thread.hpp

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#ifndef IFW_CCF_MPTK_THREAD_HPP_
#define IFW_CCF_MPTK_THREAD_HPP_
 
#include <string>
#include <thread>
#include <mutex>
#include <time.h>
 
#include <rad/logger.hpp>
#include <rad/exceptions.hpp>
 
#include <ccf/mptk/messageBus.hpp>
 
namespace ccf::mptk {
  const std::string THREAD_REGISTRY = "ThreadRegistry";
 
  void SleepUntil(struct timespec* ts,
                  int delay);
 
  class Thread {
  public:
    static std::map<std::string, Thread*> s_thread_registry;
 
    typedef enum {
      THREAD_EXEC_STOPPED = 1,
      THREAD_EXEC_RUNNING,
      THREAD_EXEC_PAUSED
    } ThreadExecControl;
 
    Thread(const std::string& thread_id,
           MessageBus& message_bus,
           const double period = 0.1);
    // TODO: Add Thread name in signature.
 
    virtual ~Thread();
 
    void SetPriority(const int prio = -1);
 
    std::string GetId() const;
 
    void Run();
 
    virtual void UserLogic();
 
    void Start();
 
    void Stop();
 
    void Pause();
 
    void Continue();
 
    // Get current drift (in seconds).
    double GetDrift() const;
 
    bool GetExecFlag();
 
    ThreadExecControl GetExecFlag() const;
 
    bool Terminated();
 
    MessageBus& MsgBus();
 
    std::string ToString() const;
 
  private:
    std::string                  m_thread_id;
    double                       m_period;
    ThreadExecControl            m_exec_flag;
    double                       m_start_time;
    uint64_t                     m_iteration_count;
    double                       m_drift;
    double                       m_previous_start_time;
    double                       m_next_execution;
    bool                         m_thread_terminated;
    bool                         m_gen_statistics;
    struct sched_param           m_sched_par;
 
    std::unique_ptr<std::thread> m_sys_thread;
    MessageBus*                  m_message_bus;
    std::recursive_mutex         m_thr_mutex;
  };
 
}
 
#endif // IFW_CCF_MPTK_THREAD_HPP_