Index/include / boost / corosio / detail / intrusive.hpp

include/boost/corosio/detail/intrusive.hpp

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intrusive.hpp
f(x) Functions (84)
Function Calls Lines Branches Blocks
<unknown function 43> :43 – – – – boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_datagram_socket>::intrusive_list() :47 1452x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_acceptor>::intrusive_list() :47 1452x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_socket>::intrusive_list() :47 1452x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_acceptor>::intrusive_list() :47 1452x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_socket>::intrusive_list() :47 1452x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_udp_socket>::intrusive_list() :47 1452x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file::raf_op>::intrusive_list() :47 152x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file>::intrusive_list() :47 2642x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_resolver>::intrusive_list() :47 2642x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_signal>::intrusive_list() :47 2642x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_stream_file>::intrusive_list() :47 2642x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_datagram_socket>::intrusive_list() :47 1190x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_acceptor>::intrusive_list() :47 1190x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_socket>::intrusive_list() :47 1190x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_acceptor>::intrusive_list() :47 1190x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_socket>::intrusive_list() :47 1190x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_udp_socket>::intrusive_list() :47 1190x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::waiter_node>::intrusive_list() :47 2852122x 0.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::waiter_node>::empty() const :61 38x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_datagram_socket>::push_back(boost::corosio::detail::kqueue_local_datagram_socket*) :72 92x 100.0% 40.4% 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_acceptor>::push_back(boost::corosio::detail::kqueue_local_stream_acceptor*) :72 27x 100.0% – 62.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_socket>::push_back(boost::corosio::detail::kqueue_local_stream_socket*) :72 85x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_acceptor>::push_back(boost::corosio::detail::kqueue_tcp_acceptor*) :72 1159x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_socket>::push_back(boost::corosio::detail::kqueue_tcp_socket*) :72 17085x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_udp_socket>::push_back(boost::corosio::detail::kqueue_udp_socket*) :72 104x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file::raf_op>::push_back(boost::corosio::detail::posix_random_access_file::raf_op*) :72 294x 100.0% 66.7% 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file>::push_back(boost::corosio::detail::posix_random_access_file*) :72 76x 100.0% – 62.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_resolver>::push_back(boost::corosio::detail::posix_resolver*) :72 42x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_signal>::push_back(boost::corosio::detail::posix_signal*) :72 108x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_stream_file>::push_back(boost::corosio::detail::posix_stream_file*) :72 76x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_datagram_socket>::push_back(boost::corosio::detail::select_local_datagram_socket*) :72 92x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_acceptor>::push_back(boost::corosio::detail::select_local_stream_acceptor*) :72 27x 100.0% – 62.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_socket>::push_back(boost::corosio::detail::select_local_stream_socket*) :72 85x 81.8% 66.7% 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_acceptor>::push_back(boost::corosio::detail::select_tcp_acceptor*) :72 141x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_socket>::push_back(boost::corosio::detail::select_tcp_socket*) :72 6736x 100.0% 66.7% 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_udp_socket>::push_back(boost::corosio::detail::select_udp_socket*) :72 104x 100.0% – 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::waiter_node>::push_back(boost::corosio::detail::waiter_node*) :72 15908x 100.0% 100.0% 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_datagram_socket>::pop_front() :103 726x 100.0% 12.2% 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_acceptor>::pop_front() :103 726x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_socket>::pop_front() :103 726x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_acceptor>::pop_front() :103 726x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_socket>::pop_front() :103 726x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_udp_socket>::pop_front() :103 726x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file>::pop_front() :103 1321x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_resolver>::pop_front() :103 1321x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_signal>::pop_front() :103 1321x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_stream_file>::pop_front() :103 1321x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_datagram_socket>::pop_front() :103 595x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_acceptor>::pop_front() :103 595x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_socket>::pop_front() :103 595x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_acceptor>::pop_front() :103 595x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_socket>::pop_front() :103 595x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_udp_socket>::pop_front() :103 595x 100.0% – 23.