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1 | // This file is part of INSTINCT, the INS Toolkit for Integrated | ||
2 | // Navigation Concepts and Training by the Institute of Navigation of | ||
3 | // the University of Stuttgart, Germany. | ||
4 | // | ||
5 | // This Source Code Form is subject to the terms of the Mozilla Public | ||
6 | // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
7 | // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
8 | |||
9 | /// @file TsDeque.hpp | ||
10 | /// @brief Thread-safe deque | ||
11 | /// @author T. Topp (topp@ins.uni-stuttgart.de) | ||
12 | /// @date 2022-09-12 | ||
13 | |||
14 | #pragma once | ||
15 | |||
16 | #include <deque> | ||
17 | #include <mutex> | ||
18 | |||
19 | namespace NAV | ||
20 | { | ||
21 | |||
22 | /// @brief Thread-safe deque | ||
23 | /// @tparam T The type of the elements. | ||
24 | /// @tparam Alloc Allocator that is used to acquire/release memory and to construct/destroy the elements in that memory. | ||
25 | template<class T, class Alloc = std::allocator<T>> | ||
26 | class TsDeque | ||
27 | { | ||
28 | public: | ||
29 | // ####################################################################################################### | ||
30 | // Member functions | ||
31 | // ####################################################################################################### | ||
32 | |||
33 | /// @brief Default Constructor. Constructs an empty container with a default-constructed allocator. | ||
34 | 5856 | TsDeque() = default; | |
35 | |||
36 | /// Destructor | ||
37 | 8990 | ~TsDeque() = default; | |
38 | |||
39 | /// @brief Constructs an empty container with the given allocator alloc. | ||
40 | /// @param alloc Allocator to use for all memory allocations of this container | ||
41 | explicit TsDeque(const Alloc& alloc) | ||
42 | : _queue(alloc) {} | ||
43 | |||
44 | /// @brief Constructs the container with count copies of elements with value value. | ||
45 | /// @param count The size of the container | ||
46 | /// @param value The value to initialize elements of the container with | ||
47 | /// @param alloc Allocator to use for all memory allocations of this container | ||
48 | TsDeque(typename std::deque<T, Alloc>::size_type count, const T& value, const Alloc& alloc = Alloc()) | ||
49 | : _queue(count, value, alloc) {} | ||
50 | |||
51 | /// @brief Constructs the container with count default-inserted instances of T. No copies are made. | ||
52 | /// @param count The size of the container | ||
53 | /// @param alloc Allocator to use for all memory allocations of this container | ||
54 | explicit TsDeque(typename std::deque<T, Alloc>::size_type count, const Alloc& alloc = Alloc()) | ||
55 | : _queue(count, alloc) {} | ||
56 | |||
57 | /// @brief Constructs the container with the contents of the range [first, last). | ||
58 | /// @param first First element of the range to copy the elements from | ||
59 | /// @param last Last element the range to copy the elements from | ||
60 | /// @param alloc Allocator to use for all memory allocations of this container | ||
61 | template<class InputIt> | ||
62 | TsDeque(InputIt first, InputIt last, const Alloc& alloc = Alloc()) | ||
63 | : _queue(first, last, alloc) | ||
64 | {} | ||
65 | |||
66 | /// @brief Copy constructor. Constructs the container with the copy of the contents of other. | ||
67 | /// @param other Another container to be used as source to initialize the elements of the container with | ||
68 | 3135 | TsDeque(const TsDeque& other) | |
69 | 3135 | { | |
70 |
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3135 | std::scoped_lock lk(other._mutex); |
71 |
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3135 | _queue = std::deque<T, Alloc>(other._queue); // NOLINT(cppcoreguidelines-prefer-member-initializer) |
72 | 3135 | } | |
73 | /// @brief Constructs the container with the copy of the contents of other, using alloc as the allocator. | ||
74 | /// @param other Another container to be used as source to initialize the elements of the container with | ||
75 | /// @param alloc Allocator to use for all memory allocations of this container | ||
76 | TsDeque(const TsDeque& other, const Alloc& alloc) | ||
