| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef SRC_TRACED_PROBES_SYS_STATS_SYS_STATS_DATA_SOURCE_H_ |
| #define SRC_TRACED_PROBES_SYS_STATS_SYS_STATS_DATA_SOURCE_H_ |
| |
| #include <string.h> |
| |
| #include <map> |
| #include <memory> |
| #include <string> |
| |
| #include "perfetto/ext/base/paged_memory.h" |
| #include "perfetto/ext/base/scoped_file.h" |
| #include "perfetto/ext/base/weak_ptr.h" |
| #include "perfetto/ext/tracing/core/basic_types.h" |
| #include "perfetto/ext/tracing/core/trace_writer.h" |
| #include "perfetto/tracing/core/data_source_config.h" |
| #include "src/traced/probes/common/cpu_freq_info.h" |
| #include "src/traced/probes/probes_data_source.h" |
| |
| namespace perfetto { |
| |
| namespace base { |
| class TaskRunner; |
| } |
| |
| namespace protos { |
| namespace pbzero { |
| class SysStats; |
| } |
| } // namespace protos |
| |
| class SysStatsDataSource : public ProbesDataSource { |
| public: |
| static const ProbesDataSource::Descriptor descriptor; |
| |
| using OpenFunction = base::ScopedFile (*)(const char*); |
| SysStatsDataSource(base::TaskRunner*, |
| TracingSessionID, |
| std::unique_ptr<TraceWriter> writer, |
| const DataSourceConfig&, |
| std::unique_ptr<CpuFreqInfo> cpu_freq_info, |
| OpenFunction = nullptr); |
| ~SysStatsDataSource() override; |
| |
| // ProbesDataSource implementation. |
| void Start() override; |
| void Flush(FlushRequestID, std::function<void()> callback) override; |
| |
| base::WeakPtr<SysStatsDataSource> GetWeakPtr() const; |
| |
| void set_ns_per_user_hz_for_testing(uint64_t ns) { ns_per_user_hz_ = ns; } |
| uint32_t tick_for_testing() const { return tick_; } |
| |
| // Virtual for testing |
| virtual base::ScopedDir OpenDevfreqDir(); |
| virtual const char* ReadDevfreqCurFreq(const std::string& name); |
| |
| private: |
| struct CStrCmp { |
| bool operator()(const char* a, const char* b) const { |
| return strcmp(a, b) < 0; |
| } |
| }; |
| |
| static void Tick(base::WeakPtr<SysStatsDataSource>); |
| |
| SysStatsDataSource(const SysStatsDataSource&) = delete; |
| SysStatsDataSource& operator=(const SysStatsDataSource&) = delete; |
| void ReadSysStats(); // Virtual for testing. |
| void ReadMeminfo(protos::pbzero::SysStats* sys_stats); |
| void ReadVmstat(protos::pbzero::SysStats* sys_stats); |
| void ReadStat(protos::pbzero::SysStats* sys_stats); |
| void ReadDevfreq(protos::pbzero::SysStats* sys_stats); |
| void ReadCpufreq(protos::pbzero::SysStats* sys_stats); |
| void ReadBuddyInfo(protos::pbzero::SysStats* sys_stats); |
| void ReadDiskStat(protos::pbzero::SysStats* sys_stats); |
| size_t ReadFile(base::ScopedFile*, const char* path); |
| |
| base::TaskRunner* const task_runner_; |
| std::unique_ptr<TraceWriter> writer_; |
| base::ScopedFile meminfo_fd_; |
| base::ScopedFile vmstat_fd_; |
| base::ScopedFile stat_fd_; |
| base::ScopedFile buddy_fd_; |
| base::ScopedFile diskstat_fd_; |
| base::PagedMemory read_buf_; |
| TraceWriter::TracePacketHandle cur_packet_; |
| std::map<const char*, int, CStrCmp> meminfo_counters_; |
| std::map<const char*, int, CStrCmp> vmstat_counters_; |
| uint64_t ns_per_user_hz_ = 0; |
| uint32_t tick_ = 0; |
| uint32_t tick_period_ms_ = 0; |
| uint32_t meminfo_ticks_ = 0; |
| uint32_t vmstat_ticks_ = 0; |
| uint32_t stat_ticks_ = 0; |
| uint32_t stat_enabled_fields_ = 0; |
| uint32_t devfreq_ticks_ = 0; |
| uint32_t cpufreq_ticks_ = 0; |
| uint32_t buddyinfo_ticks_ = 0; |
| uint32_t diskstat_ticks_ = 0; |
| bool devfreq_error_logged_ = false; |
| |
| std::unique_ptr<CpuFreqInfo> cpu_freq_info_; |
| |
| base::WeakPtrFactory<SysStatsDataSource> weak_factory_; // Keep last. |
| }; |
| |
| } // namespace perfetto |
| |
| #endif // SRC_TRACED_PROBES_SYS_STATS_SYS_STATS_DATA_SOURCE_H_ |