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b311480e | 1 | // Created on: 2002-04-12 |
2 | // Created by: Alexander GRIGORIEV | |
973c2be1 | 3 | // Copyright (c) 2002-2014 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
11 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
b311480e | 15 | |
7fd59977 | 16 | #include <NCollection_IncAllocator.hxx> |
23be7421 M |
17 | #include <NCollection_DataMap.hxx> |
18 | #include <NCollection_Map.hxx> | |
19 | #include <Standard_Mutex.hxx> | |
7fd59977 | 20 | #include <Standard_OutOfMemory.hxx> |
21 | #include <stdio.h> | |
64531d9c | 22 | #include <fstream> |
23 | #include <iomanip> | |
7fd59977 | 24 | |
7fd59977 | 25 | |
c99551fa K |
26 | namespace |
27 | { | |
28 | ||
29 | inline size_t IMEM_SIZE (const size_t theSize) | |
30 | { | |
31 | return (theSize - 1) / sizeof(NCollection_IncAllocator::aligned_t) + 1; | |
32 | } | |
33 | ||
34 | inline size_t IMEM_ALIGN (const void* theAddress) | |
35 | { | |
36 | return sizeof(NCollection_IncAllocator::aligned_t) * IMEM_SIZE (size_t(theAddress)); | |
37 | } | |
38 | ||
39 | #define IMEM_FREE(p_bl) (size_t(p_bl->p_end_block - p_bl->p_free_space)) | |
40 | ||
0797d9d3 | 41 | #ifdef OCCT_DEBUG |
302f96fb | 42 | // auxiliary dummy function used to get a place where break point can be set |
43 | inline void place_for_breakpoint() {} | |
74d80fb9 | 44 | #endif |
5640d653 | 45 | } |
7fd59977 | 46 | |
47 | #define MaxLookup 16 | |
48 | ||
23be7421 M |
49 | static Standard_Boolean IS_DEBUG = Standard_False; |
50 | ||
51 | //======================================================================= | |
52 | /** | |
53 | * Static data map (address -> AllocatorID) | |
54 | */ | |
55 | //======================================================================= | |
56 | static NCollection_DataMap<Standard_Address, Standard_Size>& StorageIDMap() | |
57 | { | |
58 | static NCollection_DataMap<Standard_Address, Standard_Size> TheMap; | |
59 | return TheMap; | |
60 | } | |
61 | ||
62 | //======================================================================= | |
63 | /** | |
64 | * Static map (AllocatorID) | |
65 | */ | |
66 | //======================================================================= | |
67 | static NCollection_Map<Standard_Size>& StorageIDSet() | |
68 | { | |
69 | static NCollection_Map<Standard_Size> TheMap; | |
70 | return TheMap; | |
71 | } | |
72 | ||
73 | //======================================================================= | |
74 | //function : IncAllocator_SetDebugFlag | |
75 | //purpose : Turn on/off debugging of memory allocation | |
76 | //======================================================================= | |
77 | ||
78 | Standard_EXPORT void IncAllocator_SetDebugFlag(const Standard_Boolean theDebug) | |
79 | { | |
80 | IS_DEBUG = theDebug; | |
81 | } | |
82 | ||
0797d9d3 | 83 | #ifdef OCCT_DEBUG |
302f96fb | 84 | |
23be7421 M |
85 | //======================================================================= |
86 | /** | |
87 | * Static value of the current allocation ID. It provides unique | |
88 | * numbering of allocators. | |
89 | */ | |
90 | //======================================================================= | |
91 | static Standard_Size CurrentID = 0; | |
92 | static Standard_Size CATCH_ID = 0; | |
93 | ||
94 | //======================================================================= | |
95 | //function : Debug_Create | |
96 | //purpose : Store the allocator address in the internal maps | |
