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small optimizations, use bitwise aligne

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This commit is contained in:
daan 2019-07-22 20:51:12 -07:00
parent 66b8c37ab3
commit 189ad0f81d
9 changed files with 59 additions and 32 deletions
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11
include/mimalloc-types.h
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@ -132,10 +132,9 @@ typedef union mi_page_flags_u {
} mi_page_flags_t;
// Thread free list.
// We use bottom 2 bits of the pointer for mi_delayed_t flags
// We use the bottom 2 bits of the pointer for mi_delayed_t flags
typedef uintptr_t mi_thread_free_t;
// A page contains blocks of one specific size (`block_size`).
// Each page has three list of free blocks:
// `free` for blocks that can be allocated,
@ -165,9 +164,11 @@ typedef struct mi_page_s {
mi_page_flags_t flags;
uint16_t capacity; // number of blocks committed
uint16_t reserved; // number of blocks reserved in memory
mi_block_t* free; // list of available free blocks (`malloc` allocates from this list)
#if MI_SECURE
uintptr_t cookie; // random cookie to encode the free lists
#endif
size_t used; // number of blocks in use (including blocks in `local_free` and `thread_free`)
mi_block_t* local_free; // list of deferred free blocks by this thread (migrates to `free`)
@ -182,9 +183,9 @@ typedef struct mi_page_s {
// improve page index calculation
#if MI_INTPTR_SIZE==8
//void* padding[1]; // 10 words on 64-bit
//void* padding[1]; // 12 words on 64-bit
#elif MI_INTPTR_SIZE==4
void* padding[1]; // 12 words on 32-bit
void* padding[1]; // 12 words on 32-bit
#endif
} mi_page_t;