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Refactor and optimize prof sampling initialization.

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Makes the prof sample prng use the tsd prng_state.  This allows us to properly
initialize the sample interval event, without having to create tdata.  As a
result, tdata will be created on demand (when a thread reaches the sample
interval bytes allocated), instead of on the first allocation.
This commit is contained in:
Qi Wang 2019-11-04 17:22:25 -08:00 • committed by Qi Wang
parent bc774a3519
commit da50d8ce87
7 changed files with 16 additions and 59 deletions
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2
src/thread_event.c
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@ -34,7 +34,7 @@ tsd_thread_tcache_gc_event_init(tsd_t *tsd) {
static void
tsd_thread_prof_sample_event_init(tsd_t *tsd) {
assert(config_prof && opt_prof);
/* Do not set sample interval until the first allocation. */
prof_sample_threshold_update(tsd);
}
static void