97 | //======================================================================= | |
98 | ||
99 | static void Debug_Create(Standard_Address theAlloc) | |
100 | { | |
101 | static Standard_Mutex aMutex; | |
bd0c22ce | 102 | aMutex.Lock(); |
23be7421 M |
103 | StorageIDMap().Bind(theAlloc, ++CurrentID); |
104 | StorageIDSet().Add(CurrentID); | |
23be7421 | 105 | if (CurrentID == CATCH_ID) |
302f96fb | 106 | place_for_breakpoint(); |
107 | aMutex.Unlock(); | |
23be7421 M |
108 | } |
109 | ||
110 | //======================================================================= | |
111 | //function : Debug_Destroy | |
112 | //purpose : Forget the allocator address from the internal maps | |
113 | //======================================================================= | |
114 | ||
115 | static void Debug_Destroy(Standard_Address theAlloc) | |
116 | { | |
117 | static Standard_Mutex aMutex; | |
bd0c22ce | 118 | aMutex.Lock(); |
23be7421 M |
119 | if (StorageIDMap().IsBound(theAlloc)) |
120 | { | |
121 | Standard_Size anID = StorageIDMap()(theAlloc); | |
122 | StorageIDSet().Remove(anID); | |
123 | StorageIDMap().UnBind(theAlloc); | |
124 | } | |
bd0c22ce | 125 | aMutex.Unlock(); |
23be7421 M |
126 | } |
127 | ||
0797d9d3 | 128 | #endif /* OCCT_DEBUG */ |
302f96fb | 129 | |
23be7421 M |
130 | //======================================================================= |
131 | //function : IncAllocator_PrintAlive | |
132 | //purpose : Outputs the alive numbers to the file inc_alive.d | |
133 | //======================================================================= | |
134 | ||
135 | Standard_EXPORT void IncAllocator_PrintAlive() | |
136 | { | |
64531d9c | 137 | if (StorageIDSet().IsEmpty()) |
138 | { | |
139 | return; | |
140 | } | |
141 | ||
142 | std::ofstream aFileOut ("inc_alive.d", std::ios_base::trunc | std::ios_base::out); | |
143 | if (!aFileOut.is_open()) | |
144 | { | |
145 | std::cout << "failure writing file inc_alive.d" << std::endl; | |
146 | return; | |
147 | } | |
148 | aFileOut.imbue (std::locale ("C")); | |
149 | aFileOut << std::fixed << std::setprecision(1); | |
150 | ||
151 | aFileOut << "Alive IncAllocators (number, size in Kb)\n"; | |
152 | Standard_Size aTotSize = 0; | |
153 | Standard_Integer nbAlloc = 0; | |
154 | for (NCollection_DataMap<Standard_Address, Standard_Size>::Iterator itMap (StorageIDMap()); | |
155 | itMap.More(); itMap.Next()) | |
23be7421 | 156 | { |
64531d9c | 157 | const NCollection_IncAllocator* anAlloc = static_cast<NCollection_IncAllocator*>(itMap.Key()); |
158 | Standard_Size anID = itMap.Value(); | |
159 | Standard_Size aSize = anAlloc->GetMemSize(); | |
160 | aTotSize += aSize; | |
161 | nbAlloc++; | |
162 | aFileOut << std::setw(20) << anID << ' ' | |
163 | << std::setw(20) << (double(aSize) / 1024.0) | |
164 | << '\n'; | |
23be7421 | 165 | } |
64531d9c | 166 | aFileOut << "Total:\n" |
167 | << std::setw(20) << nbAlloc << ' ' | |
168 | << std::setw(20) << (double(aTotSize) / 1024.0) | |
169 | << '\n'; | |
170 | aFileOut.close(); | |
23be7421 M |
171 | } |
172 | ||
7fd59977 | 173 | //======================================================================= |
174 | //function : NCollection_IncAllocator() | |
175 | //purpose : Constructor | |
176 | //======================================================================= | |
177 | ||
178 | NCollection_IncAllocator::NCollection_IncAllocator (const size_t theBlockSize) | |
179 | { | |
180 | #ifdef ALLOC_TRACK_USAGE | |
