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Revert "Reduce number of allocations in AutoStopwatch"

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This reverts commit 3476c1d60ec29c5497123194acd7a9310b1023d2.
This commit is contained in:
wolfbeast 2019-01-29 00:40:24 +01:00 • committed by Roy Tam
commit dce38e8d76
4 changed files with 11 additions and 25 deletions
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8
toolkit/components/perfmonitoring/nsPerformanceStats.cpp
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@ -1310,12 +1310,8 @@ nsPerformanceStatsService::GetResources(uint64_t* userTime,
void
nsPerformanceStatsService::NotifyJankObservers(const mozilla::Vector<uint64_t>& aPreviousJankLevels) {
// 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`.
GroupVector alerts;
mPendingAlerts.swap(alerts);
if (!mPendingAlertsCollector) {
// We are shutting down.
return;

2
toolkit/components/perfmonitoring/nsPerformanceStats.h
View file

@ -19,7 +19,7 @@
class nsPerformanceGroup;
class nsPerformanceGroupDetails;
typedef mozilla::Vector<RefPtr<nsPerformanceGroup>, 8> GroupVector;
typedef mozilla::Vector<RefPtr<nsPerformanceGroup>> GroupVector;
/**
* A data structure for registering observers interested in