|
13 | 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
14 | 14 | * See the License for the specific language governing permissions and
|
15 | 15 | * limitations under the License.
|
16 |
| -*/ |
17 |
| -#include "dataBlock.h" |
18 |
| -#include <algorithm> |
19 |
| - |
20 |
| -namespace rocketmq { |
21 |
| -MemoryBlock::MemoryBlock() : size(0), data(NULL) {} |
22 |
| - |
23 |
| -MemoryBlock::MemoryBlock(const int initialSize, const bool initialiseToZero) |
24 |
| - : size(0), data(NULL) { |
25 |
| - if (initialSize > 0) { |
26 |
| - size = initialSize; |
27 |
| - data = static_cast<char*>(initialiseToZero |
28 |
| - ? std::calloc(initialSize, sizeof(char)) |
29 |
| - : std::malloc(initialSize * sizeof(char))); |
30 |
| - } |
31 |
| -} |
32 |
| - |
33 |
| -MemoryBlock::MemoryBlock(const void* const dataToInitialiseFrom, |
34 |
| - const size_t sizeInBytes) |
35 |
| - : size(sizeInBytes), data(NULL) { |
36 |
| - if (size > 0) { |
37 |
| - data = static_cast<char*>(std::malloc(size * sizeof(char))); |
38 |
| - |
39 |
| - if (dataToInitialiseFrom != NULL) memcpy(data, dataToInitialiseFrom, size); |
40 |
| - } |
41 |
| -} |
42 |
| - |
43 |
| -MemoryBlock::MemoryBlock(const MemoryBlock& other) |
44 |
| - : size(other.size), data(NULL) { |
45 |
| - if (size > 0) { |
46 |
| - data = static_cast<char*>(std::malloc(size * sizeof(char))); |
47 |
| - memcpy(data, other.data, size); |
48 |
| - } |
49 |
| -} |
50 |
| - |
51 |
| -MemoryBlock::~MemoryBlock() { std::free(data); } |
52 |
| - |
53 |
| -MemoryBlock& MemoryBlock::operator=(const MemoryBlock& other) { |
54 |
| - if (this != &other) { |
55 |
| - setSize(other.size, false); |
56 |
| - memcpy(data, other.data, size); |
57 |
| - } |
58 |
| - |
59 |
| - return *this; |
60 |
| -} |
61 |
| - |
62 |
| -//============================================================================== |
63 |
| -bool MemoryBlock::operator==(const MemoryBlock& other) const { |
64 |
| - return matches(other.data, other.size); |
65 |
| -} |
66 |
| - |
67 |
| -bool MemoryBlock::operator!=(const MemoryBlock& other) const { |
68 |
| - return !operator==(other); |
69 |
| -} |
70 |
| - |
71 |
| -bool MemoryBlock::matches(const void* dataToCompare, int dataSize) const { |
72 |
| - return size == dataSize && memcmp(data, dataToCompare, size) == 0; |
73 |
| -} |
74 |
| - |
75 |
| -//============================================================================== |
76 |
| -// this will resize the block to this size |
77 |
| -void MemoryBlock::setSize(const int newSize, const bool initialiseToZero) { |
78 |
| - if (size != newSize) { |
79 |
| - if (newSize <= 0) { |
80 |
| - reset(); |
81 |
| - } else { |
82 |
| - if (data != NULL) { |
83 |
| - data = static_cast<char*>( |
84 |
| - data == NULL ? std::malloc(newSize * sizeof(char)) |
85 |
| - : std::realloc(data, newSize * sizeof(char))); |
86 |
| - |
87 |
| - if (initialiseToZero && (newSize > size)) |
88 |
| - memset(data + size, 0, newSize - size); |
89 |
| - } else { |
90 |
| - std::free(data); |
91 |
| - data = static_cast<char*>(initialiseToZero |
92 |
| - ? std::calloc(newSize, sizeof(char)) |
93 |
| - : std::malloc(newSize * sizeof(char))); |
94 |
| - } |
95 |
| - |
96 |
| - size = newSize; |
97 |
| - } |
98 |
| - } |
99 |
| -} |
100 |
| - |
101 |
| -void MemoryBlock::reset() { |
102 |
| - std::free(data); |
103 |