181 | printf ("\n..NCollection_IncAllocator: Created (%x)\n",this); | |
23be7421 | 182 | #endif |
0797d9d3 | 183 | #ifdef OCCT_DEBUG |
23be7421 M |
184 | if (IS_DEBUG) |
185 | Debug_Create(this); | |
7fd59977 | 186 | #endif |
8ba3c5e0 | 187 | const size_t aDefault = DefaultBlockSize; |
7fd59977 | 188 | const size_t aSize = IMEM_SIZE(sizeof(IBlock)) + |
8ba3c5e0 | 189 | IMEM_SIZE((theBlockSize > 2*sizeof(IBlock)) ? theBlockSize : aDefault); |
7fd59977 | 190 | IBlock * const aBlock = (IBlock *) malloc (aSize * sizeof(aligned_t)); |
191 | myFirstBlock = aBlock; | |
db56cc2d | 192 | mySize = aSize - IMEM_SIZE(sizeof(IBlock)); |
23be7421 | 193 | myMemSize = aSize * sizeof(aligned_t); |
7fd59977 | 194 | if (aBlock == NULL) |
195 | Standard_OutOfMemory::Raise("NCollection_IncAllocator: out of memory"); | |
196 | aBlock -> p_free_space = (aligned_t *) IMEM_ALIGN (&aBlock[1]); | |
197 | aBlock -> p_end_block = ((aligned_t *) aBlock) + aSize; | |
198 | aBlock -> p_next = NULL; | |
199 | } | |
200 | ||
201 | //======================================================================= | |
202 | //function : ~NCollection_IncAllocator | |
203 | //purpose : Destructor | |
204 | //======================================================================= | |
205 | ||
206 | NCollection_IncAllocator::~NCollection_IncAllocator () | |
207 | { | |
0797d9d3 | 208 | #ifdef OCCT_DEBUG |
23be7421 M |
209 | if (IS_DEBUG) |
210 | Debug_Destroy(this); | |
211 | #endif | |
7fd59977 | 212 | Clean(); |
213 | free (myFirstBlock); | |
214 | } | |
215 | ||
216 | //======================================================================= | |
217 | //function : Allocate | |
218 | //purpose : allocate a memory | |
219 | //remark : returns NULL if allocation fails | |
220 | //======================================================================= | |
221 | ||
222 | void * NCollection_IncAllocator::Allocate (const size_t aSize) | |
223 | { | |
224 | aligned_t * aResult = NULL; | |
225 | const size_t cSize = aSize ? IMEM_SIZE(aSize) : 0; | |
226 | ||
227 | if (cSize > mySize) { | |
228 | /* If the requested size exceeds normal allocation size, allocate | |
229 | a separate block and place it as the head of the list */ | |
230 | aResult = (aligned_t *) allocateNewBlock (cSize+1); | |
231 | if (aResult) | |
232 | myFirstBlock -> p_free_space = myFirstBlock -> p_end_block; | |
db56cc2d | 233 | else |
234 | Standard_OutOfMemory::Raise("NCollection_IncAllocator: out of memory"); | |
7fd59977 | 235 | } else |
236 | if (cSize <= IMEM_FREE(myFirstBlock)) { | |
237 | /* If the requested size fits into the free space in the 1st block */ | |
238 | aResult = myFirstBlock -> allocateInBlock (cSize); | |
239 | } else { | |
240 | /* Search for a block in the list with enough free space */ | |
241 | int aMaxLookup = MaxLookup; /* limit the number of blocks to query */ | |
242 | IBlock * aCurrentBlock = myFirstBlock -> p_next; | |
243 | while (aCurrentBlock && aMaxLookup--) { | |
244 | if (cSize <= IMEM_FREE(aCurrentBlock)) { | |
245 | aResult = aCurrentBlock -> allocateInBlock (cSize); | |
246 | break; | |
247 | } | |
248 | aCurrentBlock = aCurrentBlock -> p_next; | |
249 | } | |
250 | if (aResult == NULL) { | |
251 | /* There is no available block with enough free space. Create a new | |
252 | one and place it in the head of the list */ | |
253 | aResult = (aligned_t *) allocateNewBlock (mySize); | |
254 | if (aResult) | |
255 | myFirstBlock -> p_free_space = aResult + cSize; | |
db56cc2d | 256 | else |
