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check heaptag on abandonded page allocation

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daanx 2024-12-07 15:13:17 -08:00
parent 6b52b19e3b
commit bf42759d97
4 changed files with 24 additions and 14 deletions
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13
include/mimalloc/types.h
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@ -237,6 +237,8 @@ typedef uintptr_t mi_thread_free_t;
// Sub processes are used to keep memory separate between them (e.g. multiple interpreters in CPython)
typedef struct mi_subproc_s mi_subproc_t;
// A heap can serve only specific objects signified by its heap tag (e.g. various object types in CPython)
typedef uint8_t mi_heaptag_t;
// A page contains blocks of one specific size (`block_size`).
// Each page has three list of free blocks:
@ -280,7 +282,7 @@ typedef struct mi_page_s {
size_t block_size; // size available in each block (always `>0`)
uint8_t* page_start; // start of the blocks
uint8_t heap_tag; // tag of the owning heap, used to separate heaps by object type
mi_heaptag_t heap_tag; // tag of the owning heap, used to separate heaps by object type
bool free_is_zero; // `true` if the blocks in the free list are zero initialized
// padding
#if (MI_ENCODE_FREELIST || MI_PADDING)
@ -411,7 +413,16 @@ struct mi_heap_s {
mi_page_queue_t pages[MI_BIN_FULL + 1]; // queue of pages for each size class (or "bin")
};
// ------------------------------------------------------
// Arena's
// These are large reserved areas of memory allocated from
// the OS that are managed by mimalloc to efficiently
// allocate MI_SLICE_SIZE slices of memory for the
// mimalloc pages.
// ------------------------------------------------------
// A large memory arena where pages are allocated in.
typedef struct mi_arena_s mi_arena_t;
// ------------------------------------------------------
// Debug