#pragma once #include "manager.hpp" #include "property_change_listener.hpp" #include #include #include namespace phosphor { namespace time { using EpochTimeIntf = sdbusplus::server::object_t< sdbusplus::xyz::openbmc_project::Time::server::EpochTime>; /** @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 EpochTimeIntf, public PropertyChangeListner { public: BmcEpoch(sdbusplus::bus_t& bus, const char* objPath, Manager& manager) : EpochTimeIntf(bus, objPath), bus(bus), manager(manager) { initialize(); } ~BmcEpoch() override; BmcEpoch(const BmcEpoch&) = delete; BmcEpoch(BmcEpoch&&) = delete; BmcEpoch& operator=(const BmcEpoch&) = delete; BmcEpoch& operator=(BmcEpoch&&) = delete; /** @brief Notified on time mode changed */ void onModeChanged(Mode mode) override; /** * @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; protected: /** @brief Persistent sdbusplus DBus connection */ sdbusplus::bus_t& bus; /** @brief The manager to handle OpenBMC time */ Manager& manager; /** @brief Set current time to system * * This function set the time to system by invoking systemd * org.freedesktop.timedate1's SetTime method. * * @param[in] timeOfDayUsec - Microseconds since UTC * * @return true or false to indicate if it sets time successfully */ bool setTime(const std::chrono::microseconds& timeOfDayUsec); /** @brief Get current time * * @return Microseconds since UTC */ static std::chrono::microseconds getTime(); private: /** @brief The fd for time change event */ int timeFd = -1; /** @brief Initialize timerFd related resource */ void initialize(); /** @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 deleter of sd_event_source */ std::function sdEventSourceDeleter = [](sd_event_source* p) { if (p) { sd_event_source_unref(p); } }; using SdEventSource = std::unique_ptr; /** @brief The event source on system time change */ SdEventSource timeChangeEventSource{nullptr, sdEventSourceDeleter}; }; } // namespace time } // namespace phosphor