eive-obsw/watchdog/Watchdog.h

#ifndef WATCHDOG_WATCHDOG_H_
#define WATCHDOG_WATCHDOG_H_

#include <array>
#include <cstdint>
#include <string>

class WatchdogTask {
public:
    enum class States {
        NOT_STARTED,
        RUNNING,
        SUSPENDED,
        FAULTY
    };

    enum class LoopResult {
        OK,
        SUSPEND_RQ,
        CANCEL_RQ,
        RESTART_RQ,
        TIMEOUT,
        HUNG_UP,
        FAULT
    };

    WatchdogTask();

    virtual ~WatchdogTask();

    int performOperation();
private:
    int fd = 0;

    bool obswRunning = false;
    bool watchdogRunning = false;
    bool printNotRunningLatch = false;
    std::array<uint8_t, 64> buf;
    States state = States::NOT_STARTED;

    LoopResult watchdogLoop();
    LoopResult pollEvent(struct pollfd& waiter);
    LoopResult parseCommandByte(ssize_t readLen);

    int performRunningOperation();
    int performNotRunningOperation(LoopResult type);
    int performSuspendOperation();
};

#endif /* WATCHDOG_WATCHDOG_H_ */