257 | { | |
258 | const size_t aDefault = IMEM_SIZE(DefaultBlockSize); | |
259 | if (cSize > aDefault) | |
260 | Standard_OutOfMemory::Raise("NCollection_IncAllocator: out of memory"); | |
261 | else | |
262 | { | |
263 | aResult = (aligned_t *) allocateNewBlock (aDefault); | |
264 | if (aResult) | |
265 | myFirstBlock -> p_free_space = aResult + cSize; | |
266 | else | |
267 | Standard_OutOfMemory::Raise("NCollection_IncAllocator: out of memory"); | |
268 | } | |
269 | } | |
7fd59977 | 270 | } |
271 | } | |
272 | return aResult; | |
273 | } | |
274 | ||
275 | //======================================================================= | |
276 | //function : Reallocate | |
277 | //purpose : | |
278 | //======================================================================= | |
279 | ||
280 | void * NCollection_IncAllocator::Reallocate (void * theAddress, | |
281 | const size_t oldSize, | |
282 | const size_t newSize) | |
283 | { | |
284 | // Check that the dummy parameters are OK | |
285 | if (theAddress == NULL || oldSize == 0) | |
286 | return Allocate (newSize); | |
287 | const size_t cOldSize = IMEM_SIZE(oldSize); | |
288 | const size_t cNewSize = newSize ? IMEM_SIZE(newSize) : 0; | |
289 | aligned_t * anAddress = (aligned_t *) theAddress; | |
290 | ||
291 | // We check only the LAST allocation to do the real extension/contraction | |
292 | if (anAddress + cOldSize == myFirstBlock -> p_free_space) { | |
293 | myFirstBlock -> p_free_space = anAddress; | |
294 | // If the new size fits into the memory block => OK | |
295 | // This also includes any case of contraction | |
296 | if (cNewSize <= IMEM_FREE(myFirstBlock)) { | |
297 | myFirstBlock -> p_free_space += cNewSize; | |
298 | return anAddress; | |
299 | } | |
300 | } | |
301 | // In case of contraction of non-terminating allocation, do nothing | |
302 | else if (cOldSize >= cNewSize) | |
303 | return anAddress; | |
304 | // Extension of non-terminated allocation if there is enough room in the | |
305 | // current memory block | |
306 | if (cNewSize <= IMEM_FREE(myFirstBlock)) { | |
307 | aligned_t * aResult = myFirstBlock -> allocateInBlock (cNewSize); | |
308 | if (aResult) | |
309 | for (unsigned i = 0; i < cOldSize; i++) | |
310 | aResult[i] = anAddress[i]; | |
311 | return aResult; | |
312 | } | |
313 | ||
314 | // This is either of the cases: | |
315 | // - extension of non-terminating allocation, or | |
316 | // - extension of terminating allocation when the new size is too big | |
317 | // In both cases create a new memory block, allocate memory and copy there | |
318 | // the reallocated memory. | |
db56cc2d | 319 | size_t cMaxSize = mySize > cNewSize ? mySize : cNewSize; |
320 | aligned_t * aResult = (aligned_t *) allocateNewBlock (cMaxSize); | |
7fd59977 | 321 | if (aResult) { |
322 | myFirstBlock -> p_free_space = aResult + cNewSize; | |
323 | for (unsigned i = 0; i < cOldSize; i++) | |
324 | aResult[i] = anAddress[i]; | |
325 | } | |
db56cc2d | 326 | else |
327 | { | |
328 | Standard_OutOfMemory::Raise("NCollection_IncAllocator: out of memory"); | |
329 | } | |
7fd59977 | 330 | return aResult; |
331 | } | |
332 | ||
333 | //======================================================================= | |
334 | //function : Free | |
335 | //purpose : | |
336 | //======================================================================= | |
337 | ||
338 | void NCollection_IncAllocator::Free (void *) | |
339 | {} | |
340 | ||