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::waiter_node>::pop_front() :103 1449444x 0.0% 0.0% 100.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_datagram_socket>::remove(boost::corosio::detail::kqueue_local_datagram_socket*) :121 92x 92.3% 46.2% 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_acceptor>::remove(boost::corosio::detail::kqueue_local_stream_acceptor*) :121 27x 100.0% – 57.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_local_stream_socket>::remove(boost::corosio::detail::kqueue_local_stream_socket*) :121 85x 100.0% – 89.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_acceptor>::remove(boost::corosio::detail::kqueue_tcp_acceptor*) :121 1159x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_tcp_socket>::remove(boost::corosio::detail::kqueue_tcp_socket*) :121 17085x 100.0% – 89.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::kqueue_udp_socket>::remove(boost::corosio::detail::kqueue_udp_socket*) :121 104x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file::raf_op>::remove(boost::corosio::detail::posix_random_access_file::raf_op*) :121 294x 84.6% 50.0% 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file>::remove(boost::corosio::detail::posix_random_access_file*) :121 76x 100.0% – 57.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_resolver>::remove(boost::corosio::detail::posix_resolver*) :121 42x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_signal>::remove(boost::corosio::detail::posix_signal*) :121 108x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_stream_file>::remove(boost::corosio::detail::posix_stream_file*) :121 76x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_datagram_socket>::remove(boost::corosio::detail::select_local_datagram_socket*) :121 92x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_acceptor>::remove(boost::corosio::detail::select_local_stream_acceptor*) :121 27x 100.0% – 57.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_local_stream_socket>::remove(boost::corosio::detail::select_local_stream_socket*) :121 85x 100.0% – 89.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_acceptor>::remove(boost::corosio::detail::select_tcp_acceptor*) :121 141x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_tcp_socket>::remove(boost::corosio::detail::select_tcp_socket*) :121 6736x 100.0% – 89.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::select_udp_socket>::remove(boost::corosio::detail::select_udp_socket*) :121 104x 100.0% – 73.0% boost::corosio::detail::intrusive_list<boost::corosio::detail::waiter_node>::remove(boost::corosio::detail::waiter_node*) :121 36x 84.6% 58.3% 76.0% void boost::corosio::detail::intrusive_list<boost::corosio::detail::posix_random_access_file::raf_op>::for_each<boost::corosio::detail::posix_random_access_file::cancel()::'lambda'(boost::corosio::detail::posix_random_access_file::raf_op*)>(boost::corosio::detail::posix_random_access_file::cancel()::'lambda'(boost::corosio::detail::posix_random_access_file::raf_op*)) :141 216x 50.0% 25.0% 42.0% <unknown function 179> :179 – – – – boost::corosio::detail::intrusive_queue<boost::corosio::detail::pool_work_item>::intrusive_queue() :183 2646x 100.0% – 100.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::scheduler_op>::intrusive_queue() :183 5894904x 100.0% – 100.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::pool_work_item>::empty() const :197 1586x 100.0% – 100.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::scheduler_op>::empty() const :197 11245947x 100.0% – 100.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::pool_work_item>::push(boost::corosio::detail::pool_work_item*) :202 374x 100.0% 50.0% 100.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::scheduler_op>::push(boost::corosio::detail::scheduler_op*) :202 3435598x 100.0% 100.0% 100.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::scheduler_op>::splice(boost::corosio::detail::intrusive_queue<boost::corosio::detail::scheduler_op>&) :212 1729045x 90.0% 75.0% 85.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::pool_work_item>::pop() :225 3031x 100.0% 100.0% 100.0% boost::corosio::detail::intrusive_queue<boost::corosio::detail::scheduler_op>::pop() :225 4818497x 100.0% 50.0% 100.0%
Line Branch TLA Hits Source Code
1 //
2 // Copyright (c) 2025 Vinnie Falco ([email protected])
3 //
4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 //
7 // Official repository: https://github.com/cppalliance/corosio
8 //
9
10 #ifndef BOOST_COROSIO_DETAIL_INTRUSIVE_HPP
11 #define BOOST_COROSIO_DETAIL_INTRUSIVE_HPP
12
13 namespace boost::corosio::detail {
14
15 /** An intrusive doubly linked list.
16
17 This container provides O(1) push and pop operations for
18 elements that derive from @ref node. Elements are not
19 copied or moved; they are linked directly into the list.
20
21 @tparam T The element type. Must derive from `intrusive_list<T>::node`.
22 */
23 template<class T>
24 class intrusive_list
25 {
26 public:
27 /** Base class for list elements.
28
29 Derive from this class to make a type usable with
30 @ref intrusive_list. The `next_` and `prev_` pointers
31 are private and accessible only to the list.
32 */
33 class node
34 {
35 friend class intrusive_list;
36
37 private:
38 T* next_;
39 T* prev_;
40 };
41
42 private:
43 1439347x T* head_ = nullptr;
44 1439347x T* tail_ = nullptr;
45
46 public:
47 4318041x intrusive_list() = default;
48
49 intrusive_list(intrusive_list&& other) noexcept
50 : head_(other.head_)
51 , tail_(other.tail_)
52 {
53 other.head_ = nullptr;
54 other.tail_ = nullptr;
55 }
56
57 intrusive_list(intrusive_list const&) = delete;
58 intrusive_list& operator=(intrusive_list const&) = delete;
59 intrusive_list& operator=(intrusive_list&&) = delete;
60
61 38x bool empty() const noexcept
62 {
63 38x return head_ == nullptr;
64 }
65
66 /// Peek at the head element without removing it.
