diff options
Diffstat (limited to 'toolkit/components/perfmonitoring/nsPerformanceStats.cpp')
| -rw-r--r-- | toolkit/components/perfmonitoring/nsPerformanceStats.cpp | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/toolkit/components/perfmonitoring/nsPerformanceStats.cpp b/toolkit/components/perfmonitoring/nsPerformanceStats.cpp index 6c470356a..03e63a461 100644 --- a/toolkit/components/perfmonitoring/nsPerformanceStats.cpp +++ b/toolkit/components/perfmonitoring/nsPerformanceStats.cpp @@ -1310,8 +1310,12 @@ nsPerformanceStatsService::GetResources(uint64_t* userTime, void nsPerformanceStatsService::NotifyJankObservers(const mozilla::Vector<uint64_t>& aPreviousJankLevels) { - GroupVector alerts; - mPendingAlerts.swap(alerts); + + // The move operation is generally constant time, unless `mPendingAlerts.length()` is very small, in which case it's + // fast anyway. + GroupVector alerts(Move(mPendingAlerts)); + mPendingAlerts = GroupVector(); // Reconstruct after `Move`. + if (!mPendingAlertsCollector) { // We are shutting down. return; |