1- /* **************************************************************************************
2- * file : shared_allocator.cpp
3- * data : 2016/03/05
4- * author : Victor Zarubkin
5- * contact : v.s.zarubkin@gmail.com
6- * copyright : Copyright (C) 2016 Victor Zarubkin
7- * :
8- * description : This header contains implementation of shared_allocate,
9- * : shared_deallocate and shared_size functions.
10- * :
11- * references : Original (and actual) version of source code can be found
12- * : here <http://www.github.com/cas4ey/shared_allocator>.
13- * :
14- * license : This file is part of SharedAllocator.
15- * :
16- * : The MIT License (MIT)
17- * : Permission is hereby granted, free of charge, to any person
18- * : obtaining a copy of this software and associated documentation
19- * : files (the "Software"), to deal in the Software without
20- * : restriction, including without limitation the rights to use,
21- * : copy, modify, merge, publish, distribute, sublicense, and/or sell
22- * : copies of the Software, and to permit persons to whom the Software
23- * : is furnished to do so, subject to the following conditions:
24- * :
25- * : The above copyright notice and this permission notice shall be
26- * : included in all copies or substantial portions of the Software.
27- * :
28- * : THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29- * : EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
30- * : OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
31- * : IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
32- * : ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
33- * : TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
34- * : OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35- ****************************************************************************************/
36-
37- #include < xstddef>
38- #include < type_traits>
39- #include < malloc.h>
40-
41- // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
42- // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
43-
44- #if defined(WIN32) || defined(_WIN32) || defined(_WIN64)
45-
46- # define SHARED_ALLOCATOR_DLLEXPORT __declspec (dllexport)
47-
48- #else
49-
50- # define SHARED_ALLOCATOR_DLLEXPORT
51-
52- #endif // defined(WIN32) || defined(_WIN32) || defined(_WIN64)
53-
54- extern " C"
55- {
56- /* * \brief Allocate new memory.
57-
58- \param _bytesNumber Required bytes number including already preallocated size of _currentMemory (if exist).
59- \param _currentMemory Pointer to existing memory buffer (if exist). If it's size is greater than _bytesNumber then no new memory would be allocated. */
60- SHARED_ALLOCATOR_DLLEXPORT void * shared_allocate (size_t _bytesNumber, void * _currentMemory = nullptr )
61- {
1+ /* **************************************************************************************
2+ * file : shared_allocator.cpp
3+ * data : 2016/03/05
4+ * author : Victor Zarubkin
5+ * contact : v.s.zarubkin@gmail.com
6+ * copyright : Copyright (C) 2016 Victor Zarubkin
7+ * :
8+ * description : This header contains implementation of shared_allocate,
9+ * : shared_deallocate and shared_size functions.
10+ * :
11+ * references : Original (and actual) version of source code can be found
12+ * : here <http://www.github.com/cas4ey/shared_allocator>.
13+ * :
14+ * license : This file is part of SharedAllocator.
15+ * :
16+ * : The MIT License (MIT)
17+ * : Permission is hereby granted, free of charge, to any person
18+ * : obtaining a copy of this software and associated documentation
19+ * : files (the "Software"), to deal in the Software without
20+ * : restriction, including without limitation the rights to use,
21+ * : copy, modify, merge, publish, distribute, sublicense, and/or sell
22+ * : copies of the Software, and to permit persons to whom the Software
23+ * : is furnished to do so, subject to the following conditions:
24+ * :
25+ * : The above copyright notice and this permission notice shall be
26+ * : included in all copies or substantial portions of the Software.
27+ * :
28+ * : THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29+ * : EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
30+ * : OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
31+ * : IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
32+ * : ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
33+ * : TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
34+ * : OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35+ ****************************************************************************************/
36+
37+ #include < type_traits>
38+ #include < malloc.h>
39+
40+ // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
41+ // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
42+
43+ #if defined(WIN32) || defined(_WIN32) || defined(_WIN64)
44+
45+ # define SHARED_ALLOCATOR_DLLEXPORT __declspec (dllexport)
46+
47+ #else
48+
49+ # define SHARED_ALLOCATOR_DLLEXPORT
50+
51+ #endif // defined(WIN32) || defined(_WIN32) || defined(_WIN64)
52+
53+ extern " C"
54+ {
55+ /* * \brief Allocate new memory.
56+
57+ \param _bytesNumber Required bytes number including already preallocated size of _currentMemory (if exist).
58+ \param _currentMemory Pointer to existing memory buffer (if exist). If it's size is greater than _bytesNumber then no new memory would be allocated. */
59+ SHARED_ALLOCATOR_DLLEXPORT void * shared_allocate (size_t _bytesNumber, void * _currentMemory = nullptr )
60+ {
6261 if (_currentMemory == nullptr )
6362 {
6463 size_t * newMemory = reinterpret_cast <size_t *>(malloc (_bytesNumber + sizeof (size_t )));
@@ -74,39 +73,39 @@ extern "C"
7473
7574 size_t * newMemory = reinterpret_cast <size_t *>(realloc (pMemory, _bytesNumber + sizeof (size_t )));
7675 *newMemory = _bytesNumber;
77- return static_cast <void *>(newMemory + 1 );
78- }
79-
80- /* * \brief Deallocate memory.
81-
82- \param _currentMemory Pointer to existing memory buffer to be deallocated.
83-
84- \warning Pointer to _currentMemory after this operation will be invalid. */
85- SHARED_ALLOCATOR_DLLEXPORT void shared_deallocate (void * _currentMemory)
86- {
76+ return static_cast <void *>(newMemory + 1 );
77+ }
78+
79+ /* * \brief Deallocate memory.
80+
81+ \param _currentMemory Pointer to existing memory buffer to be deallocated.
82+
83+ \warning Pointer to _currentMemory after this operation will be invalid. */
84+ SHARED_ALLOCATOR_DLLEXPORT void shared_deallocate (void * _currentMemory)
85+ {
8786 if (_currentMemory != nullptr )
8887 {
8988 size_t * pMemory = reinterpret_cast <size_t *>(_currentMemory) - 1 ;
90- free (pMemory);
91- }
92- }
93-
94- /* * \brief Returns memory size in bytes.
95-
96- \param _currentMemory Pointer to existing memory buffer. */
97- SHARED_ALLOCATOR_DLLEXPORT size_t shared_size (const void * _currentMemory)
98- {
89+ free (pMemory);
90+ }
91+ }
92+
93+ /* * \brief Returns memory size in bytes.
94+
95+ \param _currentMemory Pointer to existing memory buffer. */
96+ SHARED_ALLOCATOR_DLLEXPORT size_t shared_size (const void * _currentMemory)
97+ {
9998 if (_currentMemory != nullptr )
10099 {
101- return *(reinterpret_cast <const size_t *>(_currentMemory) - 1 );
102- }
103-
104- return 0 ;
105- }
106-
107- }
108-
109- #undef SHARED_ALLOCATOR_DLLEXPORT
110-
111- // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
112- // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
100+ return *(reinterpret_cast <const size_t *>(_currentMemory) - 1 );
101+ }
102+
103+ return 0 ;
104+ }
105+
106+ }
107+
108+ #undef SHARED_ALLOCATOR_DLLEXPORT
109+
110+ // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
111+ // ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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