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enable initial lazy commit and optional decommit to reduce commit charge with many threads

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daan 2019-08-24 15:00:55 -07:00
parent 612b2cc9b7
commit 6f5492cef8
6 changed files with 125 additions and 46 deletions
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5
include/mimalloc-internal.h
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@ -191,6 +191,11 @@ static inline uintptr_t _mi_align_up(uintptr_t sz, size_t alignment) {
}
}
static inline uintptr_t _mi_align_down(uintptr_t sz, size_t alignment) {
return (sz / alignment) * alignment;
}
// Align a byte size to a size in _machine words_,
// i.e. byte size == `wsize*sizeof(void*)`.
static inline size_t _mi_wsize_from_size(size_t size) {

6
include/mimalloc-types.h
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@ -84,7 +84,7 @@ terms of the MIT license. A copy of the license can be found in the file
// Derived constants
#define MI_SEGMENT_SIZE ((size_t)1<<MI_SEGMENT_SHIFT)
#define MI_SEGMENT_MASK (MI_SEGMENT_SIZE - 1)
#define MI_SEGMENT_SLICE_SIZE ((size_t)1 << MI_SEGMENT_SLICE_SHIFT)
#define MI_SEGMENT_SLICE_SIZE ((size_t)1<< MI_SEGMENT_SLICE_SHIFT)
#define MI_SLICES_PER_SEGMENT (MI_SEGMENT_SIZE / MI_SEGMENT_SLICE_SIZE) // 1024
#define MI_SMALL_PAGE_SIZE (1<<MI_SMALL_PAGE_SHIFT)
@ -209,9 +209,9 @@ 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 ((size_t)2 << 20) // OS large page size
#define MI_COMMIT_SIZE (2UL<<20) // OS large page size
#if ((MI_SEGMENT_SIZE / MI_COMMIT_SIZE) > MI_INTPTR_SIZE)
#if ((1 << MI_SEGMENT_SHIFT)/MI_COMMIT_SIZE > 8*MI_INTPTR_SIZE)
#error "not enough commit bits to cover the segment size"
#endif

6
include/mimalloc.h
View file

@ -225,9 +225,9 @@ typedef enum mi_option_e {
mi_option_verbose,
// the following options are experimental
mi_option_secure,
mi_option_eager_commit,
mi_option_eager_region_commit,
mi_option_large_os_pages, // implies eager commit
mi_option_lazy_commit,
mi_option_decommit,
mi_option_large_os_pages,
mi_option_reserve_huge_os_pages,
mi_option_page_reset,
mi_option_cache_reset,