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#pragma once
#include <systemd/sd-event.h>
namespace phosphor
{
namespace ipmi
{
/** @class Timer
* @brief Manages starting watchdog timers and handling timeouts
*/
class Timer
{
public:
/** @brief Only need the default Timer */
Timer() = delete;
Timer(const Timer&) = delete;
Timer& operator=(const Timer&) = delete;
Timer(Timer&&) = delete;
Timer& operator=(Timer&&) = delete;
/** @brief Constructs timer object
*
* @param[in] events - sd_event pointer
*/
Timer(sd_event* events)
: timeEvent(events)
{
// Initialize the timer
initialize();
}
~Timer()
{
if (eventSource)
{
eventSource = sd_event_source_unref(eventSource);
}
}
inline auto isExpired()
{
return expired;
}
private:
/** @brief the sd_event structure */
sd_event* timeEvent = nullptr;
/** @brief Source of events */
sd_event_source* eventSource = nullptr;
/** @brief Returns if the associated timer is expired
*
* This is set to true when the timeoutHandler is called into
*/
bool expired = false;
/** @brief Initializes the timer object with infinite
* expiration time and sets up the callback handler
*
* @return None.
*
* @error std::runtime exception thrown
*/
void initialize();
/** @brief Callback function when timer goes off
*
* On getting the signal, initiate the hard power off request
*
* @param[in] eventSource - Source of the event
* @param[in] usec - time in micro seconds
* @param[in] userData - User data pointer
*
*/
static int timeoutHandler(sd_event_source* eventSource,
uint64_t usec, void* userData);
};
} // namespace ipmi
} // namespace phosphor
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