1 /*
2 Copyright (c) 2019-2021 Intel Corporation
3
4 Licensed under the Apache License, Version 2.0 (the "License");
5 you may not use this file except in compliance with the License.
6 You may obtain a copy of the License at
7
8 http://www.apache.org/licenses/LICENSE-2.0
9
10 Unless required by applicable law or agreed to in writing, software
11 distributed under the License is distributed on an "AS IS" BASIS,
12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 See the License for the specific language governing permissions and
14 limitations under the License.
15 */
16
17 #ifndef __TBB_concurrent_set_H
18 #define __TBB_concurrent_set_H
19
20 #include "detail/_namespace_injection.h"
21 #include "detail/_concurrent_skip_list.h"
22 #include "tbb_allocator.h"
23 #include <functional>
24 #include <utility>
25
26 namespace tbb {
27 namespace detail {
28 namespace d2 {
29
30 template<typename Key, typename KeyCompare, typename RandomGenerator, typename Allocator, bool AllowMultimapping>
31 struct set_traits {
32 static constexpr std::size_t max_level = RandomGenerator::max_level;
33 using random_level_generator_type = RandomGenerator;
34 using key_type = Key;
35 using value_type = key_type;
36 using compare_type = KeyCompare;
37 using value_compare = compare_type;
38 using reference = value_type&;
39 using const_reference = const value_type&;
40 using allocator_type = Allocator;
41
42 static constexpr bool allow_multimapping = AllowMultimapping;
43
get_keyset_traits44 static const key_type& get_key(const_reference val) {
45 return val;
46 }
47
value_compset_traits48 static value_compare value_comp(compare_type comp) { return comp; }
49 }; // struct set_traits
50
51 template <typename Key, typename Compare, typename Allocator>
52 class concurrent_multiset;
53
54 template <typename Key, typename Compare = std::less<Key>, typename Allocator = tbb::tbb_allocator<Key>>
55 class concurrent_set : public concurrent_skip_list<set_traits<Key, Compare, concurrent_geometric_level_generator<32>, Allocator, false>> {
56 using base_type = concurrent_skip_list<set_traits<Key, Compare, concurrent_geometric_level_generator<32>, Allocator, false>>;
57 public:
58 using key_type = Key;
59 using value_type = typename base_type::value_type;
60 using size_type = typename base_type::size_type;
61 using difference_type = typename base_type::difference_type;
62 using key_compare = Compare;
63 using value_compare = typename base_type::value_compare;
64 using allocator_type = Allocator;
65
66 using reference = typename base_type::reference;
67 using const_reference = typename base_type::const_reference;
68 using pointer = typename base_type::pointer;
69 using const_pointer = typename base_type::const_pointer;
70
71 using iterator = typename base_type::iterator;
72 using const_iterator = typename base_type::const_iterator;
73
74 using node_type = typename base_type::node_type;
75
76 // Include constructors of base_type
77 using base_type::base_type;
78
79 // Required for implicit deduction guides
80 concurrent_set() = default;
81 concurrent_set( const concurrent_set& ) = default;
concurrent_set(const concurrent_set & other,const allocator_type & alloc)82 concurrent_set( const concurrent_set& other, const allocator_type& alloc ) : base_type(other, alloc) {}
83 concurrent_set( concurrent_set&& ) = default;
concurrent_set(concurrent_set && other,const allocator_type & alloc)84 concurrent_set( concurrent_set&& other, const allocator_type& alloc ) : base_type(std::move(other), alloc) {}
85 // Required to respect the rule of 5
86 concurrent_set& operator=( const concurrent_set& ) = default;
87 concurrent_set& operator=( concurrent_set&& ) = default;
88
89 concurrent_set& operator=( std::initializer_list<value_type> il ) {
90 base_type::operator= (il);
91 return *this;
92 }
93
94 template<typename OtherCompare>
