GCC Code Coverage Report

Directory: ./
File: Os/Generic/PriorityQueue.cpp
Date: 2026-09-03 21:13:48
Exec Total Coverage
Lines: 137 164 83.5%
Functions: 12 13 92.3%
Branches: 69 106 65.1%
Line Branch Exec Source
1 // ======================================================================
2 // \title Os/Generic/PriorityQueue.cpp
3 // \brief priority queue implementation for Os::Queue
4 // ======================================================================
5 #include "Os/Generic/PriorityQueue.hpp"
6 #include <algorithm>
7 #include <cstring>
8 #include "Fw/LanguageHelpers.hpp"
9 #include "Fw/Types/Assert.hpp"
10 #include "Fw/Types/MemAllocator.hpp"
11 #include "config/MemoryAllocatorTypeEnumAc.hpp"
12
13 namespace Os {
14 namespace Generic {
15
16 128673 FwSizeType PriorityQueueHandle ::find_index() {
17 128673 FW_ASSERT(this->m_depth > 0);
18
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 128673 FwSizeType index = this->m_indices[this->m_startIndex % this->m_depth];
19
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 128673 this->m_startIndex = (this->m_startIndex + 1) % this->m_depth;
20 128673 return index;
21 }
22
23 128357 void PriorityQueueHandle ::return_index(FwSizeType index) {
24 128357 FW_ASSERT(this->m_depth > 0);
25
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 128357 this->m_indices[this->m_stopIndex % this->m_depth] = index;
26
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 128357 this->m_stopIndex = (this->m_stopIndex + 1) % this->m_depth;
27 128357 }
28
29 128673 void PriorityQueueHandle ::store_data(FwSizeType index, const U8* data, FwSizeType size) {
30 128673 FW_ASSERT(size <= this->m_maxSize);
31 128673 FW_ASSERT(index < this->m_depth);
32
33 128673 FwSizeType offset = this->m_maxSize * index;
34
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 128673 (void)::memcpy(this->m_data + offset, data, static_cast<size_t>(size));
35 128673 this->m_sizes[index] = size;
36 128673 }
37
38 128357 void PriorityQueueHandle ::load_data(FwSizeType index, U8* destination, FwSizeType size) {
39 128357 FW_ASSERT(size <= this->m_maxSize);
40 128357 FW_ASSERT(index < this->m_depth);
41 128357 FwSizeType offset = this->m_maxSize * index;
42
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 128357 (void)::memcpy(destination, this->m_data + offset, static_cast<size_t>(size));
43 128357 }
44
45 2926 PriorityQueue::~PriorityQueue() {}
46
47 1451 QueueInterface::Status PriorityQueue::create(FwEnumStoreType id,
48 const Fw::ConstStringBase& name,
49 FwSizeType depth,
50 FwSizeType messageSize) {
51 1451 const FwEnumStoreType identifier = id;
52 1451 QueueInterface::Status status = Os::QueueInterface::Status::OP_OK;
53 // Ensure we are created exactly once
54 1451 FW_ASSERT(this->m_handle.m_indices == nullptr);
55 1451 FW_ASSERT(this->m_handle.m_sizes == nullptr);
56 1451 FW_ASSERT(this->m_handle.m_data == nullptr);
57
58 // Get the memory allocator configured for priority queues
59
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 2902 Fw::MemAllocator& allocator = Fw::MemAllocatorRegistry::getInstance().getAnAllocator(
60 1451 Fw::MemoryAllocation::MemoryAllocatorType::OS_GENERIC_PRIORITY_QUEUE);
61
62 // Allocate indices list
63 1451 void* allocation = nullptr;
64 1451 FwSizeType size = 0;
65 1451 FwSizeType* indices = nullptr;
66 1451 FwSizeType* sizes = nullptr;
67 1451 U8* data = nullptr;
68 1451 U8* heap_pointer = nullptr;
69
70 // Prevent integer overflow when computing allocation size (depth * sizeof(FwSizeType))
71 1451 FW_ASSERT(depth < std::numeric_limits<FwSizeType>::max() / sizeof(FwSizeType));
72
73 // Allocate indices list and construct it when valid
74 1451 size = depth * sizeof(FwSizeType);
75
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 1451 allocation = allocator.allocate(identifier, size, alignof(FwSizeType));
76
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 1451 if (allocation == nullptr) {
77 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
78
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 1451 } else if (size < (depth * sizeof(FwSizeType))) {
79 ✗ allocator.deallocate(identifier, allocation);
80 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
81 } else {
82
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 1451 indices = Fw::arrayPlacementNew<FwSizeType>(Fw::ByteArray(static_cast<U8*>(allocation), size), depth);
83 }
84
85 // Allocate sizes list and construct it when valid
86
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 1451 if (status == QueueInterface::Status::OP_OK) {
87 1451 size = depth * sizeof(FwSizeType);
88