| - data = NULL; |
104 |
| - size = 0; |
105 |
| -} |
106 |
| - |
107 |
| -void MemoryBlock::ensureSize(const int minimumSize, |
108 |
| - const bool initialiseToZero) { |
109 |
| - if (size < minimumSize) setSize(minimumSize, initialiseToZero); |
110 |
| -} |
111 |
| - |
112 |
| -//============================================================================== |
113 |
| -void MemoryBlock::fillWith(const int value) { memset(data, (int)value, size); } |
114 |
| - |
115 |
| -void MemoryBlock::append(const void* const srcData, const int numBytes) { |
116 |
| - if (numBytes > 0) { |
117 |
| - const int oldSize = size; |
118 |
| - setSize(size + numBytes); |
119 |
| - memcpy(data + oldSize, srcData, numBytes); |
120 |
| - } |
121 |
| -} |
122 |
| - |
123 |
| -void MemoryBlock::replaceWith(const void* const srcData, const int numBytes) { |
124 |
| - if (numBytes > 0) { |
125 |
| - setSize(numBytes); |
126 |
| - memcpy(data, srcData, numBytes); |
127 |
| - } |
128 |
| -} |
129 |
| - |
130 |
| -void MemoryBlock::insert(const void* const srcData, const int numBytes, |
131 |
| - int insertPosition) { |
132 |
| - if (numBytes > 0) { |
133 |
| - insertPosition = std::min(insertPosition, size); |
134 |
| - const int trailingDataSize = size - insertPosition; |
135 |
| - setSize(size + numBytes, false); |
136 |
| - |
137 |
| - if (trailingDataSize > 0) |
138 |
| - memmove(data + insertPosition + numBytes, data + insertPosition, |
139 |
| - trailingDataSize); |
140 |
| - |
141 |
| - memcpy(data + insertPosition, srcData, numBytes); |
142 |
| - } |
143 |
| -} |
144 |
| - |
145 |
| -void MemoryBlock::removeSection(const int startByte, |
146 |
| - const int numBytesToRemove) { |
147 |
| - if (startByte + numBytesToRemove >= size) { |
148 |
| - setSize(startByte); |
149 |
| - } else if (numBytesToRemove > 0) { |
150 |
| - memmove(data + startByte, data + startByte + numBytesToRemove, |
151 |
| - size - (startByte + numBytesToRemove)); |
152 |
| - |
153 |
| - setSize(size - numBytesToRemove); |
154 |
| - } |
155 |
| -} |
156 |
| - |
157 |
| -void MemoryBlock::copyFrom(const void* const src, int offset, int num) { |
158 |
| - const char* d = static_cast<const char*>(src); |
159 |
| - |
160 |
| - if (offset < 0) { |
161 |
| - d -= offset; |
162 |
| - num += (size_t)-offset; |
163 |
| - offset = 0; |
164 |
| - } |
165 |
| - |
166 |
| - if ((size_t)offset + num > (unsigned int)size) num = size - (size_t)offset; |
167 |
| - |
168 |
| - if (num > 0) memcpy(data + offset, d, num); |
169 |
| -} |
170 |
| - |
171 |
| -void MemoryBlock::copyTo(void* const dst, int offset, int num) const { |
172 |
| - char* d = static_cast<char*>(dst); |
173 |
| - |
174 |
| - if (offset < 0) { |
175 |
| - memset(d, 0, (size_t)-offset); |
176 |
| - d -= offset; |
177 |
| - num -= (size_t)-offset; |
178 |
| - offset = 0; |
179 |
| - } |
180 |
| - |
181 |
| - if ((size_t)offset + num > (unsigned int)size) { |
182 |
| - const int newNum = (size_t)size - (size_t)offset; |
183 |
| - memset(d + newNum, 0, num - newNum); |
184 |
| - num = newNum; |
185 |
| - } |
186 |
| - |
187 |
| - if (num > 0) memcpy(d, data + offset, num); |
188 |
| -} |
189 |
| -} |
| 16 | +*/ |
| 17 | +#include "dataBlock.h" |
| 18 | +#include <algorithm> |
| 19 | + |
| 20 | +namespace rocketmq { |
| 21 | + |
| 22 | +MemoryBlock::MemoryBlock() : size(0), data(NULL) {} |