merge(concurrent_set<key_type,OtherCompare,Allocator> & source)95 void merge(concurrent_set<key_type, OtherCompare, Allocator>& source) {
96 this->internal_merge(source);
97 }
98
99 template<typename OtherCompare>
merge(concurrent_set<key_type,OtherCompare,Allocator> && source)100 void merge(concurrent_set<key_type, OtherCompare, Allocator>&& source) {
101 this->internal_merge(std::move(source));
102 }
103
104 template<typename OtherCompare>
merge(concurrent_multiset<key_type,OtherCompare,Allocator> & source)105 void merge(concurrent_multiset<key_type, OtherCompare, Allocator>& source) {
106 this->internal_merge(source);
107 }
108
109 template<typename OtherCompare>
merge(concurrent_multiset<key_type,OtherCompare,Allocator> && source)110 void merge(concurrent_multiset<key_type, OtherCompare, Allocator>&& source) {
111 this->internal_merge(std::move(source));
112 }
113 }; // class concurrent_set
114
115 #if __TBB_CPP17_DEDUCTION_GUIDES_PRESENT
116
117 template <typename It,
118 typename Comp = std::less<iterator_value_t<It>>,
119 typename Alloc = tbb::tbb_allocator<iterator_value_t<It>>,
120 typename = std::enable_if_t<is_input_iterator_v<It>>,
121 typename = std::enable_if_t<is_allocator_v<Alloc>>,
122 typename = std::enable_if_t<!is_allocator_v<Comp>>>
123 concurrent_set( It, It, Comp = Comp(), Alloc = Alloc() )
124 -> concurrent_set<iterator_value_t<It>, Comp, Alloc>;
125
126 template <typename Key,
127 typename Comp = std::less<Key>,
128 typename Alloc = tbb::tbb_allocator<Key>,
129 typename = std::enable_if_t<is_allocator_v<Alloc>>,
130 typename = std::enable_if_t<!is_allocator_v<Comp>>>
131 concurrent_set( std::initializer_list<Key>, Comp = Comp(), Alloc = Alloc() )
132 -> concurrent_set<Key, Comp, Alloc>;
133
134 template <typename It, typename Alloc,
135 typename = std::enable_if_t<is_input_iterator_v<It>>,
136 typename = std::enable_if_t<is_allocator_v<Alloc>>>
137 concurrent_set( It, It, Alloc )
138 -> concurrent_set<iterator_value_t<It>,
139 std::less<iterator_value_t<It>>, Alloc>;
140
141 template <typename Key, typename Alloc,
142 typename = std::enable_if_t<is_allocator_v<Alloc>>>
143 concurrent_set( std::initializer_list<Key>, Alloc )
144 -> concurrent_set<Key, std::less<Key>, Alloc>;
145
146 #endif // __TBB_CPP17_DEDUCTION_GUIDES_PRESENT
147
148 template <typename Key, typename Compare, typename Allocator>
swap(concurrent_set<Key,Compare,Allocator> & lhs,concurrent_set<Key,Compare,Allocator> & rhs)149 void swap( concurrent_set<Key, Compare, Allocator>& lhs,
150 concurrent_set<Key, Compare, Allocator>& rhs )
151 {
152 lhs.swap(rhs);
153 }
154
155 template <typename Key, typename Compare = std::less<Key>, typename Allocator = tbb::tbb_allocator<Key>>
156 class concurrent_multiset : public concurrent_skip_list<set_traits<Key, Compare, concurrent_geometric_level_generator<32>, Allocator, true>> {
157 using base_type = concurrent_skip_list<set_traits<Key, Compare, concurrent_geometric_level_generator<32>, Allocator, true>>;
158 public:
159 using key_type = Key;
160 using value_type = typename base_type::value_type;
161 using size_type = typename base_type::size_type;
162 using difference_type = typename base_type::difference_type;
163 using key_compare = Compare;
164 using value_compare = typename base_type::value_compare;
165 using allocator_type = Allocator;
166
167 using reference = typename base_type::reference;
168 using const_reference = typename base_type::const_reference;
169 using pointer = typename base_type::pointer;
170 using const_pointer = typename base_type::const_pointer;
171
172 using iterator = typename base_type::iterator;
173 using const_iterator = typename base_type::const_iterator;
174
175 using node_type = typename base_type::node_type;
176
177 // Include constructors of base_type;
178 using base_type::base_type;
179
180 // Required for implicit deduction guides
181 concurrent_multiset() = default;
