| // Copyright 2010-2014, Google Inc. |
| // All rights reserved. |
| // |
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| // this software without specific prior written permission. |
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| |
| // Session WatchDog timer |
| |
| #ifndef MOZC_SESSION_SESSION_WATCH_DOG_H_ |
| #define MOZC_SESSION_SESSION_WATCH_DOG_H_ |
| |
| #include "base/port.h" |
| #include "base/scoped_ptr.h" |
| #include "base/thread.h" |
| |
| namespace mozc { |
| class CPUStatsInterface; |
| class UnnamedEvent; |
| namespace client { |
| class ClientInterface; |
| } |
| |
| // SessionWatchDog class sends Cleanup command to Sessionhandler |
| // for every some specified seconds. |
| class SessionWatchDog : public Thread { |
| public: |
| // return the interval sec of watch dog timer |
| int32 interval() const { |
| return interval_sec_; |
| } |
| |
| // Set client interface. This method doesn't take the owership. |
| // mainly for unittesting. |
| void SetClientInterface(client::ClientInterface *client); |
| |
| // Set CPUStats interface. This method doesn't take the owership. |
| // mainly for unittesting. |
| void SetCPUStatsInterface(CPUStatsInterface *cpu_stats); |
| |
| explicit SessionWatchDog(int32 interval_sec); |
| virtual ~SessionWatchDog(); |
| |
| // inherited from Thread class |
| void Terminate(); |
| |
| // inherited from Thread class |
| // start watch dog timer and return immediately |
| // virtual void Start(); |
| |
| |
| // return true if watch dog can send CleanupCommand: |
| // |cpu_loads|: An array of cpu loads. |
| // |cpu_load_index|: the size of cpu loads |
| // |last_cleanup_time|: the last UTC time cleanup is executed |
| // TODO(taku): want to define it inside private with FRIEND_TEST |
| bool CanSendCleanupCommand(const volatile float *cpu_loads, |
| int cpu_load_index, |
| uint64 current_time, |
| uint64 last_cleanup_time) const; |
| |
| private: |
| virtual void Run(); |
| |
| int32 interval_sec_; |
| client::ClientInterface *client_; |
| CPUStatsInterface *cpu_stats_; |
| scoped_ptr<UnnamedEvent> event_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SessionWatchDog); |
| }; |
| } // namespace mozc |
| #endif // MOZC_SESSION_SESSION_WATCH_DOG_H_ |