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b311480e | 1 | // Created on: 2005-03-15 |
2 | // Created by: Peter KURNEV | |
3 | // Copyright (c) 1998-1999 Matra Datavision | |
973c2be1 | 4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
b311480e | 5 | // |
973c2be1 | 6 | // This file is part of Open CASCADE Technology software library. |
b311480e | 7 | // |
d5f74e42 | 8 | // This library is free software; you can redistribute it and/or modify it under |
9 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 10 | // by the Free Software Foundation, with special exception defined in the file |
11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
12 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 13 | // |
973c2be1 | 14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. | |
7fd59977 | 16 | |
17 | #include <Standard.ixx> | |
18 | ||
19 | #include <stdlib.h> | |
20 | ||
21 | #include <Standard_MMgrOpt.hxx> | |
22 | #include <Standard_MMgrRaw.hxx> | |
23 | #include <Standard_MMgrTBBalloc.hxx> | |
24 | ||
af09dbff | 25 | #if(defined(_WIN32) || defined(__WIN32__)) |
91322f44 | 26 | #include <windows.h> |
27 | #include <malloc.h> | |
28 | #include <locale.h> | |
af09dbff | 29 | #endif |
30 | ||
0304f711 | 31 | #if defined(_MSC_VER) || defined(__ANDROID__) |
acc62560 | 32 | #include <malloc.h> |
33 | #elif (defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 1) | |
34 | #include <mm_malloc.h> | |
35 | #else | |
36 | extern "C" int posix_memalign (void** thePtr, size_t theAlign, size_t theSize); | |
37 | #endif | |
38 | ||
a0d8a9fc RL |
39 | #ifndef OCCT_MMGT_OPT_DEFAULT |
40 | #define OCCT_MMGT_OPT_DEFAULT 0 | |
41 | #endif | |
42 | ||
7fd59977 | 43 | //======================================================================= |
44 | //class : Standard_MMgrFactory | |
45 | //purpose : Container for pointer to memory manager; | |
46 | // used to construct appropriate memory manager according | |
47 | // to environment settings, and to ensure destruction upon exit | |
48 | //======================================================================= | |
49 | ||
50 | class Standard_MMgrFactory { | |
51 | public: | |
52 | Standard_MMgrFactory(); | |
53 | ~Standard_MMgrFactory(); | |
54 | public: | |
55 | Standard_MMgrRoot* myFMMgr; | |
56 | }; | |
57 | ||
58 | //======================================================================= | |
59 | //function : Standard_MMgrFactory | |
60 | //purpose : Check environment variables and create appropriate memory manager | |
61 | //======================================================================= | |
62 | ||
af09dbff | 63 | Standard_MMgrFactory::Standard_MMgrFactory() |
64 | : myFMMgr (NULL) | |
7fd59977 | 65 | { |
91322f44 | 66 | /*#if defined(_MSC_VER) && (_MSC_VER > 1400) |
67 | // Turn ON thread-safe C locale globally to avoid side effects by setlocale() calls between threads. | |
68 | // After this call all following _configthreadlocale() will be ignored assuming | |
69 | // Notice that this is MSVCRT feature - on POSIX systems xlocale API (uselocale instead of setlocale) | |
70 | // should be used explicitly to ensure thread-safety! | |
71 | ||
72 | // This is not well documented call because _ENABLE_PER_THREAD_LOCALE_GLOBAL flag is defined but not implemented for some reason. | |
73 | // -1 will set global locale flag to force _ENABLE_PER_THREAD_LOCALE_GLOBAL + _ENABLE_PER_THREAD_LOCALE_NEW behaviour | |
74 | // although there NO way to turn it off again and following calls will have no effect (locale will be changed only for current thread). | |
75 | _configthreadlocale (-1); | |
76 | #endif*/ | |
77 | ||
af09dbff | 78 | char* aVar; |
302f96fb | 79 | aVar = getenv ("MMGT_OPT"); |
80 | Standard_Integer anAllocId = (aVar ? atoi (aVar): OCCT_MMGT_OPT_DEFAULT); | |
75827e76 | 81 | |
82 | #if defined(_WIN32) && !defined(_WIN64) | |
83 | static const DWORD _SSE2_FEATURE_BIT(0x04000000); | |
84 | if ( anAllocId == 2 ) | |
85 | { | |
86 | // CR25396: Check if SSE2 instructions are supported, if not then use MMgrRaw | |
87 | // instead of MMgrTBBalloc. It is to avoid runtime crash when running on a | |
88 | // CPU that supports SSE but does not support SSE2 (some modifications of | |
89 | // AMD Sempron). | |
90 | DWORD volatile dwFeature; | |
91 | _asm | |