182 concurrent_multiset( const concurrent_multiset& ) = default;
concurrent_multiset(const concurrent_multiset & other,const allocator_type & alloc)183 concurrent_multiset( const concurrent_multiset& other, const allocator_type& alloc ) : base_type(other, alloc) {}
184 concurrent_multiset( concurrent_multiset&& ) = default;
concurrent_multiset(concurrent_multiset && other,const allocator_type & alloc)185 concurrent_multiset( concurrent_multiset&& other, const allocator_type& alloc ) : base_type(std::move(other), alloc) {}
186 // Required to respect the rule of 5
187 concurrent_multiset& operator=( const concurrent_multiset& ) = default;
188 concurrent_multiset& operator=( concurrent_multiset&& ) = default;
189
190 concurrent_multiset& operator=( std::initializer_list<value_type> il ) {
191 base_type::operator= (il);
192 return *this;
193 }
194
195 template<typename OtherCompare>
merge(concurrent_set<key_type,OtherCompare,Allocator> & source)196 void merge(concurrent_set<key_type, OtherCompare, Allocator>& source) {
197 this->internal_merge(source);
198 }
199
200 template<typename OtherCompare>
merge(concurrent_set<key_type,OtherCompare,Allocator> && source)201 void merge(concurrent_set<key_type, OtherCompare, Allocator>&& source) {
202 this->internal_merge(std::move(source));
203 }
204
205 template<typename OtherCompare>
merge(concurrent_multiset<key_type,OtherCompare,Allocator> & source)206 void merge(concurrent_multiset<key_type, OtherCompare, Allocator>& source) {
207 this->internal_merge(source);
208 }
209
210 template<typename OtherCompare>
merge(concurrent_multiset<key_type,OtherCompare,Allocator> && source)211 void merge(concurrent_multiset<key_type, OtherCompare, Allocator>&& source) {
212 this->internal_merge(std::move(source));
213 }
214 }; // class concurrent_multiset
215
216 #if __TBB_CPP17_DEDUCTION_GUIDES_PRESENT
217
218 template <typename It,
219 typename Comp = std::less<iterator_value_t<It>>,
220 typename Alloc = tbb::tbb_allocator<iterator_value_t<It>>,
221 typename = std::enable_if_t<is_input_iterator_v<It>>,
222 typename = std::enable_if_t<is_allocator_v<Alloc>>,
223 typename = std::enable_if_t<!is_allocator_v<Comp>>>
224 concurrent_multiset( It, It, Comp = Comp(), Alloc = Alloc() )
225 -> concurrent_multiset<iterator_value_t<It>, Comp, Alloc>;
226
227 template <typename Key,
228 typename Comp = std::less<Key>,
229 typename Alloc = tbb::tbb_allocator<Key>,
230 typename = std::enable_if_t<is_allocator_v<Alloc>>,
231 typename = std::enable_if_t<!is_allocator_v<Comp>>>
232 concurrent_multiset( std::initializer_list<Key>, Comp = Comp(), Alloc = Alloc() )
233 -> concurrent_multiset<Key, Comp, Alloc>;
234
235 template <typename It, typename Alloc,
236 typename = std::enable_if_t<is_input_iterator_v<It>>,
237 typename = std::enable_if_t<is_allocator_v<Alloc>>>
238 concurrent_multiset( It, It, Alloc )
239 -> concurrent_multiset<iterator_value_t<It>, std::less<iterator_value_t<It>>, Alloc>;
240
241 template <typename Key, typename Alloc,
242 typename = std::enable_if_t<is_allocator_v<Alloc>>>
243 concurrent_multiset( std::initializer_list<Key>, Alloc )
244 -> concurrent_multiset<Key, std::less<Key>, Alloc>;
245
246 #endif // __TBB_CPP17_DEDUCTION_GUIDES_PRESENT
247
248 template <typename Key, typename Compare, typename Allocator>
swap(concurrent_multiset<Key,Compare,Allocator> & lhs,concurrent_multiset<Key,Compare,Allocator> & rhs)249 void swap( concurrent_multiset<Key, Compare, Allocator>& lhs,
250 concurrent_multiset<Key, Compare, Allocator>& rhs )
251 {
252 lhs.swap(rhs);
253 }
254
255 } // namespace d2
256 } // namespace detail
257
258 inline namespace v1 {
259
260 using detail::d2::concurrent_set;
261 using detail::d2::concurrent_multiset;
262 using detail::split;
263
264 } // inline namespace v1
265 } // namespace tbb
266
267 #endif // __TBB_concurrent_set_H
268