77 | { | ||
78 | std::scoped_lock lk(other._mutex); | ||
79 | _queue = std::deque<T, Alloc>(other._queue, alloc); // NOLINT(cppcoreguidelines-prefer-member-initializer) | ||
80 | } | ||
81 | /// @brief Move constructor. Constructs the container with the contents of other using move semantics. | ||
82 | /// Allocator is obtained by move-construction from the allocator belonging to other. | ||
83 | /// @param other Another container to be used as source to initialize the elements of the container with | ||
84 | TsDeque(TsDeque&& other) noexcept | ||
85 | { | ||
86 | std::scoped_lock lk(other._mutex); | ||
87 | _queue = std::deque<T, Alloc>(std::move(other._queue)); // NOLINT(cppcoreguidelines-prefer-member-initializer) | ||
88 | } | ||
89 | /// @brief Allocator-extended move constructor. Using alloc as the allocator for the new container, moving the contents from other; | ||
90 | /// if alloc != other.get_allocator(), this results in an element-wise move. | ||
91 | /// @param other Another container to be used as source to initialize the elements of the container with | ||
92 | /// @param alloc Allocator to use for all memory allocations of this container | ||
93 | TsDeque(TsDeque&& other, const Alloc& alloc) noexcept | ||
94 | { | ||
95 | std::scoped_lock lk(other._mutex); | ||
96 | _queue = std::deque<T, Alloc>(std::move(other._queue), alloc); // NOLINT(cppcoreguidelines-prefer-member-initializer) | ||
97 | } | ||
98 | /// @brief Constructs the container with the contents of the initializer list init. | ||
99 | /// @param init Initializer list to initialize the elements of the container with | ||
100 | /// @param alloc Allocator to use for all memory allocations of this container | ||
101 | TsDeque(std::initializer_list<T> init, const Alloc& alloc = Alloc()) | ||
102 | : _queue(init, alloc) {} | ||
103 | |||
104 | /// @brief Copy assignment operator | ||
105 | TsDeque& operator=(const TsDeque& other) | ||
106 | { | ||
107 | if (this != &other) | ||
108 | { | ||
109 | std::scoped_lock lk(_mutex); | ||
110 | std::scoped_lock lko(other._mutex); | ||
111 | _queue = other._queue; | ||
112 | } | ||
113 | return *this; | ||
114 | } | ||
115 | /// @brief Move assignment operator | ||
116 | ✗ | TsDeque& operator=(TsDeque&& other) noexcept | |
117 | { | ||
118 | ✗ | if (this != &other) | |
119 | { | ||
120 | ✗ | std::scoped_lock lk(_mutex); | |
121 | ✗ | std::scoped_lock lko(other._mutex); | |
122 | ✗ | _queue = std::move(other._queue); | |
123 | ✗ | } | |
124 | ✗ | return *this; | |
125 | } | ||
126 | /// @brief Replaces the contents with those identified by initializer list ilist. | ||
127 | /// @param ilist Initializer list to use as data source | ||
128 | TsDeque& operator=(std::initializer_list<T> ilist) | ||
129 | { | ||
130 | _queue = ilist; | ||
131 | } | ||
132 | |||
133 | /// @brief Replaces the contents with count copies of value value | ||
134 | /// | ||
135 | /// All iterators, pointers and references to the elements of the container are invalidated. The past-the-end iterator is also invalidated. | ||
136 | /// @param count The new size of the container | ||
137 | /// @param value The value to initialize elements of the container with | ||
138 | void assign(typename std::deque<T, Alloc>::size_type count, const T& value) | ||
139 | { | ||
140 | std::scoped_lock lk(_mutex); | ||
141 | _queue.assign(count, value); | ||
142 | } | ||
143 | |||
144 | /// @brief Replaces the contents with copies of those in the range [first, last). The behavior is undefined if either argument is an iterator into *this. | ||
145 | /// | ||
146 | /// All iterators, pointers and references to the elements of the container are invalidated. The past-the-end iterator is also invalidated. | ||
147 | /// @param[in] first The first element of the range to copy the elements from | ||
148 | /// @param[in] last The last element of the range to copy the elements from | ||
149 | template<class InputIt> | ||
150 | void assign(InputIt first, InputIt last) | ||
151 | { | ||
152 | std::scoped_lock lk(_mutex); | ||
153 | _queue.assign(first, last); | ||
154 | } | ||
155 | /// @brief Replaces the contents with the elements from the initializer list ilist. | ||
156 | /// | ||
