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allow configuring page and segment sizes (pr #753 and pr #862)

This commit is contained in:
Daan 2024-04-20 16:45:49 -07:00
parent 79ab7c63d7
commit 7247b9e326
1 changed files with 8 additions and 0 deletions
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8
include/mimalloc/types.h
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@ -160,10 +160,18 @@ typedef int32_t mi_ssize_t;
// Main tuning parameters for segment and page sizes
// Sizes for 64-bit, divide by two for 32-bit
#ifndef MI_SMALL_PAGE_SHIFT
#define MI_SMALL_PAGE_SHIFT (13 + MI_INTPTR_SHIFT) // 64KiB
#endif
#ifndef MI_MEDIUM_PAGE_SHIFT
#define MI_MEDIUM_PAGE_SHIFT ( 3 + MI_SMALL_PAGE_SHIFT) // 512KiB
#endif
#ifndef MI_LARGE_PAGE_SHIFT
#define MI_LARGE_PAGE_SHIFT ( 3 + MI_MEDIUM_PAGE_SHIFT) // 4MiB
#endif
#ifndef MI_SEGMENT_SHIFT
#define MI_SEGMENT_SHIFT ( MI_LARGE_PAGE_SHIFT) // 4MiB -- must be equal to `MI_LARGE_PAGE_SHIFT`
#endif
// Derived constants
#define MI_SEGMENT_SIZE (MI_ZU(1)<<MI_SEGMENT_SHIFT)