | } |
84 | } |
85 | BOOST_TEST(type::instances == 0); |
86 | { |
87 | boost::local_shared_ptr<type[]> result = |
88 | boost::allocate_local_shared_noinit<type[]>(allocator: creator<>(), count: 3); |
89 | try { |
90 | result[0].shared_from_this(); |
91 | BOOST_ERROR("shared_from_this did not throw"); |
92 | } catch (...) { |
93 | BOOST_TEST(type::instances == 3); |
94 | } |
95 | } |
96 | return boost::report_errors(); |
97 | } |
98 | #else |
99 | int main() |
100 | { |
101 | return 0; |
102 | } |
103 | #endif |
104 |