157 | /// All iterators, pointers and references to the elements of the container are invalidated. The past-the-end iterator is also invalidated. | ||
158 | /// @param ilist Initializer list to copy the values from | ||
159 | void assign(std::initializer_list<T> ilist) | ||
160 | { | ||
161 | std::scoped_lock lk(_mutex); | ||
162 | _queue.assign(ilist); | ||
163 | } | ||
164 | |||
165 | /// @brief Returns the allocator associated with the container. | ||
166 | /// @return The associated allocator. | ||
167 | typename std::deque<T, Alloc>::allocator_type get_allocator() const noexcept | ||
168 | { | ||
169 | return _queue.get_allocator(); | ||
170 | } | ||
171 | |||
172 | // ####################################################################################################### | ||
173 | // Element access | ||
174 | // ####################################################################################################### | ||
175 | |||
176 | /// @brief Returns a reference to the element at specified location pos, with bounds checking. | ||
177 | /// If pos is not within the range of the container, an exception of type std::out_of_range is thrown. | ||
178 | /// @param[in] pos Position of the element to return | ||
179 | /// @return Reference to the requested element. | ||
180 | ✗ | auto& at(typename std::deque<T, Alloc>::size_type pos) { return _queue.at(pos); } | |
181 | /// @brief Returns a reference to the element at specified location pos, with bounds checking. | ||
182 | /// If pos is not within the range of the container, an exception of type std::out_of_range is thrown. | ||
183 | /// @param[in] pos Position of the element to return | ||
184 | /// @return Reference to the requested element. | ||
185 | const auto& at(typename std::deque<T, Alloc>::size_type pos) const { return _queue.at(pos); } | ||
186 | |||
187 | /// @brief Returns a reference to the element at specified location pos. No bounds checking is performed. | ||
188 | /// @param[in] pos Position of the element to return | ||
189 | /// @return Reference to the requested element. | ||
190 | auto& operator[](typename std::deque<T, Alloc>::size_type pos) { return _queue[pos]; } | ||
191 | /// @brief Returns a reference to the element at specified location pos. No bounds checking is performed. | ||
192 | /// @param[in] pos Position of the element to return | ||
193 | /// @return Reference to the requested element. | ||
194 | const auto& operator[](typename std::deque<T, Alloc>::size_type pos) const { return _queue[pos]; } | ||
195 | |||
196 | /// @brief Returns a reference to the first element in the container. | ||
197 | /// @return Reference to the first element | ||
198 | 1827825 | auto& front() { return _queue.front(); } | |
199 | /// @brief Returns a reference to the first element in the container. | ||
200 | /// @return Reference to the first element | ||
201 | 59376 | const auto& front() const { return _queue.front(); } | |
202 | |||
203 | /// @brief Returns a reference to the last element in the container. | ||
204 | /// @return Reference to the last element | ||
205 | auto& back() { return _queue.back(); } | ||
206 | /// @brief Returns a reference to the last element in the container. | ||
207 | /// @return Reference to the last element | ||
208 | const auto& back() const { return _queue.back(); } | ||
209 | |||
210 | // ####################################################################################################### | ||
211 | // Iterators | ||
212 | // ####################################################################################################### | ||
213 | |||
214 | /// @brief Returns an iterator to the first element of the deque. | ||
215 | /// If the deque is empty, the returned iterator will be equal to end(). | ||
216 | /// @return Iterator to the first element. | ||
217 | typename std::deque<T>::iterator begin() noexcept { return _queue.begin(); } | ||
218 | /// @brief Returns an iterator to the first element of the deque. | ||
219 | /// If the deque is empty, the returned iterator will be equal to end(). | ||
220 | /// @return Iterator to the first element. | ||
221 | typename std::deque<T>::const_iterator begin() const noexcept { return _queue.begin(); } | ||
