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align size of page_t, increase slices per segment

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Daan Leijen 2020-01-22 11:29:32 -08:00
parent 0028272cf4
commit caa5e51a67
4 changed files with 24 additions and 16 deletions
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8
include/mimalloc-types.h
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@ -89,7 +89,7 @@ terms of the MIT license. A copy of the license can be found in the file
// Main tuning parameters for segment and page sizes
// Sizes for 64-bit, divide by two for 32-bit
#define MI_SEGMENT_SLICE_SHIFT (13 + MI_INTPTR_SHIFT) // 64kb
#define MI_SEGMENT_SHIFT ( 8 + MI_SEGMENT_SLICE_SHIFT) // 64mb
#define MI_SEGMENT_SHIFT ( 9 + MI_SEGMENT_SLICE_SHIFT) // 64mb
#define MI_SMALL_PAGE_SHIFT (MI_SEGMENT_SLICE_SHIFT) // 64kb
#define MI_MEDIUM_PAGE_SHIFT ( 3 + MI_SMALL_PAGE_SHIFT) // 512kb
@ -104,7 +104,7 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_SMALL_PAGE_SIZE (1ULL<<MI_SMALL_PAGE_SHIFT)
#define MI_MEDIUM_PAGE_SIZE (1ULL<<MI_MEDIUM_PAGE_SHIFT)
#define MI_SMALL_OBJ_SIZE_MAX (MI_SMALL_PAGE_SIZE/8) // 8kb on 64-bit
#define MI_SMALL_OBJ_SIZE_MAX (MI_SMALL_PAGE_SIZE/4) // 8kb on 64-bit
#define MI_MEDIUM_OBJ_SIZE_MAX (MI_MEDIUM_PAGE_SIZE/4) // 128kb on 64-bit
#define MI_MEDIUM_OBJ_WSIZE_MAX (MI_MEDIUM_OBJ_SIZE_MAX/MI_INTPTR_SIZE) // 64kb on 64-bit
@ -226,6 +226,10 @@ typedef struct mi_page_s {
struct mi_page_s* next; // next page owned by this thread with the same `block_size`
struct mi_page_s* prev; // previous page owned by this thread with the same `block_size`
// 64-bit 9 words, 32-bit 12 words, (+2 for secure)
#if MI_INTPTR_SIZE==8
uintptr_t padding[1];
#endif
} mi_page_t;

3
src/init.c
View file

@ -28,6 +28,9 @@ const mi_page_t _mi_page_empty = {
ATOMIC_VAR_INIT(0), // xthread_free
ATOMIC_VAR_INIT(0), // xheap
NULL, NULL
#if MI_INTPTR_SIZE==8
, { 0 } // padding
#endif
};
#define MI_PAGE_EMPTY() ((mi_page_t*)&_mi_page_empty)

4
src/page.c
View file

@ -74,10 +74,10 @@ static bool mi_page_is_valid_init(mi_page_t* page) {
mi_assert_internal(page->used <= page->capacity);
mi_assert_internal(page->capacity <= page->reserved);
const size_t bsize = mi_page_block_size(page);
mi_segment_t* segment = _mi_page_segment(page);
uint8_t* start = _mi_page_start(segment,page,NULL);
mi_assert_internal(start == _mi_segment_page_start(segment,page,NULL));
//const size_t bsize = mi_page_block_size(page);
//mi_assert_internal(start + page->capacity*page->block_size == page->top);
mi_assert_internal(mi_page_list_is_valid(page,page->free));
@ -86,7 +86,7 @@ static bool mi_page_is_valid_init(mi_page_t* page) {
#if MI_DEBUG>3 // generally too expensive to check this
if (page->flags.is_zero) {
for(mi_block_t* block = page->free; block != NULL; mi_block_next(page,block)) {
mi_assert_expensive(mi_mem_is_zero(block + 1, page->block_size - sizeof(mi_block_t)));
mi_assert_expensive(mi_mem_is_zero(block + 1, bsize - sizeof(mi_block_t)));
}
}
#endif

1
src/segment.c
View file

@ -458,6 +458,7 @@ static void mi_segment_delayed_decommit(mi_segment_t* segment, bool force, mi_st
mask >>= 1;
idx++;
}
mi_assert_internal(segment->decommit_mask == 0);
}
static void mi_segment_span_free(mi_segment_t* segment, size_t slice_index, size_t slice_count, mi_segments_tld_t* tld) {