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 1451 allocation = allocator.allocate(identifier, size, alignof(FwSizeType));
89
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 1451 if (allocation == nullptr) {
90 ✗ allocator.deallocate(identifier, indices);
91 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
92
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 1451 } else if (size < (depth * sizeof(FwSizeType))) {
93 ✗ allocator.deallocate(identifier, indices);
94 ✗ allocator.deallocate(identifier, allocation);
95 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
96 } else {
97
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 1451 sizes = Fw::arrayPlacementNew<FwSizeType>(Fw::ByteArray(static_cast<U8*>(allocation), size), depth);
98 }
99 }
100 // Allocate data
101
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 1451 if (status == QueueInterface::Status::OP_OK) {
102 // Prevent integer overflow when computing allocation size (depth * messageSize)
103 1451 FW_ASSERT((depth == 0) || (messageSize <= std::numeric_limits<FwSizeType>::max() / depth));
104 1451 size = depth * messageSize;
105
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 1451 allocation = allocator.allocate(identifier, size, alignof(U8));
106
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 1451 if (allocation == nullptr) {
107 ✗ allocator.deallocate(identifier, indices);
108 ✗ allocator.deallocate(identifier, sizes);
109 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
110
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 1451 } else if (size < (depth * messageSize)) {
111 ✗ allocator.deallocate(identifier, indices);
112 ✗ allocator.deallocate(identifier, sizes);
113 ✗ allocator.deallocate(identifier, allocation);
114 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
115 } else {
116 1451 data = static_cast<U8*>(allocation);
117 }
118 }
119 // Allocate data for max heap
120
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 1451 if (status == QueueInterface::Status::OP_OK) {
121 1451 size = Types::MaxHeap::ELEMENT_SIZE * depth;
122
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 1451 allocation = allocator.allocate(identifier, size, Types::MaxHeap::ALIGNMENT);
123
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 1451 if (allocation == nullptr) {
124 ✗ allocator.deallocate(identifier, indices);
125 ✗ allocator.deallocate(identifier, sizes);
126 ✗ allocator.deallocate(identifier, data);
127 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
128
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 1451 } else if (size < (Types::MaxHeap::ELEMENT_SIZE * depth)) {
129 ✗ allocator.deallocate(identifier, indices);
130 ✗ allocator.deallocate(identifier, sizes);
131 ✗ allocator.deallocate(identifier, data);
132 ✗ allocator.deallocate(identifier, allocation);
133 ✗ status = QueueInterface::Status::ALLOCATION_FAILED;
134 } else {
135 1451 heap_pointer = static_cast<U8*>(allocation);
136
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 1451 this->m_handle.m_heap.create(depth, Fw::ByteArray(static_cast<U8*>(allocation), size));
137 }
138 }
139 // Set up structures when all allocations succeeded
140
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 1451 if (status == QueueInterface::Status::OP_OK) {
141 // Assign initial indices and sizes
142
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 17392 for (FwSizeType i = 0; i < depth; i++) {
143 15941 indices[i] = i;
144 15941 sizes[i] = 0;
145 }
146 // Set local tracking variables
147 1451 this->m_handle.m_id = id;
148 1451 this->m_handle.m_maxSize = messageSize;
149 1451 this->m_handle.m_indices = indices;
150 1451 this->m_handle.m_data = data;
151 1451 this->m_handle.m_sizes = sizes;
152 1451 this->m_handle.m_heap_pointer = heap_pointer;
153 1451 this->m_handle.m_startIndex = 0;
154 1451 this->m_handle.m_stopIndex = 0;
155 1451 this->m_handle.m_depth = depth;
156 1451 this->m_handle.m_highMark = 0;
157 }
158 1451 return status;
159 }
160
161 1460 void PriorityQueue::teardown() {
162 1460 this->teardownInternal();
163 1460 }
164
165 1460 void PriorityQueue::teardownInternal() {
166
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 1460 if (this->m_handle.m_data != nullptr) {
167 // All backing arrays are allocated together in create()
168 1451 FW_ASSERT(this->m_handle.m_indices != nullptr);
169 1451 FW_ASSERT(this->m_handle.m_sizes != nullptr);
170 1451 FW_ASSERT(this->m_handle.m_heap_pointer != nullptr);
171 1451 const FwEnumStoreType identifier = this->m_handle.m_id;
172
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 2902 Fw::MemAllocator& allocator = Fw::MemAllocatorRegistry::getInstance().getAnAllocator(
