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prefix UNUSED,KiB,MiB,GiB; add mi_threadid_t type; add mi_ssize_t

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daan 2021-11-13 14:46:03 -08:00
parent 959845540d
commit 28896e5b19
14 changed files with 198 additions and 166 deletions
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64
include/mimalloc-types.h
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@ -17,7 +17,7 @@ terms of the MIT license. A copy of the license can be found in the file
#endif
// Minimal alignment necessary. On most platforms 16 bytes are needed
// due to SSE registers for example. This must be at least `MI_INTPTR_SIZE`
// due to SSE registers for example. This must be at least `sizeof(void*)`
#ifndef MI_MAX_ALIGN_SIZE
#define MI_MAX_ALIGN_SIZE 16 // sizeof(max_align_t)
#endif
@ -67,6 +67,7 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_ENCODE_FREELIST 1
#endif
// ------------------------------------------------------
// Platform specific values
// ------------------------------------------------------
@ -83,20 +84,43 @@ terms of the MIT license. A copy of the license can be found in the file
// or otherwise one might define an intptr_t type that is larger than a pointer...
// ------------------------------------------------------
#if INTPTR_MAX == 9223372036854775807LL
#if INTPTR_MAX > INT64_MAX
# define MI_INTPTR_SHIFT (4) // assume 128-bit (as on arm CHERI for example)
#elif INTPTR_MAX == INT64_MAX
# define MI_INTPTR_SHIFT (3)
#elif INTPTR_MAX == 2147483647LL
#elif INTPTR_MAX == INT32_MAX
# define MI_INTPTR_SHIFT (2)
#else
#error platform must be 32 or 64 bits
#error platform pointers must be 32, 64, or 128 bits
#endif
#if SIZE_MAX == UINT64_MAX
# define MI_SIZE_SHIFT (3)
typedef int64_t mi_ssize_t;
#elif SIZE_MAX == UINT32_MAX
# define MI_SIZE_SHIFT (2)
typedef int32_t mi_ssize_t;
#else
#error platform objects must be 32 or 64 bits
#endif
#if (SIZE_MAX/2) > LONG_MAX
# define MI_ZU(x) x##ULL
# define MI_ZI(x) x##LL
#else
# define MI_ZU(x) x##UL
# define MI_ZI(x) x##L
#endif
#define MI_INTPTR_SIZE (1<<MI_INTPTR_SHIFT)
#define MI_INTPTR_BITS (MI_INTPTR_SIZE*8)
#define KiB ((size_t)1024)
#define MiB (KiB*KiB)
#define GiB (MiB*KiB)
#define MI_SIZE_SIZE (1<<MI_SIZE_SHIFT)
#define MI_SIZE_BITS (MI_SIZE_SIZE*8)
#define MI_KiB (MI_ZU(1024))
#define MI_MiB (MI_KiB*MI_KiB)
#define MI_GiB (MI_MiB*MI_KiB)
// ------------------------------------------------------
@ -111,12 +135,12 @@ terms of the MIT license. A copy of the license can be found in the file
#define MI_SEGMENT_SHIFT ( MI_LARGE_PAGE_SHIFT) // 4MiB
// Derived constants
#define MI_SEGMENT_SIZE (1UL<<MI_SEGMENT_SHIFT)
#define MI_SEGMENT_MASK ((uintptr_t)MI_SEGMENT_SIZE - 1)
#define MI_SEGMENT_SIZE (MI_ZU(1)<<MI_SEGMENT_SHIFT)
#define MI_SEGMENT_MASK (MI_SEGMENT_SIZE - 1)
#define MI_SMALL_PAGE_SIZE (1UL<<MI_SMALL_PAGE_SHIFT)
#define MI_MEDIUM_PAGE_SIZE (1UL<<MI_MEDIUM_PAGE_SHIFT)
#define MI_LARGE_PAGE_SIZE (1UL<<MI_LARGE_PAGE_SHIFT)
#define MI_SMALL_PAGE_SIZE (MI_ZU(1)<<MI_SMALL_PAGE_SHIFT)
#define MI_MEDIUM_PAGE_SIZE (MI_ZU(1)<<MI_MEDIUM_PAGE_SHIFT)
#define MI_LARGE_PAGE_SIZE (MI_ZU(1)<<MI_LARGE_PAGE_SHIFT)
#define MI_SMALL_PAGES_PER_SEGMENT (MI_SEGMENT_SIZE/MI_SMALL_PAGE_SIZE)
#define MI_MEDIUM_PAGES_PER_SEGMENT (MI_SEGMENT_SIZE/MI_MEDIUM_PAGE_SIZE)
@ -140,9 +164,17 @@ terms of the MIT license. A copy of the license can be found in the file
// Used as a special value to encode block sizes in 32 bits.
#define MI_HUGE_BLOCK_SIZE ((uint32_t)MI_HUGE_OBJ_SIZE_MAX)
// ------------------------------------------------------
// Mimalloc pages contain allocated blocks
// ------------------------------------------------------
// The free lists use encoded next fields
// (Only actually encodes when MI_ENCODED_FREELIST is defined.)
typedef uintptr_t mi_encoded_t;
typedef uintptr_t mi_encoded_t;
// thread id's
typedef size_t mi_threadid_t;
// free lists contain blocks
typedef struct mi_block_s {
@ -279,8 +311,8 @@ typedef struct mi_segment_s {
uintptr_t cookie; // verify addresses in secure mode: `_mi_ptr_cookie(segment) == segment->cookie`
// layout like this to optimize access in `mi_free`
size_t page_shift; // `1 << page_shift` == the page sizes == `page->block_size * page->reserved` (unless the first page, then `-segment_info_size`).
_Atomic(uintptr_t) thread_id; // unique id of the thread owning this segment
size_t page_shift; // `1 << page_shift` == the page sizes == `page->block_size * page->reserved` (unless the first page, then `-segment_info_size`).
_Atomic(mi_threadid_t) thread_id; // unique id of the thread owning this segment
mi_page_kind_t page_kind; // kind of pages: small, large, or huge
mi_page_t pages[1]; // up to `MI_SMALL_PAGES_PER_SEGMENT` pages
} mi_segment_t;
@ -341,7 +373,7 @@ struct mi_heap_s {
mi_page_t* pages_free_direct[MI_PAGES_DIRECT]; // optimize: array where every entry points a page with possibly free blocks in the corresponding queue for that size.
mi_page_queue_t pages[MI_BIN_FULL + 1]; // queue of pages for each size class (or "bin")
_Atomic(mi_block_t*) thread_delayed_free;
uintptr_t thread_id; // thread this heap belongs too
mi_threadid_t thread_id; // thread this heap belongs too
uintptr_t cookie; // random cookie to verify pointers (see `_mi_ptr_cookie`)
uintptr_t keys[2]; // two random keys used to encode the `thread_delayed_free` list
mi_random_ctx_t random; // random number context used for secure allocation