Safe Haskell	Trustworthy
Language	Haskell2010

Data.Time.Clock.System.Compat

Synopsis

systemEpochDay :: Day
data SystemTime = MkSystemTime {
- systemSeconds :: !Int64
- systemNanoseconds :: !Word32
}
truncateSystemTimeLeapSecond :: SystemTime -> SystemTime
getSystemTime :: IO SystemTime
systemToUTCTime :: SystemTime -> UTCTime
utcToSystemTime :: UTCTime -> SystemTime
systemToTAITime :: SystemTime -> AbsoluteTime

Documentation

systemEpochDay :: Day #

The day of the epoch of SystemTime, 1970-01-01

data SystemTime #

SystemTime is time returned by system clock functions. Its semantics depends on the clock function, but the epoch is typically the beginning of 1970. Note that systemNanoseconds of 1E9 to 2E9-1 can be used to represent leap seconds.

Constructors

MkSystemTime
Fields systemSeconds :: !Int64 systemNanoseconds :: !Word32

Instances

Instances details

Eq SystemTime
Instance details Defined in Data.Time.Clock.Internal.SystemTime Methods (==) :: SystemTime -> SystemTime -> Bool # (/=) :: SystemTime -> SystemTime -> Bool #
Data SystemTime #
Instance details Defined in Data.Time.Orphans Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> SystemTime -> c SystemTime # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c SystemTime # toConstr :: SystemTime -> Constr # dataTypeOf :: SystemTime -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c SystemTime) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c SystemTime) # gmapT :: (forall b. Data b => b -> b) -> SystemTime -> SystemTime # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> SystemTime -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> SystemTime -> r # gmapQ :: (forall d. Data d => d -> u) -> SystemTime -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> SystemTime -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> SystemTime -> m SystemTime # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> SystemTime -> m SystemTime # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> SystemTime -> m SystemTime #
Ord SystemTime
Instance details Defined in Data.Time.Clock.Internal.SystemTime Methods compare :: SystemTime -> SystemTime -> Ordering # (<) :: SystemTime -> SystemTime -> Bool # (<=) :: SystemTime -> SystemTime -> Bool # (>) :: SystemTime -> SystemTime -> Bool # (>=) :: SystemTime -> SystemTime -> Bool # max :: SystemTime -> SystemTime -> SystemTime # min :: SystemTime -> SystemTime -> SystemTime #
Show SystemTime
Instance details Defined in Data.Time.Clock.Internal.SystemTime Methods showsPrec :: Int -> SystemTime -> ShowS # show :: SystemTime -> String # showList :: [SystemTime] -> ShowS #
NFData SystemTime
Instance details Defined in Data.Time.Clock.Internal.SystemTime Methods rnf :: SystemTime -> () #

truncateSystemTimeLeapSecond :: SystemTime -> SystemTime #

Map leap-second values to the start of the following second. The resulting systemNanoseconds will always be in the range 0 to 1E9-1.

getSystemTime :: IO SystemTime #

Get the system time, epoch start of 1970 UTC, leap-seconds ignored. getSystemTime is typically much faster than getCurrentTime.

systemToUTCTime :: SystemTime -> UTCTime #

Convert SystemTime to UTCTime, matching zero SystemTime to midnight of systemEpochDay UTC.

utcToSystemTime :: UTCTime -> SystemTime #

Convert UTCTime to SystemTime, matching zero SystemTime to midnight of systemEpochDay UTC.

systemToTAITime :: SystemTime -> AbsoluteTime #

Convert SystemTime to AbsoluteTime, matching zero SystemTime to midnight of systemEpochDay TAI.