1 | // [Blend2D] |
2 | // 2D Vector Graphics Powered by a JIT Compiler. |
3 | // |
4 | // [License] |
5 | // Zlib - See LICENSE.md file in the package. |
6 | |
7 | #ifndef BLEND2D_BLZEROALLOCATOR_P_H |
8 | #define BLEND2D_BLZEROALLOCATOR_P_H |
9 | |
10 | #include "./blapi-internal_p.h" |
11 | |
12 | //! \cond INTERNAL |
13 | //! \addtogroup blend2d_internal |
14 | //! \{ |
15 | |
16 | // ============================================================================ |
17 | // [BLZeroMem] |
18 | // ============================================================================ |
19 | |
20 | BL_HIDDEN void* blZeroAllocatorAlloc(size_t size, size_t* allocatedSize) noexcept; |
21 | BL_HIDDEN void* blZeroAllocatorResize(void* prevPtr, size_t prevSize, size_t size, size_t* allocatedSize) noexcept; |
22 | BL_HIDDEN void blZeroAllocatorRelease(void* ptr, size_t size) noexcept; |
23 | |
24 | // ============================================================================ |
25 | // [BLZeroBuffer] |
26 | // ============================================================================ |
27 | |
28 | //! Memory buffer that is initially zeroed and that must be zeroed upon release. |
29 | class BLZeroBuffer { |
30 | public: |
31 | BL_NONCOPYABLE(BLZeroBuffer) |
32 | |
33 | //! Zero allocated data. |
34 | uint8_t* data; |
35 | //! Size of the buffer. |
36 | size_t size; |
37 | |
38 | // -------------------------------------------------------------------------- |
39 | // [Construction / Destruction] |
40 | // -------------------------------------------------------------------------- |
41 | |
42 | BL_INLINE BLZeroBuffer() noexcept |
43 | : data(nullptr), |
44 | size(0) {} |
45 | |
46 | BL_INLINE BLZeroBuffer(BLZeroBuffer&& other) noexcept |
47 | : data(other.data), |
48 | size(other.size) { |
49 | other.data = nullptr; |
50 | other.size = 0; |
51 | } |
52 | |
53 | BL_INLINE ~BLZeroBuffer() noexcept { |
54 | if (data) |
55 | blZeroAllocatorRelease(data, size); |
56 | } |
57 | |
58 | // -------------------------------------------------------------------------- |
59 | // [Allocation] |
60 | // -------------------------------------------------------------------------- |
61 | |
62 | BL_INLINE BLResult ensure(size_t minimumSize) noexcept { |
63 | if (minimumSize <= size) |
64 | return BL_SUCCESS; |
65 | |
66 | data = static_cast<uint8_t*>(blZeroAllocatorResize(data, size, minimumSize, &size)); |
67 | return data ? BL_SUCCESS : blTraceError(BL_ERROR_OUT_OF_MEMORY); |
68 | } |
69 | |
70 | BL_INLINE void release() noexcept { |
71 | if (data) { |
72 | blZeroAllocatorRelease(data, size); |
73 | data = nullptr; |
74 | size = 0; |
75 | } |
76 | } |
77 | }; |
78 | |
79 | //! \} |
80 | //! \endcond |
81 | |
82 | #endif // BLEND2D_BLZEROALLOCATOR_P_H |
83 | |