romenskiy2012/jemalloc
1
0
Fork 0
mirror of https://github.com/jemalloc/jemalloc.git synced 2026-08-26 09:03:33 +03:00
Code Issues Projects Releases Packages Wiki Activity

PA: Make mapped stat atomic.

Browse source 
We always have atomic_zu_t, and mapped/unmapped transitions are always expensive
enough that trying to piggyback on a lock is a waste of time.
This commit is contained in:
David Goldblatt 2020-03-11 18:37:15 -07:00 • committed by David Goldblatt
parent 3c28aa6f17
commit 436789ad96
6 changed files with 22 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

11
src/ctl.c
View file

@ -861,7 +861,7 @@ ctl_arena_stats_sdmerge(ctl_arena_t *ctl_sdarena, ctl_arena_t *ctl_arena,
ctl_arena_stats_t *astats = ctl_arena->astats;
if (!destroyed) {
ctl_accum_locked_zu(
ctl_accum_atomic_zu(
&sdstats->astats.pa_shard_stats.mapped,
&astats->astats.pa_shard_stats.mapped);
ctl_accum_locked_zu(&sdstats->astats.retained,
@ -1101,8 +1101,9 @@ ctl_refresh(tsdn_t *tsdn) {
&ctl_sarena->astats->astats.metadata_thp, ATOMIC_RELAXED);
ctl_stats->resident = atomic_load_zu(
&ctl_sarena->astats->astats.resident, ATOMIC_RELAXED);
ctl_stats->mapped = locked_read_atomic_zu(
&ctl_sarena->astats->astats.pa_shard_stats.mapped);
ctl_stats->mapped = atomic_load_zu(
&ctl_sarena->astats->astats.pa_shard_stats.mapped,
ATOMIC_RELAXED);
ctl_stats->retained = locked_read_atomic_zu(
&ctl_sarena->astats->astats.retained);
@ -2913,8 +2914,8 @@ CTL_RO_GEN(stats_arenas_i_pactive, arenas_i(mib[2])->pactive, size_t)
CTL_RO_GEN(stats_arenas_i_pdirty, arenas_i(mib[2])->pdirty, size_t)
CTL_RO_GEN(stats_arenas_i_pmuzzy, arenas_i(mib[2])->pmuzzy, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_mapped,
locked_read_atomic_zu(&arenas_i(
mib[2])->astats->astats.pa_shard_stats.mapped), size_t)
atomic_load_zu(&arenas_i(mib[2])->astats->astats.pa_shard_stats.mapped,
ATOMIC_RELAXED), size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_retained,
locked_read_atomic_zu(&arenas_i(mib[2])->astats->astats.retained),
size_t)