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Unlike prof_sample which is supported only with profiling mode active, prof_threshold is intended to be an always-supported allocation callback with much less overhead. The usage of the threshold allows performance critical callers to change program execution based on the callback: e.g. drop caches when memory becomes high or to predict the program is about to OOM ahead of time using peak memory watermarks.

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This commit is contained in:
Shai Duvdevani
2025-01-29 15:25:10 -08:00
committed by Qi Wang
parent ef8e512e29
commit 257e64b968
22 changed files with 246 additions and 0 deletions
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5
src/thread_event.c
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@@ -69,6 +69,11 @@ peak_dalloc_fetch_elapsed(tsd_t *tsd) {
return TE_INVALID_ELAPSED;
}
static uint64_t
prof_threshold_fetch_elapsed(tsd_t *tsd) {
return TE_INVALID_ELAPSED;
}
/* Per event facilities done. */
static bool