| 23 | + |
| 24 | +MemoryBlock::MemoryBlock(const int initialSize, const bool initialiseToZero) |
| 25 | + : size(0), data(NULL) { |
| 26 | + if (initialSize > 0) { |
| 27 | + size = initialSize; |
| 28 | + data = static_cast<char *>(initialiseToZero |
| 29 | + ? std::calloc(initialSize, sizeof(char)) |
| 30 | + : std::malloc(initialSize * sizeof(char))); |
| 31 | + } |
| 32 | +} |
| 33 | + |
| 34 | +MemoryBlock::MemoryBlock(const void *const dataToInitialiseFrom, const size_t sizeInBytes) |
| 35 | + : size(sizeInBytes), data(NULL) { |
| 36 | + if (size > 0) { |
| 37 | + data = static_cast<char *>(std::malloc(size * sizeof(char))); |
| 38 | + |
| 39 | + if (dataToInitialiseFrom != NULL) memcpy(data, dataToInitialiseFrom, size); |
| 40 | + } |
| 41 | +} |
| 42 | + |
| 43 | +MemoryBlock::MemoryBlock(const MemoryBlock &other) : size(other.size), data(NULL) { |
| 44 | + if (size > 0) { |
| 45 | + data = static_cast<char *>(std::malloc(size * sizeof(char))); |
| 46 | + memcpy(data, other.data, size); |
| 47 | + } |
| 48 | +} |
| 49 | + |
| 50 | +MemoryBlock::MemoryBlock(MemoryBlock &&other) : size(other.size), data(other.data) { |
| 51 | + other.size = 0; |
| 52 | + other.data = NULL; |
| 53 | +} |
| 54 | + |
| 55 | +MemoryBlock::~MemoryBlock() { std::free(data); } |
| 56 | + |
| 57 | +MemoryBlock &MemoryBlock::operator=(const MemoryBlock &other) { |
| 58 | + if (this != &other) { |
| 59 | + setSize(other.size, false); |
| 60 | + memcpy(data, other.data, size); |
| 61 | + } |
| 62 | + |
| 63 | + return *this; |
| 64 | +} |
| 65 | + |
| 66 | +MemoryBlock &MemoryBlock::operator=(MemoryBlock &&other) { |
| 67 | + if (this != &other) { |
| 68 | + std::free(data); |
| 69 | + |
| 70 | + size = other.size; |
| 71 | + data = other.data; |
| 72 | + |
| 73 | + other.size = 0; |
| 74 | + other.data = NULL; |
| 75 | + } |
| 76 | + |
| 77 | + return *this; |
| 78 | +} |
| 79 | + |
| 80 | +//============================================================================== |
| 81 | +bool MemoryBlock::operator==(const MemoryBlock &other) const { |
| 82 | + return matches(other.data, other.size); |
| 83 | +} |
| 84 | + |
| 85 | +bool MemoryBlock::operator!=(const MemoryBlock &other) const { |
| 86 | + return !operator==(other); |
| 87 | +} |
| 88 | + |
| 89 | +bool MemoryBlock::matches(const void *dataToCompare, int dataSize) const { |
| 90 | + return size == dataSize && memcmp(data, dataToCompare, size) == 0; |
| 91 | +} |
| 92 | + |
| 93 | +//============================================================================== |
| 94 | +// this will resize the block to this size |
| 95 | +void MemoryBlock::setSize(const int newSize, const bool initialiseToZero) { |
| 96 | + if (size != newSize) { |
| 97 | + if (newSize <= 0) { |
| 98 | + reset(); |
| 99 | + } else { |
| 100 | + if (data != NULL) { |
| 101 | + data = static_cast<char *>( |
| 102 | + data == NULL ? std::malloc(newSize * sizeof(char)) |
| 103 | + : std::realloc(data, newSize * sizeof(char))); |
| 104 | + |
| 105 | + if (initialiseToZero && (newSize > size)) |
| 106 | + memset(data + size, 0, newSize - size); |
| 107 | + } else { |
| 108 | + std::free(data); |
| 109 | + data = static_cast<char *>(initialiseToZero |
| 110 | + ? std::calloc(newSize, sizeof(char)) |
| 111 | + : std::malloc(newSize * sizeof(char))); |
| 112 | + } |
| 113 | + |