341 | //======================================================================= | |
342 | //function : Clean | |
343 | //purpose : | |
344 | //======================================================================= | |
345 | ||
346 | void NCollection_IncAllocator::Clean () | |
347 | { | |
348 | #ifdef ALLOC_TRACK_USAGE | |
349 | printf ("\n..NCollection_IncAllocator: Memory size to clean:%8.1f kB (%x)\n", | |
350 | double(GetMemSize())/1024, this); | |
351 | #endif | |
352 | IBlock * aBlock = myFirstBlock; | |
353 | if (aBlock) { | |
354 | aBlock -> p_free_space = (aligned_t *) &aBlock[1]; | |
355 | aBlock = aBlock -> p_next; | |
356 | while (aBlock) { | |
357 | IBlock * aNext = aBlock -> p_next; | |
358 | free (aBlock); | |
359 | aBlock = aNext; | |
360 | } | |
361 | myFirstBlock -> p_next = NULL; | |
362 | } | |
23be7421 | 363 | myMemSize = 0; |
7fd59977 | 364 | } |
365 | ||
366 | //======================================================================= | |
367 | //function : Reset | |
368 | //purpose : | |
369 | //======================================================================= | |
370 | ||
371 | void NCollection_IncAllocator::Reset (const Standard_Boolean doReleaseMem) | |
372 | { | |
373 | if (doReleaseMem) | |
374 | Clean(); | |
375 | else { | |
376 | Standard_Integer aBlockCount(0); | |
377 | IBlock * aBlock = myFirstBlock; | |
378 | while (aBlock) | |
379 | if (aBlockCount++ < MaxLookup) { | |
380 | aBlock -> p_free_space = (aligned_t *) &aBlock[1]; | |
381 | if (aBlockCount < MaxLookup) | |
382 | aBlock = aBlock -> p_next; | |
383 | else { | |
384 | IBlock * aNext = aBlock -> p_next; | |
385 | aBlock -> p_next = NULL; | |
386 | aBlock = aNext; | |
387 | } | |
388 | } else { | |
389 | IBlock * aNext = aBlock -> p_next; | |
23be7421 | 390 | myMemSize -= (aBlock -> p_end_block - (aligned_t *) aBlock) * sizeof (aligned_t); |
7fd59977 | 391 | free (aBlock); |
392 | aBlock = aNext; | |
393 | } | |
394 | } | |
395 | } | |
396 | ||
397 | //======================================================================= | |
398 | //function : GetMemSize | |
399 | //purpose : diagnostic utility | |
400 | //======================================================================= | |
401 | ||
402 | size_t NCollection_IncAllocator::GetMemSize () const | |
403 | { | |
23be7421 M |
404 | // size_t aResult = 0; |
405 | // IBlock * aBlock = myFirstBlock; | |
406 | // while (aBlock) { | |
407 | // aResult += (aBlock -> p_end_block - (aligned_t *) aBlock); | |
408 | // aBlock = aBlock -> p_next; | |
409 | // } | |
410 | // return aResult * sizeof (aligned_t); | |
411 | return myMemSize; | |
7fd59977 | 412 | } |
413 | ||
414 | //======================================================================= | |
415 | //function : allocateNewBlock | |
416 | //purpose : | |
417 | //======================================================================= | |
418 | ||
419 | void * NCollection_IncAllocator::allocateNewBlock (const size_t cSize) | |
420 | { | |
421 | aligned_t * aResult = 0L; | |
422 | const size_t aSz = cSize + IMEM_SIZE(sizeof(IBlock)); | |
423 | IBlock * aBlock = (IBlock *) malloc (aSz * sizeof(aligned_t)); | |
424 | if (aBlock) { | |
425 | aBlock -> p_end_block = ((aligned_t *)aBlock) + aSz; | |
426 | aBlock -> p_next = myFirstBlock; | |
427 | myFirstBlock = aBlock; | |
428 | aResult = (aligned_t *) IMEM_ALIGN(&aBlock[1]); | |
23be7421 | 429 | myMemSize += aSz * sizeof(aligned_t); |
7fd59977 | 430 | } |
7fd59977 | 431 | return aResult; |
432 | } |