222 | /// @brief Returns an iterator to the first element of the deque. | ||
223 | /// If the deque is empty, the returned iterator will be equal to end(). | ||
224 | /// @return Iterator to the first element. | ||
225 | typename std::deque<T>::const_iterator cbegin() const noexcept { return _queue.cbegin(); } | ||
226 | |||
227 | /// @brief Returns an iterator to the element following the last element of the deque. | ||
228 | /// This element acts as a placeholder; attempting to access it results in undefined behavior. | ||
229 | /// @return Iterator to the element following the last element. | ||
230 | typename std::deque<T>::iterator end() noexcept { return _queue.end(); } | ||
231 | /// @brief Returns an iterator to the element following the last element of the deque. | ||
232 | /// This element acts as a placeholder; attempting to access it results in undefined behavior. | ||
233 | /// @return Iterator to the element following the last element. | ||
234 | typename std::deque<T>::const_iterator end() const noexcept { return _queue.end(); } | ||
235 | /// @brief Returns an iterator to the element following the last element of the deque. | ||
236 | /// This element acts as a placeholder; attempting to access it results in undefined behavior. | ||
237 | /// @return Iterator to the element following the last element. | ||
238 | typename std::deque<T>::const_iterator cend() const noexcept { return _queue.cend(); } | ||
239 | |||
240 | /// @brief Returns a reverse iterator to the first element of the reversed deque. It corresponds to the last element of the non-reversed deque. | ||
241 | /// If the deque is empty, the returned iterator is equal to rend(). | ||
242 | /// @return Reverse iterator to the first element. | ||
243 | typename std::deque<T>::reverse_iterator rbegin() noexcept { return _queue.rbegin(); } | ||
244 | /// @brief Returns a reverse iterator to the first element of the reversed deque. It corresponds to the last element of the non-reversed deque. | ||
245 | /// If the deque is empty, the returned iterator is equal to rend(). | ||
246 | /// @return Reverse iterator to the first element. | ||
247 | typename std::deque<T>::const_reverse_iterator rbegin() const noexcept { return _queue.rbegin(); } | ||
248 | /// @brief Returns a reverse iterator to the first element of the reversed deque. It corresponds to the last element of the non-reversed deque. | ||
249 | /// If the deque is empty, the returned iterator is equal to rend(). | ||
250 | /// @return Reverse iterator to the first element. | ||
251 | typename std::deque<T>::const_reverse_iterator crbegin() const noexcept { return _queue.crbegin(); } | ||
252 | |||
253 | /// @brief Returns a reverse iterator to the element following the last element of the reversed deque. | ||
254 | /// It corresponds to the element preceding the first element of the non-reversed deque. | ||
255 | /// This element acts as a placeholder, attempting to access it results in undefined behavior. | ||
256 | /// @return Reverse iterator to the element following the last element. | ||
257 | typename std::deque<T>::reverse_iterator rend() noexcept { return _queue.rend(); } | ||
258 | /// @brief Returns a reverse iterator to the element following the last element of the reversed deque. | ||
259 | /// It corresponds to the element preceding the first element of the non-reversed deque. | ||
260 | /// This element acts as a placeholder, attempting to access it results in undefined behavior. | ||
261 | /// @return Reverse iterator to the element following the last element. | ||
262 | typename std::deque<T>::const_reverse_iterator rend() const noexcept { return _queue.rend(); } | ||
263 | /// @brief Returns a reverse iterator to the element following the last element of the reversed deque. | ||
264 | /// It corresponds to the element preceding the first element of the non-reversed deque. | ||
265 | /// This element acts as a placeholder, attempting to access it results in undefined behavior. | ||
266 | /// @return Reverse iterator to the element following the last element. | ||
267 | typename std::deque<T>::const_reverse_iterator crend() const noexcept { return _queue.crend(); } | ||
268 | |||
