| /* |
| * Copyright (C) 2016 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 CAR_PROCESS_MONITOR_H_ |
| #define CAR_PROCESS_MONITOR_H_ |
| |
| #include <map> |
| #include <memory> |
| #include <set> |
| #include <string> |
| #include <shared_mutex> |
| |
| #include <inttypes.h> |
| #include <cutils/compiler.h> |
| |
| #include <binder/BinderService.h> |
| #include <binder/IBinder.h> |
| #include <utils/String8.h> |
| |
| #include <IVehicleMonitor.h> |
| #include <HandlerThread.h> |
| |
| namespace android { |
| |
| // ---------------------------------------------------------------------------- |
| struct ProcInfo { |
| pid_t pid; |
| uid_t uid; |
| std::string name; |
| uint64_t utime; |
| uint64_t stime; |
| uint64_t rss; |
| uint64_t wbytes; |
| int64_t delta_utime; |
| int64_t delta_stime; |
| int64_t delta_time; |
| int64_t delta_rss; |
| int64_t delta_wbytes; |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| // This class is used to collect information about running processes. |
| // It also enforces certain policies to running apps - ex. kills non-system, |
| // non-foreground applications that use too much memory, CPU, or write too much |
| // data to disk. |
| class ProcessMonitor { |
| public: |
| ProcessMonitor(); |
| ~ProcessMonitor(); |
| |
| void dump(String8& msg); |
| status_t setAppPriority(uint32_t pid, uint32_t uid, uint32_t priority); |
| status_t process(); |
| |
| private: |
| status_t updateProcessInfo(); |
| void populateExistingPids(std::set<pid_t>& pidSet); |
| void deleteOutdatedPids(std::set<pid_t>& pidSet); |
| void updateOrAddProcess(pid_t pid); |
| void readStat(std::shared_ptr<ProcInfo> pidData, pid_t pid); |
| void readIo(std::shared_ptr<ProcInfo> pidData, pid_t pid); |
| void readCmdline(std::shared_ptr<ProcInfo> pidData, pid_t pid); |
| void readStatus(std::shared_ptr<ProcInfo> pidData, pid_t pid); |
| void updateDiffs(std::shared_ptr<ProcInfo> pidData, |
| std::shared_ptr<ProcInfo> oldPidData); |
| status_t improveSystemHealth(); |
| void dumpTopProcesses(String8& msg, |
| bool (*procCmpFn) ( |
| const std::pair<pid_t, const std::shared_ptr<ProcInfo>>, |
| const std::pair<pid_t, const std::shared_ptr<ProcInfo>>)); |
| |
| |
| private: |
| std::map<pid_t, std::shared_ptr<ProcInfo>> mProcInfoMap; |
| bool mIoSupported; |
| mutable std::shared_timed_mutex mMutex; |
| }; |
| |
| } |
| |
| #endif /* CAR_PROCESS_MONITOR_H_ */ |