32     int id = AssignId(key);  in Start()  local
33     ValidateDuplication(id);  in Start()
34     impl->Start(userId, id, timeoutPeriod);  in Start()
35     sessions.push_back(id);  in Start()
41     int id = KeyToId(key);  in Stop()  local
42     ValidateExistence(id);  in Stop()
43     impl->Stop(userId, id);  in Stop()
44     sessions.erase(std::find(sessions.begin(), sessions.end(), id));  in Stop()
45     RecycleId(id);  in Stop()
48 void AppTimerAdapter::Expired(int id)  in Expired()  argument
51     std::string key = IdToKey(id);  in Expired()
55     sessions.erase(std::find(sessions.begin(), sessions.end(), id));  in Expired()
56     RecycleId(id);  in Expired()
64 void AppTimerAdapter::ValidateDuplication(const int id)  in ValidateDuplication()  argument
66     if (std::find(sessions.begin(), sessions.end(), id) != sessions.end()) {  in ValidateDuplication()
67         throw std::invalid_argument("duplicated id");  in ValidateDuplication()
71 void AppTimerAdapter::ValidateExistence(const int id)  in ValidateExistence()  argument
73     if (std::find(sessions.begin(), sessions.end(), id) == sessions.end()) {  in ValidateExistence()
74         throw std::invalid_argument("non-existing id");  in ValidateExistence()
85     int id = ids.back();  in AssignId()  local
87     idToBundle[id] = key;  in AssignId()
88     bundleToId[key] = id;  in AssignId()
89     return id;  in AssignId()
92 void AppTimerAdapter::RecycleId(const int id)  in RecycleId()  argument
94     std::string bundle = idToBundle[id];  in RecycleId()
96     idToBundle.erase(id);  in RecycleId()
97     ids.push_back(id);  in RecycleId()
100 std::string AppTimerAdapter::IdToKey(const int id)  in IdToKey()  argument
102     if (idToBundle.find(id) != idToBundle.end()) {  in IdToKey()
103         return idToBundle[id];  in IdToKey()