269 | // ####################################################################################################### | ||
270 | // Capacity | ||
271 | // ####################################################################################################### | ||
272 | |||
273 | /// @brief Checks if the container has no elements, i.e. whether 'begin() == end()'. | ||
274 | /// @return true if the container is empty, false otherwise | ||
275 | 4109341 | [[nodiscard]] bool empty() const noexcept | |
276 | { | ||
277 | 4109341 | std::scoped_lock lk(_mutex); | |
278 | 4112447 | return _queue.empty(); | |
279 | 4111740 | } | |
280 | |||
281 | /// @brief Returns the number of elements in the container, i.e. std::distance(begin(), end()). | ||
282 | /// @return The number of elements in the container. | ||
283 | 56800 | typename std::deque<T, Alloc>::size_type size() const noexcept | |
284 | { | ||
285 | 56800 | std::scoped_lock lk(_mutex); | |
286 | 56800 | return _queue.size(); | |
287 | 56800 | } | |
288 | |||
289 | /// @brief Returns the maximum number of elements the container is able to hold due to system or library implementation limitations, i.e. std::distance(begin(), end()) for the largest container. | ||
290 | /// @return Maximum number of elements. | ||
291 | typename std::deque<T, Alloc>::size_type max_size() const noexcept | ||
292 | { | ||
293 | std::scoped_lock lk(_mutex); | ||
294 | return _queue.max_size(); | ||
295 | } | ||
296 | |||
297 | /// @brief Requests the removal of unused capacity. | ||
298 | void shrink_to_fit() | ||
299 | { | ||
300 | std::scoped_lock lk(_mutex); | ||
301 | _queue.shrink_to_fit(); | ||
302 | } | ||
303 | |||
304 | // ####################################################################################################### | ||
305 | // Modifiers | ||
306 | // ####################################################################################################### | ||
307 | |||
308 | /// Erases all elements from the container. After this call, size() returns zero. | ||
309 | /// Invalidates any references, pointers, or iterators referring to contained elements. Any past-the-end iterators are also invalidated. | ||
310 | 831 | void clear() noexcept | |
311 | { | ||
312 | 831 | std::scoped_lock lk(_mutex); | |
313 | 831 | _queue.clear(); | |
314 | 829 | } | |
315 | |||
316 | /// @brief Insert value before pos in the container. | ||
317 | /// @param[in] pos Iterator before which the content will be inserted. pos may be the end() iterator | ||
318 | /// @param[in] value Element value to insert | ||
319 | /// @return Iterator pointing to the inserted value | ||
320 | typename std::deque<T>::iterator insert(typename std::deque<T>::const_iterator pos, const T& value) | ||
321 | { | ||
322 | std::scoped_lock lk(_mutex); | ||
323 | return _queue.insert(pos, value); | ||
324 | } | ||
325 | |||
326 | /// @brief Insert value before pos in the container. | ||
327 | /// @param[in] pos Iterator before which the content will be inserted. pos may be the end() iterator | ||
328 | /// @param[in] value Element value to insert | ||
329 | /// @return Iterator pointing to the inserted value | ||
330 | typename std::deque<T>::iterator insert(typename std::deque<T>::const_iterator pos, T&& value) | ||
331 | { | ||
332 | std::scoped_lock lk(_mutex); | ||
333 | return _queue.insert(pos, value); | ||
334 | } | ||
335 | |||
336 | /// @brief inserts count copies of the value before pos | ||
337 | /// @param[in] pos Iterator before which the content will be inserted. pos may be the end() iterator | ||
338 | /// @param[in] count Number of elements to insert | ||
339 | /// @param[in] value Element value to insert | ||
340 | /// @return Linear in count plus linear in the lesser of the distances between pos and either of the ends of the container. | ||
341 | typename std::deque<T>::iterator insert(typename std::deque<T>::const_iterator pos, typename std::deque<T, Alloc>::size_type count, const T& value) | ||
342 | { | ||
343 | std::scoped_lock lk(_mutex); | ||
344 | return _queue.insert(pos, count, value); | ||
345 | } | ||
346 | |||
347 | /// @brief inserts elements from range [first, last) before pos. | ||
348 | /// @tparam InputIt Input iterator type | ||
