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 <optional> 21 22 #include "perfetto/ext/base/string_view.h" 23 #include "src/trace_processor/types/destructible.h" 24 #include "src/trace_processor/types/trace_processor_context.h" 25 #include "src/trace_processor/types/version_number.h" 26 27 namespace perfetto { 28 namespace trace_processor { 29 30 class SystemInfoTracker : public Destructible { 31 public: 32 ~SystemInfoTracker() override; 33 34 SystemInfoTracker(const SystemInfoTracker&) = delete; 35 SystemInfoTracker& operator=(const SystemInfoTracker&) = delete; 36 GetOrCreate(TraceProcessorContext * context)37 static SystemInfoTracker* GetOrCreate(TraceProcessorContext* context) { 38 if (!context->system_info_tracker) { 39 context->system_info_tracker.reset(new SystemInfoTracker()); 40 } 41 return static_cast<SystemInfoTracker*>(context->system_info_tracker.get()); 42 } 43 44 void SetKernelVersion(base::StringView name, base::StringView release); SetNumCpus(uint32_t num_cpus)45 void SetNumCpus(uint32_t num_cpus) { num_cpus_ = num_cpus; } 46 GetKernelVersion()47 std::optional<VersionNumber> GetKernelVersion() const { return version_; } GetNumCpus()48 std::optional<uint32_t> GetNumCpus() const { return num_cpus_; } 49 50 private: 51 explicit SystemInfoTracker(); 52 53 std::optional<VersionNumber> version_; 54 std::optional<uint32_t> num_cpus_; 55 }; 56 } // namespace trace_processor 57 } // namespace perfetto 58 59 #endif // SRC_TRACE_PROCESSOR_IMPORTERS_COMMON_SYSTEM_INFO_TRACKER_H_ 60