1 | /*****************************************************************************/ |
2 | // Copyright 2006 Adobe Systems Incorporated |
3 | // All Rights Reserved. |
4 | // |
5 | // NOTICE: Adobe permits you to use, modify, and distribute this file in |
6 | // accordance with the terms of the Adobe license agreement accompanying it. |
7 | /*****************************************************************************/ |
8 | |
9 | /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_memory.cpp#1 $ */ |
10 | /* $DateTime: 2012/05/30 13:28:51 $ */ |
11 | /* $Change: 832332 $ */ |
12 | /* $Author: tknoll $ */ |
13 | |
14 | /*****************************************************************************/ |
15 | |
16 | #include "dng_memory.h" |
17 | |
18 | #include "dng_bottlenecks.h" |
19 | #include "dng_exceptions.h" |
20 | #include "dng_safe_arithmetic.h" |
21 | |
22 | /*****************************************************************************/ |
23 | |
24 | dng_memory_data::dng_memory_data () |
25 | |
26 | : fBuffer (NULL) |
27 | |
28 | { |
29 | |
30 | } |
31 | |
32 | /*****************************************************************************/ |
33 | |
34 | dng_memory_data::dng_memory_data (uint32 size) |
35 | |
36 | : fBuffer (NULL) |
37 | |
38 | { |
39 | |
40 | Allocate (size); |
41 | |
42 | } |
43 | |
44 | /*****************************************************************************/ |
45 | |
46 | dng_memory_data::dng_memory_data (uint32 count, std::size_t elementSize) |
47 | |
48 | : fBuffer (NULL) |
49 | |
50 | { |
51 | |
52 | Allocate (count, elementSize); |
53 | |
54 | } |
55 | |
56 | /*****************************************************************************/ |
57 | |
58 | dng_memory_data::~dng_memory_data () |
59 | { |
60 | |
61 | Clear (); |
62 | |
63 | } |
64 | |
65 | /*****************************************************************************/ |
66 | |
67 | void dng_memory_data::Allocate (uint32 size) |
68 | { |
69 | |
70 | Clear (); |
71 | |
72 | if (size) |
73 | { |
74 | |
75 | fBuffer = (char*)malloc (size); |
76 | |
77 | if (!fBuffer) |
78 | { |
79 | |
80 | ThrowMemoryFull (); |
81 | |
82 | } |
83 | |
84 | } |
85 | |
86 | } |
87 | |
88 | /*****************************************************************************/ |
89 | |
90 | void dng_memory_data::Allocate (uint32 count, std::size_t elementSize) |
91 | { |
92 | |
93 | // Convert elementSize to a uint32. |
94 | const uint32 elementSizeAsUint32 = static_cast<uint32> (elementSize); |
95 | if (static_cast<std::size_t> (elementSizeAsUint32) != elementSize) |
96 | { |
97 | ThrowMemoryFull(); |
98 | } |
99 | |
100 | // Compute required number of bytes and allocate memory. |
101 | uint32 numBytes; |
102 | if (!SafeUint32Mult(count, elementSizeAsUint32, &numBytes)) |
103 | { |
104 | ThrowMemoryFull(); |
105 | } |
106 | Allocate(numBytes); |
107 | |
108 | } |
109 | |
110 | void dng_memory_data::Clear () |
111 | { |
112 | |
113 | if (fBuffer) |
114 | { |
115 | |
116 | free (fBuffer); |
117 | |
118 | fBuffer = NULL; |
119 | |
120 | } |
121 | |
122 | } |
123 | |
124 | /*****************************************************************************/ |
125 | |
126 | dng_memory_block * dng_memory_block::Clone (dng_memory_allocator &allocator) const |
127 | { |
128 | |
129 | uint32 size = LogicalSize (); |
130 | |
131 | dng_memory_block * result = allocator.Allocate (size); |
132 | |
133 | DoCopyBytes (Buffer (), result->Buffer (), size); |
134 | |
135 | return result; |
136 | |
137 | } |
138 | |
139 | /*****************************************************************************/ |
140 | |
141 | class dng_malloc_block : public dng_memory_block |
142 | { |
143 | |
144 | private: |
145 | |
146 | void *fMalloc; |
147 | |
148 | public: |
149 | |
150 | dng_malloc_block (uint32 logicalSize); |
151 | |
152 | virtual ~dng_malloc_block (); |
153 | |
154 | private: |
155 | |
156 | // Hidden copy constructor and assignment operator. |
157 | |
158 | dng_malloc_block (const dng_malloc_block &block); |
159 | |
160 | dng_malloc_block & operator= (const dng_malloc_block &block); |
161 | |
162 | }; |
163 | |
164 | /*****************************************************************************/ |
165 | |
166 | dng_malloc_block::dng_malloc_block (uint32 logicalSize) |
167 | |
168 | : dng_memory_block (logicalSize) |
169 | |
170 | , fMalloc (NULL) |
171 | |
172 | { |
173 | |
174 | #if (qLinux && !defined(__ANDROID_API__)) || (defined(__ANDROID_API__) && __ANDROID_API__ >= 17) |
175 | |
176 | int err = ::posix_memalign( (void **) &fMalloc, 16, (size_t) PhysicalSize() ); |
177 | |
178 | if (err) |
179 | { |
180 | |
181 | ThrowMemoryFull (); |
182 | |
183 | } |
184 | |
185 | #else |
186 | |
187 | fMalloc = (char*)malloc (PhysicalSize ()); |
188 | |
189 | if (!fMalloc) |
190 | { |
191 | |
192 | ThrowMemoryFull (); |
193 | |
194 | } |
195 | |
196 | #endif |
197 | |
198 | SetBuffer (fMalloc); |
199 | |
200 | } |
201 | |
202 | /*****************************************************************************/ |
203 | |
204 | dng_malloc_block::~dng_malloc_block () |
205 | { |
206 | |
207 | if (fMalloc) |
208 | { |
209 | |
210 | free (fMalloc); |
211 | |
212 | } |
213 | |
214 | } |
215 | |
216 | /*****************************************************************************/ |
217 | |
218 | dng_memory_block * dng_memory_allocator::Allocate (uint32 size) |
219 | { |
220 | |
221 | dng_memory_block *result = new dng_malloc_block (size); |
222 | |
223 | if (!result) |
224 | { |
225 | |
226 | ThrowMemoryFull (); |
227 | |
228 | } |
229 | |
230 | return result; |
231 | |
232 | } |
233 | |
234 | /*****************************************************************************/ |
235 | |
236 | dng_memory_allocator gDefaultDNGMemoryAllocator; |
237 | |
238 | /*****************************************************************************/ |
239 | |