wall_coarse_clock.hpp

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#pragma once
 
/// @file userver/utils/datetime/wall_coarse_clock.hpp
/// @brief @copybrief utils::datetime::WallCoarseClock
 
#include <chrono>
 
USERVER_NAMESPACE_BEGIN
 
namespace utils::datetime {
 
/// @ingroup userver_universal
///
/// @brief System clock with up to a few millisecond resolution that is slightly
/// faster than the std::chrono::system_clock
struct WallCoarseClock final {
    // Duration matches system clock, but it is updated once in a few milliseconds
    using duration = std::chrono::system_clock::duration;
    using rep = duration::rep;
    using period = duration::period;
    using time_point = std::chrono::system_clock::time_point;
 
    static constexpr bool is_steady = false;
 
    static time_point now() noexcept;
    static duration resolution() noexcept;
};
 
}  // namespace utils::datetime
 
USERVER_NAMESPACE_END