1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_SYSTEM_INFO_TRACKER_H_ 18 #define SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_SYSTEM_INFO_TRACKER_H_ 19 20 #include "perfetto/ext/base/optional.h" 21 #include "perfetto/ext/base/string_view.h" 22 #include "src/trace_processor/types/destructible.h" 23 #include "src/trace_processor/types/trace_processor_context.h" 24 #include "src/trace_processor/types/version_number.h" 25 26 namespace perfetto { 27 namespace trace_processor { 28 29 class SystemInfoTracker : public Destructible { 30 public: 31 ~SystemInfoTracker() override; 32 33 SystemInfoTracker(const SystemInfoTracker&) = delete; 34 SystemInfoTracker& operator=(const SystemInfoTracker&) = delete; 35 GetOrCreate(TraceProcessorContext * context)36 static SystemInfoTracker* GetOrCreate(TraceProcessorContext* context) { 37 if (!context->system_info_tracker) { 38 context->system_info_tracker.reset(new SystemInfoTracker(context)); 39 } 40 return static_cast<SystemInfoTracker*>(context->system_info_tracker.get()); 41 } 42 43 void SetKernelVersion(base::StringView name, base::StringView release); 44 GetKernelVersion()45 base::Optional<VersionNumber> GetKernelVersion() { return version_; } 46 47 private: 48 explicit SystemInfoTracker(TraceProcessorContext*); 49 50 base::Optional<VersionNumber> version_; 51 }; 52 } // namespace trace_processor 53 } // namespace perfetto 54 55 #endif // SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_SYSTEM_INFO_TRACKER_H_ 56