perf_hooks: reset prev_ before starting ELD timer

reset `ELDHistogram.prev_` before staring timer to ensure that start timer doesn't leak across `disable()` `enable()` calls. PR-URL: #26693 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Yongsheng Zhang <[email protected]>
nodejs · Mar 27, 2019 · 0bd82c9 · 0bd82c9
1 parent 8de9fe9
commit 0bd82c9
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/node_perf.cc b/src/node_perf.cc
@@ -539,6 +539,7 @@ bool ELDHistogram::RecordDelta() {
 bool ELDHistogram::Enable() {
   if (enabled_) return false;
   enabled_ = true;
+  prev_ = 0;
   uv_timer_start(timer_,
                  ELDHistogramDelayInterval,
                  resolution_,