timespec.hpp

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//    OpenVPN -- An application to securely tunnel IP networks
//               over a single port, with support for SSL/TLS-based
//               session authentication and key exchange,
//               packet encryption, packet authentication, and
//               packet compression.
//
//    Copyright (C) 2012- OpenVPN Inc.
//
//    SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
 
#pragma once
 
#include <time.h>
#include <cstdint> // for std::uint64_t
 
namespace openvpn {
 
typedef std::uint64_t nanotime_t;
 
namespace TimeSpec {
 
inline std::uint64_t milliseconds_since_epoch(const struct timespec &ts)
{
    return std::uint64_t(ts.tv_sec) * std::uint64_t(1000)
           + std::uint64_t(ts.tv_nsec) / std::uint64_t(1000000);
}
 
inline nanotime_t nanoseconds_since_epoch(const struct timespec &ts)
{
    return std::uint64_t(ts.tv_sec) * std::uint64_t(1000000000)
           + std::uint64_t(ts.tv_nsec);
}
 
} // namespace TimeSpec
} // namespace openvpn