173 1451 Fw::MemoryAllocation::MemoryAllocatorType::OS_GENERIC_PRIORITY_QUEUE);
174 1451 allocator.deallocate(identifier, this->m_handle.m_data);
175 1451 allocator.deallocate(identifier, this->m_handle.m_indices);
176 1451 allocator.deallocate(identifier, this->m_handle.m_sizes);
177 1451 this->m_handle.m_heap.teardown();
178 1451 allocator.deallocate(identifier, this->m_handle.m_heap_pointer);
179
180 // Set these pointers to nullptr
181 1451 this->m_handle.m_data = nullptr;
182 1451 this->m_handle.m_indices = nullptr;
183 1451 this->m_handle.m_sizes = nullptr;
184 }
185 1460 }
186
187 192070 QueueInterface::Status PriorityQueue::send(const U8* buffer,
188 FwSizeType size,
189 FwQueuePriorityType priority,
190 QueueInterface::BlockingType blockType) {
191 // Check for sizing problem before locking
192
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 192070 if (size > this->m_handle.m_maxSize) {
193 ✗ return QueueInterface::Status::SIZE_MISMATCH;
194 }
195 // Artificial block scope for scope lock ensuring an unlock in all cases and ensuring an unlock before notify
196 {
197
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 192070 Os::ScopeLock lock(this->m_handle.m_data_lock);
198
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 192070 if (this->m_handle.m_heap.isFull() and blockType == BlockingType::NONBLOCKING) {
199 63397 return QueueInterface::Status::FULL;
200 }
201 // Will loop and block until full is false
202 // @non-terminating@: condition-variable wait loop
203
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 128674 while (this->m_handle.m_heap.isFull()) {
204
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 1 this->m_handle.m_full.wait(this->m_handle.m_data_lock);
205 }
206
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 128673 FwSizeType index = this->m_handle.find_index();
207
208 // Space must exist, push must work
209
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 128673 const bool pushed = this->m_handle.m_heap.push(priority, index);
210 128673 FW_ASSERT(pushed);
211
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 128673 this->m_handle.store_data(index, buffer, size);
212 128673 this->m_handle.m_sizes[index] = size;
213
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 128673 this->m_handle.m_highMark = std::max(this->m_handle.m_highMark, this->getMessagesAvailable());
214 192070 }
215 128673 this->m_handle.m_empty.notify();
216 128673 return QueueInterface::Status::OP_OK;
217 }
218
219 134063 QueueInterface::Status PriorityQueue::receive(U8* destination,
220 FwSizeType capacity,
221 QueueInterface::BlockingType blockType,
222 FwSizeType& actualSize,
223 FwQueuePriorityType& priority) {
224 {
225
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 134063 Os::ScopeLock lock(this->m_handle.m_data_lock);
226
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 134063 if (this->m_handle.m_heap.isEmpty() and blockType == BlockingType::NONBLOCKING) {
227 5706 return QueueInterface::Status::EMPTY;
228 }
229 // Loop and lock while empty
230 // @non-terminating@: condition-variable wait loop
231
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 128358 while (this->m_handle.m_heap.isEmpty()) {
232
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 1 this->m_handle.m_empty.wait(this->m_handle.m_data_lock);
233 }
234
235 128357 FwSizeType index;
236 // Message must exist, so pop must pass and size must be valid
237
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 128357 const bool popped = this->m_handle.m_heap.pop(priority, index);
238 128357 FW_ASSERT(popped);
239 128357 actualSize = this->m_handle.m_sizes[index];
240 128357 FW_ASSERT(actualSize <= capacity);
241
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 128357 this->m_handle.load_data(index, destination, actualSize);
242
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 128357 this->m_handle.return_index(index);
243 134063 }
244 128357 this->m_handle.m_full.notify();
245 128357 return QueueInterface::Status::OP_OK;
246 }
247
248 389288 FwSizeType PriorityQueue::getMessagesAvailable() const {
249 389288 return this->m_handle.m_heap.getSize();
250 }
251
252 247593 FwSizeType PriorityQueue::getMessageHighWaterMark() const {
253 // Safe to cast away const in this context because scope lock will restore unlocked state on return
254
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 247593 Os::ScopeLock lock(const_cast<Mutex&>(this->m_handle.m_data_lock));
255 495186 return this->m_handle.m_highMark;
256 247593 }
257
258 ✗ QueueHandle* PriorityQueue::getHandle() {
259 ✗ return &this->m_handle;
260 }
261
262 } // namespace Generic
263 } // namespace Os
264