Mercurial > foo_out_sdl
diff foosdk/sdk/pfc/memalign.h @ 1:20d02a178406 default tip
*: check in everything else
yay
| author | Paper <paper@tflc.us> |
|---|---|
| date | Mon, 05 Jan 2026 02:15:46 -0500 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/foosdk/sdk/pfc/memalign.h Mon Jan 05 02:15:46 2026 -0500 @@ -0,0 +1,106 @@ +#pragma once + +namespace pfc { + + void alignedAlloc( void* & ptr, size_t & ptrSize, size_t newSize, size_t alignBytes); + void * alignedAlloc( size_t size, size_t align ); + void alignedFree( void * ptr ); + + template<unsigned alignBytes = 16> + class mem_block_aligned { + public: + typedef mem_block_aligned<alignBytes> self_t; + mem_block_aligned() : m_ptr(), m_size() {} + + void * ptr() {return m_ptr;} + const void * ptr() const {return m_ptr;} + void * get_ptr() {return m_ptr;} + const void * get_ptr() const {return m_ptr;} + size_t size() const {return m_size;} + size_t get_size() const {return m_size;} + + void resize(size_t s) { + alignedAlloc( m_ptr, m_size, s, alignBytes ); + } + void set_size(size_t s) {resize(s);} + + ~mem_block_aligned() { + alignedFree(m_ptr); + } + + self_t const & operator=(self_t const & other) { + assign(other); + return *this; + } + mem_block_aligned(self_t const & other) : m_ptr(), m_size() { + assign(other); + } + void assign(self_t const & other) { + resize(other.size()); + memcpy(ptr(), other.ptr(), size()); + } + mem_block_aligned(self_t && other) { + m_ptr = other.m_ptr; + m_size = other.m_size; + other.m_ptr = NULL; other.m_size = 0; + } + self_t const & operator=(self_t && other) { + alignedFree(m_ptr); + m_ptr = other.m_ptr; + m_size = other.m_size; + other.m_ptr = NULL; other.m_size = 0; + return *this; + } + + private: + void * m_ptr; + size_t m_size; + }; + + template<typename obj_t, unsigned alignBytes = 16> + class mem_block_aligned_t { + public: + typedef mem_block_aligned_t<obj_t, alignBytes> self_t; + void resize(size_t s) { m.resize( multiply_guarded(s, sizeof(obj_t) ) ); } + void set_size(size_t s) {resize(s);} + size_t size() const { return m.size() / sizeof(obj_t); } + size_t get_size() const {return size();} + obj_t * ptr() { return reinterpret_cast<obj_t*>(m.ptr()); } + const obj_t * ptr() const { return reinterpret_cast<const obj_t*>(m.ptr()); } + obj_t * get_ptr() { return reinterpret_cast<obj_t*>(m.ptr()); } + const obj_t * get_ptr() const { return reinterpret_cast<const obj_t*>(m.ptr()); } + mem_block_aligned_t() {} + private: + mem_block_aligned<alignBytes> m; + }; + + template<typename obj_t, unsigned alignBytes = 16> + class mem_block_aligned_incremental_t { + public: + typedef mem_block_aligned_t<obj_t, alignBytes> self_t; + + void resize(size_t s) { + if (s > m.size()) { + m.resize( multiply_guarded<size_t>(s, 3) / 2 ); + } + m_size = s; + } + void set_size(size_t s) {resize(s);} + + size_t size() const { return m_size; } + size_t get_size() const {return m_size; } + + obj_t * ptr() { return m.ptr(); } + const obj_t * ptr() const { return m.ptr(); } + obj_t * get_ptr() { return m.ptr(); } + const obj_t * get_ptr() const { return m.ptr(); } + mem_block_aligned_incremental_t() : m_size() {} + mem_block_aligned_incremental_t(self_t const & other) : m(other.m), m_size(other.m_size) {} + mem_block_aligned_incremental_t(self_t && other) : m(std::move(other.m)), m_size(other.m_size) { other.m_size = 0; } + self_t const & operator=(self_t const & other) {m = other.m; m_size = other.m_size; return *this;} + self_t const & operator=(self_t && other) {m = std::move(other.m); m_size = other.m_size; other.m_size = 0; return *this;} + private: + mem_block_aligned_t<obj_t, alignBytes> m; + size_t m_size; + }; +}
