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Add Memory::alloc_static_zeroed to allocate memory that's filled with zeroes.

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This is generally faster than `malloc` followed by `memset` / loop-set to 0.
This commit is contained in:
Lukas Tenbrink
2025-03-14 15:15:09 +01:00
parent db66343528
commit 3207066e19
8 changed files with 32 additions and 47 deletions
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3
core/os/memory.h
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@ -54,7 +54,9 @@ public:
static constexpr size_t ELEMENT_OFFSET = ((SIZE_OFFSET + sizeof(uint64_t)) % alignof(uint64_t) == 0) ? (SIZE_OFFSET + sizeof(uint64_t)) : ((SIZE_OFFSET + sizeof(uint64_t)) + alignof(uint64_t) - ((SIZE_OFFSET + sizeof(uint64_t)) % alignof(uint64_t)));
static constexpr size_t DATA_OFFSET = ((ELEMENT_OFFSET + sizeof(uint64_t)) % alignof(max_align_t) == 0) ? (ELEMENT_OFFSET + sizeof(uint64_t)) : ((ELEMENT_OFFSET + sizeof(uint64_t)) + alignof(max_align_t) - ((ELEMENT_OFFSET + sizeof(uint64_t)) % alignof(max_align_t)));
template <bool p_ensure_zero = false>
static void *alloc_static(size_t p_bytes, bool p_pad_align = false);
_FORCE_INLINE_ static void *alloc_static_zeroed(size_t p_bytes, bool p_pad_align = false) { return alloc_static<true>(p_bytes, p_pad_align); }
static void *realloc_static(void *p_memory, size_t p_bytes, bool p_pad_align = false);
static void free_static(void *p_ptr, bool p_pad_align = false);
@ -107,6 +109,7 @@ void operator delete(void *p_mem, void *p_pointer, size_t check, const char *p_d
#endif
#define memalloc(m_size) Memory::alloc_static(m_size)
#define memalloc_zeroed(m_size) Memory::alloc_static_zeroed(m_size)
#define memrealloc(m_mem, m_size) Memory::realloc_static(m_mem, m_size)
#define memfree(m_mem) Memory::free_static(m_mem)