| 114 | + size = newSize; |
| 115 | + } |
| 116 | + } |
| 117 | +} |
| 118 | + |
| 119 | +void MemoryBlock::reset() { |
| 120 | + std::free(data); |
| 121 | + data = NULL; |
| 122 | + size = 0; |
| 123 | +} |
| 124 | + |
| 125 | +void MemoryBlock::ensureSize(const int minimumSize, const bool initialiseToZero) { |
| 126 | + if (size < minimumSize) setSize(minimumSize, initialiseToZero); |
| 127 | +} |
| 128 | + |
| 129 | +//============================================================================== |
| 130 | +void MemoryBlock::fillWith(const int value) { |
| 131 | + memset(data, (int) value, size); |
| 132 | +} |
| 133 | + |
| 134 | +void MemoryBlock::append(const void *const srcData, const int numBytes) { |
| 135 | + if (numBytes > 0) { |
| 136 | + const int oldSize = size; |
| 137 | + setSize(size + numBytes); |
| 138 | + memcpy(data + oldSize, srcData, numBytes); |
| 139 | + } |
| 140 | +} |
| 141 | + |
| 142 | +void MemoryBlock::replaceWith(const void *const srcData, const int numBytes) { |
| 143 | + if (numBytes > 0) { |
| 144 | + setSize(numBytes); |
| 145 | + memcpy(data, srcData, numBytes); |
| 146 | + } |
| 147 | +} |
| 148 | + |
| 149 | +void MemoryBlock::insert(const void *const srcData, const int numBytes, int insertPosition) { |
| 150 | + if (numBytes > 0) { |
| 151 | + insertPosition = std::min(insertPosition, size); |
| 152 | + const int trailingDataSize = size - insertPosition; |
| 153 | + setSize(size + numBytes, false); |
| 154 | + |
| 155 | + if (trailingDataSize > 0) |
| 156 | + memmove(data + insertPosition + numBytes, data + insertPosition, |
| 157 | + trailingDataSize); |
| 158 | + |
| 159 | + memcpy(data + insertPosition, srcData, numBytes); |
| 160 | + } |
| 161 | +} |
| 162 | + |
| 163 | +void MemoryBlock::removeSection(const int startByte, const int numBytesToRemove) { |
| 164 | + if (startByte + numBytesToRemove >= size) { |
| 165 | + setSize(startByte); |
| 166 | + } else if (numBytesToRemove > 0) { |
| 167 | + memmove(data + startByte, data + startByte + numBytesToRemove, size - (startByte + numBytesToRemove)); |
| 168 | + |
| 169 | + setSize(size - numBytesToRemove); |
| 170 | + } |
| 171 | +} |
| 172 | + |
| 173 | +void MemoryBlock::copyFrom(const void *const src, int offset, int num) { |
| 174 | + const char *d = static_cast<const char *>(src); |
| 175 | + |
| 176 | + if (offset < 0) { |
| 177 | + d -= offset; |
| 178 | + num += (size_t) -offset; |
| 179 | + offset = 0; |
| 180 | + } |
| 181 | + |
| 182 | + if ((size_t) offset + num > (unsigned int) size) num = size - (size_t) offset; |
| 183 | + |
| 184 | + if (num > 0) memcpy(data + offset, d, num); |
| 185 | +} |
| 186 | + |
| 187 | +void MemoryBlock::copyTo(void *const dst, int offset, int num) const { |
| 188 | + char *d = static_cast<char *>(dst); |
| 189 | + |
| 190 | + if (offset < 0) { |
| 191 | + memset(d, 0, (size_t) -offset); |
| 192 | + d -= offset; |
| 193 | + num -= (size_t) -offset; |
| 194 | + offset = 0; |
| 195 | + } |
| 196 | + |
| 197 | + if ((size_t) offset + num > (unsigned int) size) { |
| 198 | + const int newNum = (size_t) size - (size_t) offset; |
| 199 | + memset(d + newNum, 0, num - newNum); |
| 200 | + num = newNum; |
| 201 | + } |
| 202 | + |
| 203 | + if (num > 0) memcpy(d, data + offset, num); |
| 204 | +} |
| 205 | +} |
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