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Allow PAI to calculate time until deferred work

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Previously the calculation of sleep time between wakeups was implemented within
background_thread. This resulted in some parts of decay and hpa specific
logic mixing with background thread implementation. In this change, background
thread delegates this calculation to arena and it, in turn, delegates it to PAI.
The next step is to implement the actual calculation of time until deferred work
in HPA.
This commit is contained in:
Alex Lapenkou
2021-08-06 14:53:05 -07:00
committed by Alexander Lapenkov
parent 26140dd246
commit b8b8027f19
14 changed files with 298 additions and 169 deletions
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7
src/pac.c
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@@ -10,6 +10,7 @@ static bool pac_expand_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata,
static bool pac_shrink_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata,
size_t old_size, size_t new_size);
static void pac_dalloc_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata);
static uint64_t pac_time_until_deferred_work(tsdn_t *tsdn, pai_t *self);
static ehooks_t *
pac_ehooks_get(pac_t *pac) {
@@ -96,6 +97,7 @@ pac_init(tsdn_t *tsdn, pac_t *pac, base_t *base, emap_t *emap,
pac->pai.shrink = &pac_shrink_impl;
pac->pai.dalloc = &pac_dalloc_impl;
pac->pai.dalloc_batch = &pai_dalloc_batch_default;
pac->pai.time_until_deferred_work = &pac_time_until_deferred_work;
return false;
}
@@ -196,6 +198,11 @@ pac_dalloc_impl(tsdn_t *tsdn, pai_t *self, edata_t *edata) {
ecache_dalloc(tsdn, pac, ehooks, &pac->ecache_dirty, edata);
}
static uint64_t
pac_time_until_deferred_work(tsdn_t *tsdn, pai_t *self) {
return BACKGROUND_THREAD_DEFERRED_MAX;
}
bool
pac_retain_grow_limit_get_set(tsdn_t *tsdn, pac_t *pac, size_t *old_limit,
size_t *new_limit) {