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add cache alignment directives for contended variables

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This commit is contained in:
daan 2020-01-24 19:02:13 -08:00
parent e070eba112
commit b31bc52618
6 changed files with 27 additions and 23 deletions
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6
src/arena.c
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@ -54,7 +54,7 @@ bool _mi_os_commit(void* p, size_t size, bool* is_zero, mi_stats_t* stats);
#define MI_MAX_ARENAS (64) // not more than 256 (since we use 8 bits in the memid)
// A memory arena descriptor
typedef struct mi_arena_s {
typedef mi_decl_cache_align struct mi_arena_s {
_Atomic(uint8_t*) start; // the start of the memory area
size_t block_count; // size of the area in arena blocks (of `MI_ARENA_BLOCK_SIZE`)
size_t field_count; // number of bitmap fields (where `field_count * MI_BITMAP_FIELD_BITS >= block_count`)
@ -70,8 +70,8 @@ typedef struct mi_arena_s {
// The available arenas
static _Atomic(mi_arena_t*) mi_arenas[MI_MAX_ARENAS];
static _Atomic(uintptr_t) mi_arena_count; // = 0
static mi_decl_cache_align _Atomic(mi_arena_t*) mi_arenas[MI_MAX_ARENAS];
static mi_decl_cache_align _Atomic(uintptr_t) mi_arena_count; // = 0
/* -----------------------------------------------------------