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Move background thread state operations into background thread modules.

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Move operations touch background thread's lifecycle and states back into
its own module.
This commit is contained in:
guangli-dai 2026-06-28 15:19:47 -07:00 • committed by Guangli Dai
parent 01df5c96e0
commit f1f0792370
5 changed files with 97 additions and 49 deletions
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16
src/arena.c
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@ -1427,17 +1427,17 @@ arena_get_ehooks(const arena_t *arena) {
extent_hooks_t *
arena_set_extent_hooks(
tsd_t *tsd, arena_t *arena, extent_hooks_t *extent_hooks) {
background_thread_info_t *info;
if (have_background_thread) {
info = arena_background_thread_info_get(arena);
malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
}
/*
* Serialize disabling the HPA against the background thread via the
* module-owned bracket (have_background_thread-gated internally) rather
* than reaching into info->mtx directly.
*/
unsigned arena_ind = arena_ind_get(arena);
background_thread_serialize_lock(tsd, arena_ind);
/* No using the HPA now that we have the custom hooks. */
pa_shard_disable_hpa(tsd_tsdn(tsd), &arena->pa_shard);
extent_hooks_t *ret = base_extent_hooks_set(arena->base, extent_hooks);
if (have_background_thread) {
malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
}
background_thread_serialize_unlock(tsd, arena_ind);
return ret;
}