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merge from dev-exp; better abandoned reclamation

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daan 2020-01-27 22:12:23 -08:00
commit b50bec463d
25 changed files with 661 additions and 337 deletions
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43
include/mimalloc-internal.h
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@ -20,13 +20,20 @@ terms of the MIT license. A copy of the license can be found in the file
#define mi_trace_message(...)
#endif
#define MI_CACHE_LINE 64
#if defined(_MSC_VER)
#pragma warning(disable:4127) // constant conditional due to MI_SECURE paths
#define mi_decl_noinline __declspec(noinline)
#elif defined(__GNUC__) || defined(__clang__)
#define mi_decl_noinline __attribute__((noinline))
#pragma warning(disable:4127) // suppress constant conditional warning (due to MI_SECURE paths)
#define mi_decl_noinline __declspec(noinline)
#define mi_decl_thread __declspec(thread)
#define mi_decl_cache_align __declspec(align(MI_CACHE_LINE))
#elif (defined(__GNUC__) && (__GNUC__>=3)) // includes clang and icc
#define mi_decl_noinline __attribute__((noinline))
#define mi_decl_thread __thread
#define mi_decl_cache_align __attribute__((aligned(MI_CACHE_LINE)))
#else
#define mi_decl_noinline
#define mi_decl_thread __thread // hope for the best :-)
#define mi_decl_cache_align
#endif
@ -72,13 +79,15 @@ void _mi_arena_free(void* p, size_t size, size_t memid, bool is_committed,
// "segment.c"
mi_page_t* _mi_segment_page_alloc(size_t block_wsize, mi_segments_tld_t* tld, mi_os_tld_t* os_tld);
mi_page_t* _mi_segment_page_alloc(mi_heap_t* heap, size_t block_wsize, mi_segments_tld_t* tld, mi_os_tld_t* os_tld);
void _mi_segment_page_free(mi_page_t* page, bool force, mi_segments_tld_t* tld);
void _mi_segment_page_abandon(mi_page_t* page, mi_segments_tld_t* tld);
bool _mi_segment_try_reclaim_abandoned( mi_heap_t* heap, bool try_all, mi_segments_tld_t* tld);
void _mi_segment_thread_collect(mi_segments_tld_t* tld);
uint8_t* _mi_segment_page_start(const mi_segment_t* segment, const mi_page_t* page, size_t* page_size); // page start for any page
void _mi_abandoned_reclaim_all(mi_heap_t* heap, mi_segments_tld_t* tld);
void _mi_abandoned_await_readers(void);
// "page.c"
void* _mi_malloc_generic(mi_heap_t* heap, size_t size) mi_attr_noexcept mi_attr_malloc;
@ -421,30 +430,24 @@ static inline mi_thread_free_t mi_tf_set_block(mi_thread_free_t tf, mi_block_t*
return mi_tf_make(block, mi_tf_delayed(tf));
}
// are all blocks in a page freed?
// are all blocks in a page freed?
// note: needs up-to-date used count, (as the `xthread_free` list may not be empty). see `_mi_page_collect_free`.
static inline bool mi_page_all_free(const mi_page_t* page) {
mi_assert_internal(page != NULL);
return (page->used == 0);
}
// are there immediately available blocks
// are there any available blocks?
static inline bool mi_page_has_any_available(const mi_page_t* page) {
mi_assert_internal(page != NULL && page->reserved > 0);
return (page->used < page->reserved || (mi_page_thread_free(page) != NULL));
}
// are there immediately available blocks, i.e. blocks available on the free list.
static inline bool mi_page_immediate_available(const mi_page_t* page) {
mi_assert_internal(page != NULL);
return (page->free != NULL);
}
// are there free blocks in this page?
static inline bool mi_page_has_free(mi_page_t* page) {
mi_assert_internal(page != NULL);
bool hasfree = (mi_page_immediate_available(page) || page->local_free != NULL || (mi_page_thread_free(page) != NULL));
mi_assert_internal(hasfree || page->used == page->capacity);
return hasfree;
}
// are all blocks in use?
static inline bool mi_page_all_used(mi_page_t* page) {
mi_assert_internal(page != NULL);
return !mi_page_has_free(page);
}
// is more than 7/8th of a page in use?
static inline bool mi_page_mostly_used(const mi_page_t* page) {