67 T* front() const noexcept
68 {
69 return head_;
70 }
71
72 42241x void push_back(T* w) noexcept
73 {
74
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 42241x auto* n = static_cast<node*>(w);
75 42241x n->next_ = nullptr;
76 42241x n->prev_ = tail_;
77
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 42241x if (tail_)
78
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 23038x static_cast<node*>(tail_)->next_ = w;
79 else
80 19203x head_ = w;
81 42241x tail_ = w;
82 42241x }
83
84 void splice_back(intrusive_list& other) noexcept
85 {
86 if (other.empty())
87 return;
88 if (tail_)
89 {
90 static_cast<node*>(tail_)->next_ = other.head_;
91 static_cast<node*>(other.head_)->prev_ = tail_;
92 tail_ = other.tail_;
93 }
94 else
95 {
96 head_ = other.head_;
97 tail_ = other.tail_;
98 }
99 other.head_ = nullptr;
100 other.tail_ = nullptr;
101 }
102
103 1462654x T* pop_front() noexcept
104 {
105
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 1462654x if (!head_)
106 1446782x return nullptr;
107 15872x T* w = head_;
108
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 15872x head_ = static_cast<node*>(head_)->next_;
109
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 15872x if (head_)
110
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 47x static_cast<node*>(head_)->prev_ = nullptr;
111 else
112 15825x tail_ = nullptr;
113 // Defensive: clear stale linkage so remove() on a
114 // popped node cannot corrupt the list.
115
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 15872x auto* n = static_cast<node*>(w);
116 15872x n->next_ = nullptr;
117 15872x n->prev_ = nullptr;
118 15872x return w;
119 1462654x }
120
121 26369x void remove(T* w) noexcept
122 {
123
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 26369x auto* n = static_cast<node*>(w);
124 // Already detached — nothing to do.
125
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 26369x if (!n->next_ && !n->prev_ && head_ != w && tail_ != w)
126 ✗ return;
127
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 26369x if (n->prev_)
128
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 7104x static_cast<node*>(n->prev_)->next_ = n->next_;
129 else
130 19265x head_ = n->next_;
131
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 26369x if (n->next_)
132
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 16011x static_cast<node*>(n->next_)->prev_ = n->prev_;
133 else
134 10358x tail_ = n->prev_;
135 26369x n->next_ = nullptr;
136 26369x n->prev_ = nullptr;
137 26369x }
138
139 /// Invoke @p f for each element in the list.
140 template<class F>
141 216x void for_each(F f)
142 {
143
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 216x for (T* p = head_; p; p = static_cast<node*>(p)->next_)
144 ✗ f(p);
145 216x }
146 };
147
148 /** An intrusive singly linked FIFO queue.
149
150 This container provides O(1) push and pop operations for
151 elements that derive from @ref node. Elements are not
152 copied or moved; they are linked directly into the queue.
153
154 Unlike @ref intrusive_list, this uses only a single `next_`
155 pointer per node, saving memory at the cost of not supporting
156 O(1) removal of arbitrary elements.
157
158 @tparam T The element type. Must derive from `intrusive_queue<T>::node`.
159 */
160 template<class T>
161 class intrusive_queue
162 {
163 public:
164 /** Base class for queue elements.
165
166 Derive from this class to make a type usable with
167 @ref intrusive_queue. The `next_` pointer is private
168 and accessible only to the queue.
169 */
170 class node
171 {
172 friend class intrusive_queue;
173
174 private:
175 T* next_;
176 };
177
178 private:
179 2948775x T* head_ = nullptr;
180 2948775x T* tail_ = nullptr;
181
182 public:
183 8846325x intrusive_queue() = default;
184
185 intrusive_queue(intrusive_queue&& other) noexcept
186 : head_(other.head_)
187 , tail_(other.tail_)
188 {
189 other.head_ = nullptr;
190 other.tail_ = nullptr;
191 }
192
193 intrusive_queue(intrusive_queue const&) = delete;
194 intrusive_queue& operator=(intrusive_queue const&) = delete;
195 intrusive_queue& operator=(intrusive_queue&&) = delete;
196
197 11247533x bool empty() const noexcept
198 {
199 11247533x return head_ == nullptr;
200 }
201
202 3435972x void push(T* w) noexcept
203 {
204 3435972x w->next_ = nullptr;
205
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 3435972x if (tail_)
206 1560131x tail_->next_ = w;
207 else
208 1875841x head_ = w;
209 3435972x tail_ = w;
210 3435972x }
211
212 1729045x void splice(intrusive_queue& other) noexcept
213 {
214
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 1729045x if (other.empty())
215 ✗ return;
216
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 1729045x if (tail_)
217 381430x tail_->next_ = other.head_;
218 else
219 1347615x head_ = other.head_;
220 1729045x tail_ = other.tail_;
221 1729045x other.head_ = nullptr;
222 1729045x other.tail_ = nullptr;
223 1729045x }
224
225 4821528x T* pop() noexcept
226 {
227
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 4821528x if (!head_)
228 1385556x return nullptr;
229 3435972x T* w = head_;
230 3435972x head_ = head_->next_;
231
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 3435972x if (!head_)
232 1494411x tail_ = nullptr;
233 // Defensive: clear stale linkage on popped node.
234 3435972x w->next_ = nullptr;
235 3435972x return w;
236 4821528x }
237 };
238
239 } // namespace boost::corosio::detail
240
241 #endif
242