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#pragma once
#include "bmc_time_change_listener.hpp"
#include "epoch_base.hpp"
#include <chrono>
namespace phosphor
{
namespace time
{
using namespace std::chrono;
/** @class BmcEpoch
* @brief OpenBMC BMC EpochTime implementation.
* @details A concrete implementation for xyz.openbmc_project.Time.EpochTime
* DBus API for BMC's epoch time.
*/
class BmcEpoch : public EpochBase
{
public:
friend class TestBmcEpoch;
BmcEpoch(sdbusplus::bus::bus& bus, const char* objPath);
~BmcEpoch();
/**
* @brief Get value of Elapsed property
*
* @return The elapsed microseconds since UTC
**/
uint64_t elapsed() const override;
/**
* @brief Set value of Elapsed property
*
* @param[in] value - The microseconds since UTC to set
* @return The updated elapsed microseconds since UTC
**/
uint64_t elapsed(uint64_t value) override;
/** @brief Set the listner for bmc time change
*
* @param[in] listener - The pointer to the listener
*/
void setBmcTimeChangeListener(BmcTimeChangeListener* listener);
private:
/** @brief The fd for time change event */
int timeFd = -1;
/** @brief Initialize timerFd related resource */
void initialize();
/** @brief Notify the listeners that bmc time is changed
*
* @param[in] time - The epoch time in microseconds to notify
*/
void notifyBmcTimeChange(const microseconds& time);
/** @brief The callback function on system time change
*
* @param[in] es - Source of the event
* @param[in] fd - File descriptor of the timer
* @param[in] revents - Not used
* @param[in] userdata - User data pointer
*/
static int onTimeChange(sd_event_source* es, int fd, uint32_t revents,
void* userdata);
/** @brief The reference of sdbusplus bus */
sdbusplus::bus::bus& bus;
/** @brief The deleter of sd_event_source */
std::function<void(sd_event_source*)> sdEventSourceDeleter =
[](sd_event_source* p) {
if (p)
{
sd_event_source_unref(p);
}
};
using SdEventSource =
std::unique_ptr<sd_event_source, decltype(sdEventSourceDeleter)>;
/** @brief The event source on system time change */
SdEventSource timeChangeEventSource{nullptr, sdEventSourceDeleter};
/** @brief The listener for bmc time change */
BmcTimeChangeListener* timeChangeListener = nullptr;
};
} // namespace time
} // namespace phosphor
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