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keep threadid 0 for abandoned_next to preserve invariants

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daanx
2024-03-02 18:24:53 -08:00
parent 70e3ce07d1
commit 43d40704b9
2 changed files with 6 additions and 2 deletions
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4
src/segment.c
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@@ -845,7 +845,9 @@ static bool mi_segment_check_free(mi_segment_t* segment, size_t block_size, bool
// set `right_page_reclaimed` to `true` if it reclaimed a page of the right `block_size` that was not full.
static mi_segment_t* mi_segment_reclaim(mi_segment_t* segment, mi_heap_t* heap, size_t requested_block_size, bool* right_page_reclaimed, mi_segments_tld_t* tld) {
if (right_page_reclaimed != NULL) { *right_page_reclaimed = false; }
mi_assert_internal(mi_atomic_load_relaxed(&segment->thread_id) == _mi_thread_id());
// can be 0 still with abandoned_next, or already a thread id for segments outside an arena that are reclaimed on a free.
mi_assert_internal(mi_atomic_load_relaxed(&segment->thread_id) == 0 || mi_atomic_load_relaxed(&segment->thread_id) == _mi_thread_id());
mi_atomic_store_release(&segment->thread_id, _mi_thread_id());
segment->abandoned_visits = 0;
mi_segments_track_size((long)segment->segment_size, tld);
mi_assert_internal(segment->next == NULL && segment->prev == NULL);