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wip: purgeable arenas, various fixes

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daanx 2023-04-03 17:58:28 -07:00
parent a9f42376b7
commit d22a13c990
5 changed files with 18 additions and 26 deletions
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14
src/arena.c
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@ -182,7 +182,7 @@ static mi_decl_noinline void* mi_arena_alloc_from(mi_arena_t* arena, size_t aren
if (any_uncommitted) {
bool commit_zero;
_mi_os_commit(p, needed_bcount * MI_ARENA_BLOCK_SIZE, &commit_zero, tld->stats);
if (commit_zero) *is_zero = true;
if (commit_zero) { *is_zero = true; }
}
}
else {
@ -190,7 +190,7 @@ static mi_decl_noinline void* mi_arena_alloc_from(mi_arena_t* arena, size_t aren
*commit = _mi_bitmap_is_claimed_across(arena->blocks_committed, arena->field_count, needed_bcount, bitmap_index);
}
mi_track_mem_undefined(p,needed_bcount*MI_ARENA_BLOCK_SIZE);
// mi_track_mem_undefined(p,needed_bcount*MI_ARENA_BLOCK_SIZE);
return p;
}
@ -297,7 +297,11 @@ void* _mi_arena_alloc_aligned(size_t size, size_t alignment, size_t align_offset
mi_atomic_load_relaxed(&mi_arena_count) < 3*(MI_MAX_ARENAS/4) ) // not too many arenas already?
{
mi_arena_id_t arena_id = 0;
const bool arena_commit = _mi_os_has_overcommit() || mi_option_is_enabled(mi_option_eager_arena_commit);
bool arena_commit = _mi_os_has_overcommit();
if (mi_option_get(mi_option_eager_arena_commit) == 1) { arena_commit = true; }
else if (mi_option_get(mi_option_eager_arena_commit) == 0) { arena_commit = false; }
if (mi_reserve_os_memory_ex(arena_reserve, arena_commit /* commit */, *large /* allow large*/, false /* exclusive */, &arena_id) == 0) {
p = mi_arena_alloc_in(arena_id, numa_node, size, alignment, commit, large, is_pinned, is_zero, req_arena_id, memid, tld);
if (p != NULL) return p;
@ -513,6 +517,9 @@ void _mi_arena_free(void* p, size_t size, size_t alignment, size_t align_offset,
return;
}
// need to set all memory to undefined as some parts may still be marked as no_access (like padding etc.)
mi_track_mem_undefined(p,size);
// potentially decommit
if (!arena->allow_decommit || arena->blocks_committed == NULL) {
mi_assert_internal(all_committed);
@ -523,6 +530,7 @@ void _mi_arena_free(void* p, size_t size, size_t alignment, size_t align_offset,
if (!all_committed) {
// assume the entire range as no longer committed
_mi_bitmap_unclaim_across(arena->blocks_committed, arena->field_count, blocks, bitmap_idx);
mi_track_mem_noaccess(p,size);
}
// (delay) purge the entire range
mi_arena_schedule_purge(arena, bitmap_idx, blocks, stats);