349 | /// @param[in] pos Iterator before which the content will be inserted. pos may be the end() iterator | ||
350 | /// @param[in] first The first element of the range of elements to insert, can't be iterators into container for which insert is called | ||
351 | /// @param[in] last The last element of the range of elements to insert, can't be iterators into container for which insert is called | ||
352 | /// @return Iterator pointing to the first element inserted, or pos if first==last. | ||
353 | template<class InputIt> | ||
354 | typename std::deque<T>::iterator insert(typename std::deque<T>::const_iterator pos, InputIt first, InputIt last) | ||
355 | { | ||
356 | std::scoped_lock lk(_mutex); | ||
357 | return _queue.insert(pos, first, last); | ||
358 | } | ||
359 | |||
360 | /// @brief Inserts elements from initializer list ilist before pos. | ||
361 | /// @param[in] pos Iterator before which the content will be inserted. pos may be the end() iterator | ||
362 | /// @param[in] ilist Initializer list to insert the values from | ||
363 | /// @return Iterator pointing to the first element inserted, or pos if ilist is empty. | ||
364 | typename std::deque<T>::iterator insert(typename std::deque<T>::const_iterator pos, std::initializer_list<T> ilist) | ||
365 | { | ||
366 | std::scoped_lock lk(_mutex); | ||
367 | return _queue.insert(pos, ilist); | ||
368 | } | ||
369 | |||
370 | /// @brief Inserts a new element into the container directly before pos. | ||
371 | /// @param[in] pos Iterator before which the new element will be constructed | ||
372 | /// @param[in] args Arguments to forward to the constructor of the element | ||
373 | /// @return Iterator pointing to the emplaced element. | ||
374 | template<class... Args> | ||
375 | typename std::deque<T>::iterator emplace(typename std::deque<T>::const_iterator pos, Args&&... args) | ||
376 | { | ||
377 | std::scoped_lock lk(_mutex); | ||
378 | return _queue.emplace(pos, std::forward<Args>(args)...); | ||
379 | } | ||
380 | |||
381 | /// @brief Removes the element at pos. | ||
382 | /// @param[in] pos Iterator to the element to remove | ||
383 | /// @return Iterator following the last removed element. | ||
384 | typename std::deque<T>::iterator erase(typename std::deque<T>::const_iterator pos) | ||
385 | { | ||
386 | std::scoped_lock lk(_mutex); | ||
387 | return _queue.erase(pos); | ||
388 | } | ||
389 | /// @brief Removes the elements in the range [first, last). | ||
390 | /// All iterators and references are invalidated, unless the erased elements are at the end or the beginning of the container, | ||
391 | /// in which case only the iterators and references to the erased elements are invalidated. | ||
392 | /// @param[in] first First element of the range of elements to remove | ||
393 | /// @param[in] last Last element of the range of elements to remove | ||
394 | /// @return Iterator following the last removed element. | ||
395 | typename std::deque<T>::iterator erase(typename std::deque<T>::const_iterator first, typename std::deque<T>::const_iterator last) | ||
396 | { | ||
397 | std::scoped_lock lk(_mutex); | ||
398 | return _queue.erase(first, last); | ||
399 | } | ||
400 | |||
401 | /// @brief Appends the given element value to the end of the container. The new element is initialized as a copy of value. | ||
402 | /// @param[in] value The value of the element to append | ||
403 | 467104 | void push_back(const T& value) | |
404 | { | ||
405 |
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467104 | std::scoped_lock lk(_mutex); |
406 |
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466986 | _queue.push_back(value); |
407 | 466871 | } | |
408 | /// @brief Appends the given element value to the end of the container. Value is moved into the new element. | ||
409 | /// @param[in] value The value of the element to append | ||
410 | ✗ | void push_back(T&& value) | |
411 | { | ||
412 | ✗ | std::scoped_lock lk(_mutex); | |
413 | ✗ | _queue.push_back(value); | |
414 | ✗ | } | |
415 | |||
416 | /// @brief Appends a new element to the end of the container. | ||
417 | /// @param[in] args Arguments to forward to the constructor of the element | ||
