+
+class Name2PairMap {
+ StringMap<std::pair<TimerGroup*, Name2TimerMap> > Map;
+public:
+ ~Name2PairMap() {
+ for (StringMap<std::pair<TimerGroup*, Name2TimerMap> >::iterator
+ I = Map.begin(), E = Map.end(); I != E; ++I)
+ delete I->second.first;
+ }
+
+ Timer &get(StringRef Name, StringRef GroupName) {
+ sys::SmartScopedLock<true> L(*TimerLock);
+
+ std::pair<TimerGroup*, Name2TimerMap> &GroupEntry = Map[GroupName];
+
+ if (!GroupEntry.first)
+ GroupEntry.first = new TimerGroup(GroupName);
+
+ Timer &T = GroupEntry.second[Name];
+ if (!T.isInitialized())
+ T.init(Name, *GroupEntry.first);
+ return T;
+ }
+};
+
+}