refactor prof accum, so that tdata is not loaded if we aren't going to sample.

This commit is contained in:
Dave Watson 2018-10-09 11:07:24 -07:00
parent 9ed3bdc848
commit 0ac524308d

View File

@ -86,6 +86,14 @@ prof_sample_accum_update(tsd_t *tsd, size_t usize, bool update,
cassert(config_prof);
bytes_until_sample = tsd_bytes_until_sample_get(tsd);
if (likely(bytes_until_sample >= usize)) {
if (update && tsd_nominal(tsd)) {
tsd_bytes_until_sample_set(tsd, bytes_until_sample - usize);
}
return true;
}
tdata = prof_tdata_get(tsd, true);
if (unlikely((uintptr_t)tdata <= (uintptr_t)PROF_TDATA_STATE_MAX)) {
tdata = NULL;
@ -99,13 +107,6 @@ prof_sample_accum_update(tsd_t *tsd, size_t usize, bool update,
return true;
}
bytes_until_sample = tsd_bytes_until_sample_get(tsd);
if (likely(bytes_until_sample >= usize)) {
if (update && tsd_nominal(tsd)) {
tsd_bytes_until_sample_set(tsd, bytes_until_sample - usize);
}
return true;
} else {
if (tsd_reentrancy_level_get(tsd) > 0) {
return true;
}
@ -114,7 +115,6 @@ prof_sample_accum_update(tsd_t *tsd, size_t usize, bool update,
prof_sample_threshold_update(tdata);
}
return !tdata->active;
}
}
JEMALLOC_ALWAYS_INLINE prof_tctx_t *