418 | /// @return A reference to the inserted element. | ||
419 | template<class... Args> | ||
420 | auto& emplace_back(Args&&... args) | ||
421 | { | ||
422 | std::scoped_lock lk(_mutex); | ||
423 | return _queue.emplace_back(std::forward<Args>(args)...); | ||
424 | } | ||
425 | |||
426 | /// @brief Removes the last element of the container. | ||
427 | void pop_back() | ||
428 | { | ||
429 | std::scoped_lock lk(_mutex); | ||
430 | _queue.pop_back(); | ||
431 | } | ||
432 | |||
433 | /// @brief Prepends the given element value to the beginning of the container. The new element is initialized as a copy of value. | ||
434 | /// All iterators, including the past-the-end iterator, are invalidated. No references are invalidated. | ||
435 | /// @param[in] value The value of the element to prepend | ||
436 | void push_front(const T& value) | ||
437 | { | ||
438 | std::scoped_lock lk(_mutex); | ||
439 | _queue.push_front(value); | ||
440 | } | ||
441 | /// @brief Prepends the given element value to the beginning of the container. Value is moved into the new element. | ||
442 | /// All iterators, including the past-the-end iterator, are invalidated. No references are invalidated. | ||
443 | /// @param[in] value The value of the element to prepend | ||
444 | void push_front(T&& value) | ||
445 | { | ||
446 | std::scoped_lock lk(_mutex); | ||
447 | _queue.push_front(value); | ||
448 | } | ||
449 | |||
450 | /// @brief Inserts a new element to the beginning of the container. | ||
451 | /// @param[in] args Arguments to forward to the constructor of the element | ||
452 | /// @return A reference to the inserted element. | ||
453 | template<class... Args> | ||
454 | auto& emplace_front(Args&&... args) | ||
455 | { | ||
456 | std::scoped_lock lk(_mutex); | ||
457 | return _queue.emplace_front(std::forward<Args>(args)...); | ||
458 | } | ||
459 | |||
460 | /// @brief Removes the first element of the container. If there are no elements in the container, the behavior is undefined. | ||
461 | 465716 | void pop_front() | |
462 | { | ||
463 |
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465716 | std::scoped_lock lk(_mutex); |
464 | 466264 | _queue.pop_front(); | |
465 | 466498 | } | |
466 | |||
467 | /// @brief Resizes the container to contain count elements. | ||
468 | /// @param[in] count New size of the container | ||
469 | void resize(typename std::deque<T, Alloc>::size_type count) | ||
470 | { | ||
471 | std::scoped_lock lk(_mutex); | ||
472 | _queue.resize(count); | ||
473 | } | ||
474 | /// @brief Resizes the container to contain count elements. | ||
475 | /// @param[in] count New size of the container | ||
476 | /// @param[in] value The value to initialize the new elements with | ||
477 | void resize(typename std::deque<T, Alloc>::size_type count, const T& value) | ||
478 | { | ||
479 | std::scoped_lock lk(_mutex); | ||
480 | _queue.resize(count, value); | ||
481 | } | ||
482 | |||
483 | /// @brief Exchanges the contents of the container with those of other. Does not invoke any move, copy, or swap operations on individual elements. | ||
484 | /// All iterators and references remain valid. The past-the-end iterator is invalidated. | ||
485 | /// @param[in, out] other Container to exchange the contents with | ||
486 | void swap(std::deque<T>& other) noexcept | ||
487 | { | ||
488 | std::scoped_lock lk(_mutex); | ||
489 | _queue.swap(other); | ||
490 | } | ||
491 | |||
492 | /// @brief Returns a copy of the first element in the container and removes it from the container. | ||
493 | /// @return Copy of the first element | ||
494 | 459482 | auto extract_front() | |
495 | { | ||
496 | 459482 | T front; | |
497 | { | ||
498 |
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459482 | std::scoped_lock lk(_mutex); |
499 | 460268 | front = _queue.front(); | |
500 | 459970 | } | |
501 |
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459784 | pop_front(); |
502 | 459446 | return front; | |
503 | ✗ | } | |
504 | |||
505 | private: | ||
506 | /// Queue with received data | ||
507 | std::deque<T, Alloc> _queue; | ||
508 | |||
509 | /// Mutex to interact with the queue object | ||
510 | mutable std::mutex _mutex; | ||
511 | }; | ||
512 | |||
513 | } // namespace NAV | ||
514 |