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Extent refactor: Introduce ecache module.

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This will eventually completely wrap the eset, and handle concurrency,
allocation, and deallocation.  For now, we only pull out the mutex from the
eset.
This commit is contained in:
David Goldblatt 2019-12-12 16:25:24 -08:00 • committed by David Goldblatt
parent 0704516245
commit bb70df8e5b
15 changed files with 354 additions and 295 deletions
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12
src/background_thread.c
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@ -114,7 +114,7 @@ decay_npurge_after_interval(arena_decay_t *decay, size_t interval) {
static uint64_t
arena_decay_compute_purge_interval_impl(tsdn_t *tsdn, arena_decay_t *decay,
eset_t *eset) {
ecache_t *ecache) {
if (malloc_mutex_trylock(tsdn, &decay->mtx)) {
/* Use minimal interval if decay is contended. */
return BACKGROUND_THREAD_MIN_INTERVAL_NS;
@ -130,7 +130,7 @@ arena_decay_compute_purge_interval_impl(tsdn_t *tsdn, arena_decay_t *decay,
uint64_t decay_interval_ns = nstime_ns(&decay->interval);
assert(decay_interval_ns > 0);
size_t npages = eset_npages_get(eset);
size_t npages = ecache_npages_get(ecache);
if (npages == 0) {
unsigned i;
for (i = 0; i < SMOOTHSTEP_NSTEPS; i++) {
@ -202,12 +202,12 @@ static uint64_t
arena_decay_compute_purge_interval(tsdn_t *tsdn, arena_t *arena) {
uint64_t i1, i2;
i1 = arena_decay_compute_purge_interval_impl(tsdn, &arena->decay_dirty,
&arena->eset_dirty);
&arena->ecache_dirty);
if (i1 == BACKGROUND_THREAD_MIN_INTERVAL_NS) {
return i1;
}
i2 = arena_decay_compute_purge_interval_impl(tsdn, &arena->decay_muzzy,
&arena->eset_muzzy);
&arena->ecache_muzzy);
return i1 < i2 ? i1 : i2;
}
@ -717,8 +717,8 @@ background_thread_interval_check(tsdn_t *tsdn, arena_t *arena,
if (info->npages_to_purge_new > BACKGROUND_THREAD_NPAGES_THRESHOLD) {
should_signal = true;
} else if (unlikely(background_thread_indefinite_sleep(info)) &&
(eset_npages_get(&arena->eset_dirty) > 0 ||
eset_npages_get(&arena->eset_muzzy) > 0 ||
(ecache_npages_get(&arena->ecache_dirty) > 0 ||
ecache_npages_get(&arena->ecache_muzzy) > 0 ||
info->npages_to_purge_new > 0)) {
should_signal = true;
} else {