92 | { | |
93 | push eax | |
94 | push ebx | |
95 | push ecx | |
96 | push edx | |
97 | ||
98 | // get the CPU feature bits | |
99 | mov eax, 1 | |
100 | cpuid | |
101 | mov dwFeature, edx | |
102 | ||
103 | pop edx | |
104 | pop ecx | |
105 | pop ebx | |
106 | pop eax | |
107 | } | |
108 | if ((dwFeature & _SSE2_FEATURE_BIT) == 0) | |
109 | anAllocId = 0; | |
110 | } | |
111 | #endif | |
112 | ||
302f96fb | 113 | aVar = getenv ("MMGT_CLEAR"); |
114 | Standard_Boolean toClear = (aVar ? (atoi (aVar) != 0) : Standard_True); | |
af09dbff | 115 | |
af09dbff | 116 | // on Windows (actual for XP and 2000) activate low fragmentation heap |
117 | // for CRT heap in order to get best performance. | |
118 | // Environment variable MMGT_LFH can be used to switch off this action (if set to 0) | |
119 | #if defined(_MSC_VER) | |
120 | aVar = getenv ("MMGT_LFH"); | |
121 | if ( aVar == NULL || atoi (aVar) != 0 ) | |
122 | { | |
123 | ULONG aHeapInfo = 2; | |
124 | HANDLE aCRTHeap = (HANDLE)_get_heap_handle(); | |
125 | HeapSetInformation (aCRTHeap, HeapCompatibilityInformation, &aHeapInfo, sizeof(aHeapInfo)); | |
7fd59977 | 126 | } |
af09dbff | 127 | #endif |
128 | ||
af09dbff | 129 | switch (anAllocId) |
130 | { | |
131 | case 1: // OCCT optimized memory allocator | |
132 | { | |
302f96fb | 133 | aVar = getenv ("MMGT_MMAP"); |
134 | Standard_Boolean bMMap = (aVar ? (atoi (aVar) != 0) : Standard_True); | |
135 | aVar = getenv ("MMGT_CELLSIZE"); | |
136 | Standard_Integer aCellSize = (aVar ? atoi (aVar) : 200); | |
137 | aVar = getenv ("MMGT_NBPAGES"); | |
138 | Standard_Integer aNbPages = (aVar ? atoi (aVar) : 1000); | |
139 | aVar = getenv ("MMGT_THRESHOLD"); | |
140 | Standard_Integer aThreshold = (aVar ? atoi (aVar) : 40000); | |
bd0c22ce | 141 | myFMMgr = new Standard_MMgrOpt (toClear, bMMap, aCellSize, aNbPages, aThreshold); |
af09dbff | 142 | break; |
143 | } | |
144 | case 2: // TBB memory allocator | |
145 | myFMMgr = new Standard_MMgrTBBalloc (toClear); | |
146 | break; | |
147 | case 0: | |
148 | default: // system default memory allocator | |
149 | myFMMgr = new Standard_MMgrRaw (toClear); | |
150 | } | |
7fd59977 | 151 | } |
152 | ||
153 | //======================================================================= | |
154 | //function : ~Standard_MMgrFactory | |
155 | //purpose : | |
156 | //======================================================================= | |
157 | ||
158 | Standard_MMgrFactory::~Standard_MMgrFactory() | |
159 | { | |
207e57e4 | 160 | if ( myFMMgr ) { |
7fd59977 | 161 | myFMMgr->Purge(Standard_True); |
162 | // delete myFMMgr; | |
163 | // myFMMgr = 0; | |
164 | } | |
165 | } | |
166 | ||
167 | //======================================================================= | |
168 | // function: GetMMgr | |
169 | // | |
170 | // This static function has a purpose to wrap static holder for memory | |
171 | // manager instance. | |
172 | // | |
173 | // Wrapping holder inside a function is needed to ensure that it will | |
174 | // be initialized not later than the first call to memory manager (that | |
175 | // would be impossible to guarantee if holder was static variable on | |
176 | // global or file scope, because memory manager may be called from | |
177 | // constructors of other static objects). | |
178 | // | |
179 | // Note that at the same time we could not guarantee that the holder | |
180 | // object is destroyed after last call to memory manager, since that | |
181 | // last call may be from static Handle() object which has been initialized | |
182 | // dynamically during program execution rather than in its constructor. | |
183 | // | |
184 | // Therefore holder currently does not call destructor of the memory manager | |
185 | // but only its method Purge() with Standard_True. | |
186 | // | |
187 | // To free the memory completely, we probably could use compiler-specific | |
188 | // pragmas (such as '#pragma fini' on SUN Solaris and '#pragma init_seg' on | |
189 | // WNT MSVC++) to put destructing function in code segment that is called | |
190 | // after destructors of other (even static) objects. However, this is not | |
191 | // done by the moment since it is compiler-dependent and there is no guarantee | |
192 | // thatsome other object calling memory manager is not placed also in that segment... | |
