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initial api for heaps restricted to a certain arena

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This commit is contained in:
daan
2022-11-01 16:22:51 -07:00
parent e961ef705e
commit 9f36808a7f
11 changed files with 109 additions and 40 deletions
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14
src/segment-cache.c
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@@ -39,8 +39,13 @@ static mi_decl_cache_align mi_bitmap_field_t cache_available[MI_CACHE_FIELDS] =
static mi_decl_cache_align mi_bitmap_field_t cache_available_large[MI_CACHE_FIELDS] = { MI_CACHE_BITS_SET };
static mi_decl_cache_align mi_bitmap_field_t cache_inuse[MI_CACHE_FIELDS]; // zero bit = free
static bool mi_cdecl mi_segment_cache_is_suitable(mi_bitmap_index_t bitidx, void* arg) {
mi_arena_id_t req_arena_id = *((mi_arena_id_t*)arg);
mi_cache_slot_t* slot = &cache[mi_bitmap_index_bit(bitidx)];
return _mi_arena_memid_is_suitable(slot->memid, req_arena_id);
}
mi_decl_noinline void* _mi_segment_cache_pop(size_t size, mi_commit_mask_t* commit_mask, mi_commit_mask_t* decommit_mask, bool* large, bool* is_pinned, bool* is_zero, size_t* memid, mi_os_tld_t* tld)
mi_decl_noinline void* _mi_segment_cache_pop(size_t size, mi_commit_mask_t* commit_mask, mi_commit_mask_t* decommit_mask, bool* large, bool* is_pinned, bool* is_zero, mi_arena_id_t _req_arena_id, size_t* memid, mi_os_tld_t* tld)
{
#ifdef MI_CACHE_DISABLE
return NULL;
@@ -60,12 +65,15 @@ mi_decl_noinline void* _mi_segment_cache_pop(size_t size, mi_commit_mask_t* comm
// find an available slot
mi_bitmap_index_t bitidx = 0;
bool claimed = false;
mi_arena_id_t req_arena_id = _req_arena_id;
mi_bitmap_pred_fun_t pred_fun = &mi_segment_cache_is_suitable; // cannot pass NULL as the arena may be exclusive itself; todo: do not put exclusive arenas in the cache?
if (*large) { // large allowed?
claimed = _mi_bitmap_try_find_from_claim(cache_available_large, MI_CACHE_FIELDS, start_field, 1, &bitidx);
claimed = _mi_bitmap_try_find_from_claim_pred(cache_available_large, MI_CACHE_FIELDS, start_field, 1, pred_fun, &req_arena_id, &bitidx);
if (claimed) *large = true;
}
if (!claimed) {
claimed = _mi_bitmap_try_find_from_claim(cache_available, MI_CACHE_FIELDS, start_field, 1, &bitidx);
claimed = _mi_bitmap_try_find_from_claim_pred (cache_available, MI_CACHE_FIELDS, start_field, 1, pred_fun, &req_arena_id, &bitidx);
if (claimed) *large = false;
}