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Add mi_alloc_init_t to indicate whether memory should be zero-filled or unitialized.

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The latter means "fill with MI_DEBUG_UNINIT" in debug mode.
This commit is contained in:
Frank Richter 2021-12-19 20:51:28 +01:00
parent 5a7685de0e
commit 7cd7224e3e
4 changed files with 34 additions and 29 deletions
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4
include/mimalloc-internal.h
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@ -138,8 +138,8 @@ mi_msecs_t _mi_clock_start(void);
// "alloc.c"
void* _mi_page_malloc(mi_heap_t* heap, mi_page_t* page, size_t size) mi_attr_noexcept; // called from `_mi_malloc_generic`
void* _mi_heap_malloc_zero(mi_heap_t* heap, size_t size, bool zero);
void* _mi_heap_realloc_zero(mi_heap_t* heap, void* p, size_t newsize, bool zero);
void* _mi_heap_malloc_zero(mi_heap_t* heap, size_t size, mi_alloc_init_t init);
void* _mi_heap_realloc_zero(mi_heap_t* heap, void* p, size_t newsize, mi_alloc_init_t init);
mi_block_t* _mi_page_ptr_unalign(const mi_segment_t* segment, const mi_page_t* page, const void* p);
bool _mi_free_delayed_block(mi_block_t* block);
void _mi_block_zero_init(const mi_page_t* page, void* p, size_t size);

5
include/mimalloc-types.h
View file

@ -167,6 +167,11 @@ typedef int32_t mi_ssize_t;
// Used as a special value to encode block sizes in 32 bits.
#define MI_HUGE_BLOCK_SIZE ((uint32_t)MI_HUGE_OBJ_SIZE_MAX)
typedef enum mi_alloc_init_e {
MI_ALLOC_UNINIT = 0, // uninitialized memory (debug mode: fill with MI_DEBUG_UNINIT)
MI_ALLOC_ZERO_INIT = 1 // zero-initialize memory
} mi_alloc_init_t;
// ------------------------------------------------------
// Mimalloc pages contain allocated blocks