193 | // | |
194 | // Note that C runtime function atexit() could not help in this problem | |
195 | // since its behaviour is the same as for destructors of static objects | |
196 | // (see ISO 14882:1998 "Programming languages -- C++" 3.6.3) | |
197 | // | |
198 | // The correct approach to deal with the problem would be to have memory manager | |
199 | // to properly control its memory allocation and caching free blocks so | |
200 | // as to release all memory as soon as it is returned to it, and probably | |
201 | // even delete itself if all memory it manages has been released and | |
202 | // last call to method Purge() was with True. | |
203 | // | |
204 | // Note that one possible method to control memory allocations could | |
205 | // be counting calls to Allocate() and Free()... | |
206 | // | |
207 | //======================================================================= | |
208 | ||
209 | static Standard_MMgrRoot* GetMMgr() | |
210 | { | |
211 | static Standard_MMgrFactory aFactory; | |
212 | return aFactory.myFMMgr; | |
213 | } | |
214 | ||
215 | //======================================================================= | |
216 | //function : Allocate | |
217 | //purpose : | |
218 | //======================================================================= | |
219 | ||
220 | Standard_Address Standard::Allocate(const Standard_Size size) | |
221 | { | |
222 | return GetMMgr()->Allocate(size); | |
223 | } | |
224 | ||
225 | //======================================================================= | |
acc62560 | 226 | //function : Free |
7fd59977 | 227 | //purpose : |
228 | //======================================================================= | |
229 | ||
547702a1 | 230 | void Standard::Free (Standard_Address theStorage) |
7fd59977 | 231 | { |
547702a1 | 232 | GetMMgr()->Free(theStorage); |
7fd59977 | 233 | } |
234 | ||
235 | //======================================================================= | |
236 | //function : Reallocate | |
237 | //purpose : | |
238 | //======================================================================= | |
239 | ||
547702a1 | 240 | Standard_Address Standard::Reallocate (Standard_Address theStorage, |
241 | const Standard_Size theSize) | |
7fd59977 | 242 | { |
547702a1 | 243 | return GetMMgr()->Reallocate (theStorage, theSize); |
7fd59977 | 244 | } |
245 | ||
246 | //======================================================================= | |
247 | //function : Purge | |
248 | //purpose : | |
249 | //======================================================================= | |
250 | ||
251 | Standard_Integer Standard::Purge() | |
252 | { | |
253 | return GetMMgr()->Purge(); | |
254 | } | |
acc62560 | 255 | |
256 | //======================================================================= | |
257 | //function : AllocateAligned | |
258 | //purpose : | |
259 | //======================================================================= | |
260 | ||
261 | Standard_Address Standard::AllocateAligned (const Standard_Size theSize, | |
262 | const Standard_Size theAlign) | |
263 | { | |
264 | #if defined(_MSC_VER) | |
265 | return _aligned_malloc (theSize, theAlign); | |
0304f711 | 266 | #elif defined(__ANDROID__) |
267 | return memalign (theAlign, theSize); | |
acc62560 | 268 | #elif (defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 1) |
0304f711 | 269 | return _mm_malloc (theSize, theAlign); |
acc62560 | 270 | #else |
271 | void* aPtr; | |
272 | if (posix_memalign (&aPtr, theAlign, theSize)) | |
273 | { | |
274 | return NULL; | |
275 | } | |
276 | return aPtr; | |
277 | #endif | |
278 | } | |
279 | ||
280 | //======================================================================= | |
281 | //function : FreeAligned | |
282 | //purpose : | |
283 | //======================================================================= | |
284 | ||
285 | void Standard::FreeAligned (Standard_Address thePtrAligned) | |
286 | { | |
287 | #if defined(_MSC_VER) | |
288 | _aligned_free (thePtrAligned); | |
0304f711 | 289 | #elif defined(__ANDROID__) |
290 | free (thePtrAligned); | |
acc62560 | 291 | #elif (defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 1) |
292 | _mm_free (thePtrAligned); | |
293 | #else | |
294 | free (thePtrAligned); | |
295 | #endif | |
296 | } |