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wip: increase commit mask resolution

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This commit is contained in:
daan 2021-11-09 20:19:31 -08:00
parent c17878d1a7
commit 49c75a3157
6 changed files with 255 additions and 127 deletions
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31
include/mimalloc-types.h
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@ -83,9 +83,9 @@ terms of the MIT license. A copy of the license can be found in the file
// or otherwise one might define an intptr_t type that is larger than a pointer...
// ------------------------------------------------------
#if INTPTR_MAX == 9223372036854775807LL
#if INTPTR_MAX == INT64_MAX
# define MI_INTPTR_SHIFT (3)
#elif INTPTR_MAX == 2147483647LL
#elif INTPTR_MAX == INT32_MAX
# define MI_INTPTR_SHIFT (2)
#else
#error platform must be 32 or 64 bits
@ -94,6 +94,18 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_INTPTR_SIZE (1<<MI_INTPTR_SHIFT)
#define MI_INTPTR_BITS (MI_INTPTR_SIZE*8)
#if SIZE_MAX == UINT64_MAX
# define MI_SIZE_SHIFT (3)
#elif SIZE_MAX == UINT32_MAX
# define MI_SIZE_SHIFT (2)
#else
#error platform must be 32 or 64 bits
#endif
#define MI_SIZE_SIZE (1<<MI_INTPTR_SHIFT)
#define MI_SIZE_BITS (MI_INTPTR_SIZE*8)
#define KiB ((size_t)1024)
#define MiB (KiB*KiB)
#define GiB (MiB*KiB)
@ -275,17 +287,22 @@ typedef enum mi_segment_kind_e {
MI_SEGMENT_HUGE, // > MI_LARGE_SIZE_MAX segment with just one huge page inside.
} mi_segment_kind_t;
#define MI_COMMIT_SIZE (MI_SEGMENT_SIZE/MI_INTPTR_BITS)
#define MI_COMMIT_SIZE (128*1024)
#define MI_COMMIT_MASK_BITS (MI_SEGMENT_SIZE / MI_COMMIT_SIZE)
#define MI_COMMIT_MASK_FIELD_BITS MI_SIZE_BITS
#define MI_COMMIT_MASK_N (MI_COMMIT_MASK_BITS / MI_COMMIT_MASK_FIELD_BITS)
#if (((1 << MI_SEGMENT_SHIFT)/MI_COMMIT_SIZE) > 8*MI_INTPTR_SIZE)
#error "not enough commit bits to cover the segment size"
#if (MI_COMMIT_MASK_BITS != (MI_COMMIT_MASK_N * MI_COMMIT_MASK_FIELD_BITS))
#error "the segment size must be exactly divisible by the (commit size * size_t bits)"
#endif
typedef mi_page_t mi_slice_t;
typedef struct mi_commit_mask_s {
size_t mask[MI_COMMIT_MASK_N];
} mi_commit_mask_t;
typedef mi_page_t mi_slice_t;
typedef int64_t mi_msecs_t;
typedef uintptr_t mi_commit_mask_t;
// Segments are large allocated memory blocks (8mb on 64 bit) from
// the OS. Inside segments we allocated fixed size _pages_ that