blob: 898029f8fe30769528d1363a1190ee815780b851 [file] [log] [blame]
#pragma once
#include "manager.hpp"
#include "property_change_listener.hpp"
#include <sdbusplus/bus.hpp>
#include <xyz/openbmc_project/Time/EpochTime/server.hpp>
#include <chrono>
namespace phosphor
{
namespace time
{
using namespace std::chrono;
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<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};
};
} // namespace time
} // namespace phosphor