systime.hpp

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#ifndef NDNPH_PORT_UNIXTIME_SYSTIME_HPP
#define NDNPH_PORT_UNIXTIME_SYSTIME_HPP
 
#include "../../core/common.hpp"
 
#include <sys/time.h>
 
namespace ndnph {
namespace port_unixtime_systime {
 
class UnixTime {
public:
  UnixTime() = delete;
 
  static uint64_t now() {
    ::timeval tv{};
    ::gettimeofday(&tv, nullptr);
    return static_cast<uint64_t>(tv.tv_sec) * 1000000 + static_cast<uint64_t>(tv.tv_usec);
  }
 
  static bool valid(uint64_t t) {
    return t >= 540109800000000;
  }
 
  static void set(uint64_t t) {
#ifdef NDNPH_PORT_UNIXTIME_SYSTIME_CANSET
    ::timeval tv{
      .tv_sec = static_cast<decltype(tv.tv_sec)>(t / 1000000),
      .tv_usec = static_cast<decltype(tv.tv_usec)>(t % 1000000),
    };
    ::settimeofday(&tv, nullptr);
#else
    (void)t;
#endif
  }
};
 
} // namespace port_unixtime_systime
 
#ifdef NDNPH_PORT_UNIXTIME_SYSTIME
namespace port {
using UnixTime = port_unixtime_systime::UnixTime;
} // namespace port
#endif
 
} // namespace ndnph
 
#endif // NDNPH_PORT_UNIXTIME_SYSTIME_HPP