runnable.h

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#pragma once
 
#include <string>
 
#include "common.h"
 
namespace btf
{
 
class Runnable
{
  public:
    enum class States
    {
        terminated,
 
        running,
 
        suspended,
 
        unknown
    };
 
    enum class Events
    {
        start,
 
        terminate,
 
        suspend,
 
        resume,
 
        unknown
    };
 
    Runnable(States state = States::unknown);
 
    ErrorCodes doStateTransition(Events core_event);
 
    static std::string eventToString(Events ev);
 
    static Events stringToEvent(const std::string& str);
 
    bool isRunning() const;
 
    bool wasSuspendedByTaskPreempt() const;
 
    void setWasSuspendedByTaskPreempt(bool val);
 
  private:
    States state_;
 
    bool was_suspended_by_task_preempt_{false};
};
} // namespace btf