lihao/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-07-23 21:23:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

PAC: Move in decay rate setting.

Browse Source
This commit is contained in:
David Goldblatt
2020-06-03 18:30:33 -07:00
committed by David Goldblatt
parent 6a2774719f
commit 471eb5913c
9 changed files with 126 additions and 149 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
src/pa.c
View File

@@ -78,9 +78,9 @@ pa_shard_destroy_retained(tsdn_t *tsdn, pa_shard_t *shard) {
}
}
static bool
static inline bool
pa_shard_may_have_muzzy(pa_shard_t *shard) {
return pac_muzzy_decay_ms_get(&shard->pac) != 0;
return pac_decay_ms_get(&shard->pac, extent_state_muzzy) != 0;
}
static edata_t *
@@ -389,60 +389,20 @@ pa_decay_all(tsdn_t *tsdn, pa_shard_t *shard, decay_t *decay,
/* npages_limit */ 0, ecache_npages_get(ecache));
}
static void
pa_decay_try_purge(tsdn_t *tsdn, pa_shard_t *shard, decay_t *decay,
pac_decay_stats_t *decay_stats, ecache_t *ecache,
size_t current_npages, size_t npages_limit) {
if (current_npages > npages_limit) {
pa_decay_to_limit(tsdn, shard, decay, decay_stats, ecache,
/* fully_decay */ false, npages_limit,
current_npages - npages_limit);
}
}
bool
pa_maybe_decay_purge(tsdn_t *tsdn, pa_shard_t *shard, decay_t *decay,
pac_decay_stats_t *decay_stats, ecache_t *ecache,
pac_decay_purge_setting_t decay_purge_setting) {
malloc_mutex_assert_owner(tsdn, &decay->mtx);
/* Purge all or nothing if the option is disabled. */
ssize_t decay_ms = decay_ms_read(decay);
if (decay_ms <= 0) {
if (decay_ms == 0) {
pa_decay_to_limit(tsdn, shard, decay, decay_stats,
ecache, /* fully_decay */ false,
/* npages_limit */ 0, ecache_npages_get(ecache));
}
return false;
}
/*
* If the deadline has been reached, advance to the current epoch and
* purge to the new limit if necessary. Note that dirty pages created
* during the current epoch are not subject to purge until a future
* epoch, so as a result purging only happens during epoch advances, or
* being triggered by background threads (scheduled event).
*/
nstime_t time;
nstime_init_update(&time);
size_t npages_current = ecache_npages_get(ecache);
bool epoch_advanced = decay_maybe_advance_epoch(decay, &time,
npages_current);
if (decay_purge_setting == PAC_DECAY_PURGE_ALWAYS
|| (epoch_advanced && decay_purge_setting
== PAC_DECAY_PURGE_ON_EPOCH_ADVANCE)) {
size_t npages_limit = decay_npages_limit_get(decay);
pa_decay_try_purge(tsdn, shard, decay, decay_stats, ecache,
npages_current, npages_limit);
}
return epoch_advanced;
}
bool
pa_shard_retain_grow_limit_get_set(tsdn_t *tsdn, pa_shard_t *shard,
size_t *old_limit, size_t *new_limit) {
return pac_retain_grow_limit_get_set(tsdn, &shard->pac, old_limit,
new_limit);
}
bool
pa_decay_ms_set(tsdn_t *tsdn, pa_shard_t *shard, extent_state_t state,
ssize_t decay_ms, pac_purge_eagerness_t eagerness) {
return pac_decay_ms_set(tsdn, &shard->pac, state, decay_ms, eagerness);
}
ssize_t
pa_decay_ms_get(pa_shard_t *shard, extent_state_t state) {
return pac_decay_ms_get(&shard->pac, state);
}