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comparison foosdk/sdk/pfc/memalign.h @ 1:20d02a178406 default tip

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*: check in everything else yay
author Paper <paper@tflc.us>
date Mon, 05 Jan 2026 02:15:46 -0500
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0:e9bb126753e7 1:20d02a178406
1 #pragma once
2
3 namespace pfc {
4
5 void alignedAlloc( void* & ptr, size_t & ptrSize, size_t newSize, size_t alignBytes);
6 void * alignedAlloc( size_t size, size_t align );
7 void alignedFree( void * ptr );
8
9 template<unsigned alignBytes = 16>
10 class mem_block_aligned {
11 public:
12 typedef mem_block_aligned<alignBytes> self_t;
13 mem_block_aligned() : m_ptr(), m_size() {}
14
15 void * ptr() {return m_ptr;}
16 const void * ptr() const {return m_ptr;}
17 void * get_ptr() {return m_ptr;}
18 const void * get_ptr() const {return m_ptr;}
19 size_t size() const {return m_size;}
20 size_t get_size() const {return m_size;}
21
22 void resize(size_t s) {
23 alignedAlloc( m_ptr, m_size, s, alignBytes );
24 }
25 void set_size(size_t s) {resize(s);}
26
27 ~mem_block_aligned() {
28 alignedFree(m_ptr);
29 }
30
31 self_t const & operator=(self_t const & other) {
32 assign(other);
33 return *this;
34 }
35 mem_block_aligned(self_t const & other) : m_ptr(), m_size() {
36 assign(other);
37 }
38 void assign(self_t const & other) {
39 resize(other.size());
40 memcpy(ptr(), other.ptr(), size());
41 }
42 mem_block_aligned(self_t && other) {
43 m_ptr = other.m_ptr;
44 m_size = other.m_size;
45 other.m_ptr = NULL; other.m_size = 0;
46 }
47 self_t const & operator=(self_t && other) {
48 alignedFree(m_ptr);
49 m_ptr = other.m_ptr;
50 m_size = other.m_size;
51 other.m_ptr = NULL; other.m_size = 0;
52 return *this;
53 }
54
55 private:
56 void * m_ptr;
57 size_t m_size;
58 };
59
60 template<typename obj_t, unsigned alignBytes = 16>
61 class mem_block_aligned_t {
62 public:
63 typedef mem_block_aligned_t<obj_t, alignBytes> self_t;
64 void resize(size_t s) { m.resize( multiply_guarded(s, sizeof(obj_t) ) ); }
65 void set_size(size_t s) {resize(s);}
66 size_t size() const { return m.size() / sizeof(obj_t); }
67 size_t get_size() const {return size();}
68 obj_t * ptr() { return reinterpret_cast<obj_t*>(m.ptr()); }
69 const obj_t * ptr() const { return reinterpret_cast<const obj_t*>(m.ptr()); }
70 obj_t * get_ptr() { return reinterpret_cast<obj_t*>(m.ptr()); }
71 const obj_t * get_ptr() const { return reinterpret_cast<const obj_t*>(m.ptr()); }
72 mem_block_aligned_t() {}
73 private:
74 mem_block_aligned<alignBytes> m;
75 };
76
77 template<typename obj_t, unsigned alignBytes = 16>
78 class mem_block_aligned_incremental_t {
79 public:
80 typedef mem_block_aligned_t<obj_t, alignBytes> self_t;
81
82 void resize(size_t s) {
83 if (s > m.size()) {
84 m.resize( multiply_guarded<size_t>(s, 3) / 2 );
85 }
86 m_size = s;
87 }
88 void set_size(size_t s) {resize(s);}
89
90 size_t size() const { return m_size; }
91 size_t get_size() const {return m_size; }
92
93 obj_t * ptr() { return m.ptr(); }
94 const obj_t * ptr() const { return m.ptr(); }
95 obj_t * get_ptr() { return m.ptr(); }
96 const obj_t * get_ptr() const { return m.ptr(); }
97 mem_block_aligned_incremental_t() : m_size() {}
98 mem_block_aligned_incremental_t(self_t const & other) : m(other.m), m_size(other.m_size) {}
99 mem_block_aligned_incremental_t(self_t && other) : m(std::move(other.m)), m_size(other.m_size) { other.m_size = 0; }
100 self_t const & operator=(self_t const & other) {m = other.m; m_size = other.m_size; return *this;}
101 self_t const & operator=(self_t && other) {m = std::move(other.m); m_size = other.m_size; other.m_size = 0; return *this;}
102 private:
103 mem_block_aligned_t<obj_t, alignBytes> m;
104 size_t m_size;
105 };
106 }