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Remove generic experimental hooks

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This commit is contained in:
Slobodan Predolac 2026-05-12 15:34:09 -07:00
parent 3f9d8ca3d0
commit ff2c2548a3
20 changed files with 25 additions and 1636 deletions
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52
src/tsd.c
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@ -63,9 +63,6 @@ typedef ql_head(tsd_t) tsd_list_t;
static tsd_list_t tsd_nominal_tsds = ql_head_initializer(tsd_nominal_tsds);
static malloc_mutex_t tsd_nominal_tsds_lock;
/* How many slow-path-enabling features are turned on. */
static atomic_u32_t tsd_global_slow_count = ATOMIC_INIT(0);
static bool
tsd_in_nominal_list(tsd_t *tsd) {
tsd_t *tsd_list;
@ -104,59 +101,12 @@ tsd_remove_nominal(tsd_t *tsd) {
malloc_mutex_unlock(tsd_tsdn(tsd), &tsd_nominal_tsds_lock);
}
static void
tsd_force_recompute(tsdn_t *tsdn) {
/*
* The stores to tsd->state here need to synchronize with the exchange
* in tsd_slow_update.
*/
atomic_fence(ATOMIC_RELEASE);
malloc_mutex_lock(tsdn, &tsd_nominal_tsds_lock);
tsd_t *remote_tsd;
ql_foreach (remote_tsd, &tsd_nominal_tsds, TSD_MANGLE(tsd_link)) {
assert(tsd_atomic_load(&remote_tsd->state, ATOMIC_RELAXED)
<= tsd_state_nominal_max);
tsd_atomic_store(&remote_tsd->state,
tsd_state_nominal_recompute, ATOMIC_RELAXED);
/* See comments in te_recompute_fast_threshold(). */
atomic_fence(ATOMIC_SEQ_CST);
te_next_event_fast_set_non_nominal(remote_tsd);
}
malloc_mutex_unlock(tsdn, &tsd_nominal_tsds_lock);
}
void
tsd_global_slow_inc(tsdn_t *tsdn) {
atomic_fetch_add_u32(&tsd_global_slow_count, 1, ATOMIC_RELAXED);
/*
* We unconditionally force a recompute, even if the global slow count
* was already positive. If we didn't, then it would be possible for us
* to return to the user, have the user synchronize externally with some
* other thread, and then have that other thread not have picked up the
* update yet (since the original incrementing thread might still be
* making its way through the tsd list).
*/
tsd_force_recompute(tsdn);
}
void
tsd_global_slow_dec(tsdn_t *tsdn) {
atomic_fetch_sub_u32(&tsd_global_slow_count, 1, ATOMIC_RELAXED);
/* See the note in ..._inc(). */
tsd_force_recompute(tsdn);
}
static bool
tsd_local_slow(tsd_t *tsd) {
return !tsd_tcache_enabled_get(tsd)
|| tsd_reentrancy_level_get(tsd) > 0;
}
bool
tsd_global_slow(void) {
return atomic_load_u32(&tsd_global_slow_count, ATOMIC_RELAXED) > 0;
}
/******************************************************************************/
static uint8_t
@ -165,7 +115,7 @@ tsd_state_compute(tsd_t *tsd) {
return tsd_state_get(tsd);
}
/* We're in *a* nominal state; but which one? */
if (malloc_slow || tsd_local_slow(tsd) || tsd_global_slow()) {
if (malloc_slow || tsd_local_slow(tsd)) {
return tsd_state_nominal_slow;
} else {
return tsd_state_nominal;