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merge from dev (visit abandoned, upstream of python/cpython#114133)

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Daan 2024-06-02 17:03:13 -07:00
commit f77adf4a18
21 changed files with 755 additions and 315 deletions
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include/mimalloc.h
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@ -263,7 +263,7 @@ typedef struct mi_heap_area_s {
typedef bool (mi_cdecl mi_block_visit_fun)(const mi_heap_t* heap, const mi_heap_area_t* area, void* block, size_t block_size, void* arg);
mi_decl_export bool mi_heap_visit_blocks(const mi_heap_t* heap, bool visit_all_blocks, mi_block_visit_fun* visitor, void* arg);
mi_decl_export bool mi_heap_visit_blocks(const mi_heap_t* heap, bool visit_blocks, mi_block_visit_fun* visitor, void* arg);
// Experimental
mi_decl_nodiscard mi_decl_export bool mi_is_in_heap_region(const void* p) mi_attr_noexcept;
@ -289,8 +289,25 @@ mi_decl_export bool mi_manage_os_memory_ex(void* start, size_t size, bool is_co
mi_decl_nodiscard mi_decl_export mi_heap_t* mi_heap_new_in_arena(mi_arena_id_t arena_id);
#endif
// Experimental: allow sub-processes whose memory segments stay separated (and no reclamation between them)
// Used for example for separate interpreter's in one process.
typedef void* mi_subproc_id_t;
mi_decl_export mi_subproc_id_t mi_subproc_main(void);
mi_decl_export mi_subproc_id_t mi_subproc_new(void);
mi_decl_export void mi_subproc_delete(mi_subproc_id_t subproc);
mi_decl_export void mi_subproc_add_current_thread(mi_subproc_id_t subproc); // this should be called right after a thread is created (and no allocation has taken place yet)
// Experimental: visit abandoned heap areas (from threads that have been terminated)
mi_decl_export bool mi_abandoned_visit_blocks(mi_subproc_id_t subproc_id, int heap_tag, bool visit_blocks, mi_block_visit_fun* visitor, void* arg);
// Experimental: create a new heap with a specified heap tag. Set `allow_destroy` to false to allow the thread
// to reclaim abandoned memory (with a compatible heap_tag and arena_id) but in that case `mi_heap_destroy` will
// fall back to `mi_heap_delete`.
mi_decl_export mi_decl_nodiscard mi_heap_t* mi_heap_new_ex(int heap_tag, bool allow_destroy, mi_arena_id_t arena_id);
// deprecated
mi_decl_export int mi_reserve_huge_os_pages(size_t pages, double max_secs, size_t* pages_reserved) mi_attr_noexcept;
mi_decl_export int mi_reserve_huge_os_pages(size_t pages, double max_secs, size_t* pages_reserved) mi_attr_noexcept;
// ------------------------------------------------------
@ -348,6 +365,7 @@ typedef enum mi_option_e {
mi_option_abandoned_reclaim_on_free, // allow to reclaim an abandoned segment on a free (=1)
mi_option_disallow_arena_alloc, // 1 = do not use arena's for allocation (except if using specific arena id's)
mi_option_retry_on_oom, // retry on out-of-memory for N milli seconds (=400), set to 0 to disable retries. (only on windows)
mi_option_visit_abandoned, // allow visiting heap blocks from abandoned threads (=0)
_mi_option_last,
// legacy option names
mi_option_large_os_pages = mi_option_allow_large_os_pages,