86   std::mutex mutex;  in ReadTraceBlocking()  local
91   ReadTrace([&mutex, &raw_trace, &all_read, &cv](ReadTraceCallbackArgs cb) {  in ReadTraceBlocking()
93     std::unique_lock<std::mutex> lock(mutex);  in ReadTraceBlocking()
100     std::unique_lock<std::mutex> lock(mutex);  in ReadTraceBlocking()
108   std::mutex mutex;  in GetTraceStatsBlocking()  local
114       [&mutex, &result, &stats_read, &cv](GetTraceStatsCallbackArgs args) {  in GetTraceStatsBlocking()
116         std::unique_lock<std::mutex> lock(mutex);  in GetTraceStatsBlocking()
122     std::unique_lock<std::mutex> lock(mutex);  in GetTraceStatsBlocking()
130   std::mutex mutex;  in QueryServiceStateBlocking()  local
136       [&mutex, &result, &status_read, &cv](QueryServiceStateCallbackArgs args) {  in QueryServiceStateBlocking()
138         std::unique_lock<std::mutex> lock(mutex);  in QueryServiceStateBlocking()
144     std::unique_lock<std::mutex> lock(mutex);  in QueryServiceStateBlocking()