1 /* Copyright (C) 2010 Wildfire Games.
2  *
3  * Permission is hereby granted, free of charge, to any person obtaining
4  * a copy of this software and associated documentation files (the
5  * "Software"), to deal in the Software without restriction, including
6  * without limitation the rights to use, copy, modify, merge, publish,
7  * distribute, sublicense, and/or sell copies of the Software, and to
8  * permit persons to whom the Software is furnished to do so, subject to
9  * the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included
12  * in all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
15  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
17  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
18  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
19  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
20  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21  */
22 
23 #ifndef INCLUDED_ALLOCATORS_SHARED_PTR
24 #define INCLUDED_ALLOCATORS_SHARED_PTR
25 
26 #include "lib/alignment.h"
27 #include "lib/sysdep/rtl.h" // rtl_AllocateAligned
28 
29 struct DummyDeleter
30 {
31 	template<class T>
operatorDummyDeleter32 	void operator()(T*)
33 	{
34 	}
35 };
36 
37 template<class T>
DummySharedPtr(T * ptr)38 inline shared_ptr<T> DummySharedPtr(T* ptr)
39 {
40 	return shared_ptr<T>(ptr, DummyDeleter());
41 }
42 
43 struct ArrayDeleter
44 {
45 	template<class T>
operatorArrayDeleter46 	void operator()(T* p)
47 	{
48 		delete[] p;
49 	}
50 };
51 
52 // (note: uses CheckedArrayDeleter)
53 LIB_API shared_ptr<u8> Allocate(size_t size);
54 
55 
56 struct AlignedDeleter
57 {
58 	template<class T>
operatorAlignedDeleter59 	void operator()(T* t)
60 	{
61 		rtl_FreeAligned(t);
62 	}
63 };
64 
65 template<class T>
66 static inline Status AllocateAligned(shared_ptr<T>& p, size_t size, size_t alignment = cacheLineSize)
67 {
68 	void* mem = rtl_AllocateAligned(size, alignment);
69 	if(!mem)
70 		WARN_RETURN(ERR::NO_MEM);
71 	p.reset((T*)mem, AlignedDeleter());
72 	return INFO::OK;
73 }
74 
75 #endif	// #ifndef INCLUDED_ALLOCATORS_SHARED_PTR
76