ndn::time::system_clock Class Reference

System clock. More...

#include <time.hpp>

Public Types
typedef BOOST_SYSTEM_CLOCK_DURATION	duration
typedef duration::rep	rep
typedef duration::period	period
typedef boost::chrono::time_point< system_clock >	time_point
typedef time_point	TimePoint
typedef duration	Duration

Static Public Member Functions
static time_point	now () noexcept
static std::time_t	to_time_t (const time_point &t) noexcept
static time_point	from_time_t (std::time_t t) noexcept

Static Public Attributes
static constexpr bool	is_steady = false

Detailed Description

System clock.

System clock represents the system-wide real time wall clock.

It may not be monotonic: on most systems, the system time can be adjusted at any moment. It is the only clock that has the ability to be displayed and converted to/from UNIX timestamp.

To get current TimePoint:

system_clock::TimePoint now = system_clock::now();

To convert TimePoint to/from UNIX timestamp:

system_clock::TimePoint time = ...; uint64_t timestampInMilliseconds = toUnixTimestamp(time).count(); system_clock::TimePoint time2 = fromUnixTimestamp(milliseconds(timestampInMilliseconds));

Definition at line 69 of file time.hpp.

Member Typedef Documentation

duration

typedef BOOST_SYSTEM_CLOCK_DURATION ndn::time::system_clock::duration

Definition at line 72 of file time.hpp.

rep

typedef duration::rep ndn::time::system_clock::rep

Definition at line 73 of file time.hpp.

period

typedef duration::period ndn::time::system_clock::period

Definition at line 74 of file time.hpp.

time_point

typedef boost::chrono::time_point<system_clock> ndn::time::system_clock::time_point

Definition at line 75 of file time.hpp.

TimePoint

typedef time_point ndn::time::system_clock::TimePoint

Definition at line 78 of file time.hpp.

Duration

typedef duration ndn::time::system_clock::Duration

Definition at line 79 of file time.hpp.

Member Function Documentation

now()

system_clock::time_point ndn::time::system_clock::now ( )

staticnoexcept

Definition at line 45 of file time.cpp.

Referenced by ndn::Name::appendVersion(), ndn::ValidatorConfig::checkPolicy(), ndn::CommandInterestValidator::checkPolicy(), ndn::security::ValidityPeriod::Error::Error(), nfd::ForwarderStatusManager::ForwarderStatusManager(), ndn::security::KeyChain::getDefaultKeyParamsForIdentity(), ndn::SecPublicInfo::getNewKeyName(), ndn::Name::getPrefix(), ndn::ValidatorConfig::isEmpty(), ndn::Certificate::isTooEarly(), ndn::Certificate::isTooLate(), ndn::ValidatorConfig::load(), ndn::security::KeyChain::selfSign(), and ndn::security::KeyChain::signWithSha256().

to_time_t()

std::time_t ndn::time::system_clock::to_time_t ( const time_point &  t )

staticnoexcept

Definition at line 57 of file time.cpp.

Referenced by ndn::time::toIsoString(), and ndn::time::toString().

from_time_t()

system_clock::time_point ndn::time::system_clock::from_time_t ( std::time_t  t )

staticnoexcept

Definition at line 63 of file time.cpp.

Referenced by ndn::time::fromIsoString(), ndn::time::fromString(), and ndn::time::getUnixEpoch().

Member Data Documentation

is_steady

constexpr bool ndn::time::system_clock::is_steady = false

static

Definition at line 76 of file time.hpp.

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The documentation for this class was generated from the following files:

• ndnSIM/ndn-cxx/src/util/time.hpp
• ndnSIM/ndn-cxx/src/util/time.cpp