1 | // |
2 | // Redistribution and use in source and binary forms, with or without |
3 | // modification, are permitted provided that the following conditions |
4 | // are met: |
5 | // * Redistributions of source code must retain the above copyright |
6 | // notice, this list of conditions and the following disclaimer. |
7 | // * Redistributions in binary form must reproduce the above copyright |
8 | // notice, this list of conditions and the following disclaimer in the |
9 | // documentation and/or other materials provided with the distribution. |
10 | // * Neither the name of NVIDIA CORPORATION nor the names of its |
11 | // contributors may be used to endorse or promote products derived |
12 | // from this software without specific prior written permission. |
13 | // |
14 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY |
15 | // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
16 | // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
17 | // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
18 | // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
19 | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
20 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
21 | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
22 | // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
24 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | // |
26 | // Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved. |
27 | // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved. |
28 | // Copyright (c) 2001-2004 NovodeX AG. All rights reserved. |
29 | |
30 | |
31 | #ifndef PX_DEFAULT_ALLOCATOR_H |
32 | #define PX_DEFAULT_ALLOCATOR_H |
33 | /** \addtogroup extensions |
34 | @{ |
35 | */ |
36 | |
37 | #include "foundation/PxAllocatorCallback.h" |
38 | #include "foundation/PxAssert.h" |
39 | #include "common/PxPhysXCommonConfig.h" |
40 | |
41 | #include <stdlib.h> |
42 | |
43 | #if PX_WINDOWS_FAMILY || PX_LINUX_FAMILY || PX_SWITCH |
44 | #include <malloc.h> |
45 | #endif |
46 | |
47 | #if !PX_DOXYGEN |
48 | namespace physx |
49 | { |
50 | #endif |
51 | |
52 | #if PX_WINDOWS_FAMILY |
53 | // on win32 we only have 8-byte alignment guaranteed, but the CRT provides special aligned allocation fns |
54 | PX_FORCE_INLINE void* platformAlignedAlloc(size_t size) |
55 | { |
56 | return _aligned_malloc(size, 16); |
57 | } |
58 | |
59 | PX_FORCE_INLINE void platformAlignedFree(void* ptr) |
60 | { |
61 | _aligned_free(ptr); |
62 | } |
63 | #elif PX_LINUX_FAMILY || PX_SWITCH |
64 | PX_FORCE_INLINE void* platformAlignedAlloc(size_t size) |
65 | { |
66 | return ::memalign(alignment: 16, size: size); |
67 | } |
68 | |
69 | PX_FORCE_INLINE void platformAlignedFree(void* ptr) |
70 | { |
71 | ::free(ptr: ptr); |
72 | } |
73 | #else |
74 | // on all other platforms we get 16-byte alignment by default |
75 | PX_FORCE_INLINE void* platformAlignedAlloc(size_t size) |
76 | { |
77 | return ::malloc(size); |
78 | } |
79 | |
80 | PX_FORCE_INLINE void platformAlignedFree(void* ptr) |
81 | { |
82 | ::free(ptr); |
83 | } |
84 | #endif |
85 | |
86 | /** |
87 | \brief default implementation of the allocator interface required by the SDK |
88 | */ |
89 | class PxDefaultAllocator : public PxAllocatorCallback |
90 | { |
91 | public: |
92 | void* allocate(size_t size, const char*, const char*, int) |
93 | { |
94 | void* ptr = platformAlignedAlloc(size); |
95 | PX_ASSERT((reinterpret_cast<size_t>(ptr) & 15)==0); |
96 | return ptr; |
97 | } |
98 | |
99 | void deallocate(void* ptr) |
100 | { |
101 | platformAlignedFree(ptr); |
102 | } |
103 | }; |
104 | |
105 | #if !PX_DOXYGEN |
106 | } // namespace physx |
107 | #endif |
108 | |
109 | /** @} */ |
110 | #endif |
111 | |