Data.Time.Clock.System.Compat

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

Eq SystemTime

Defined in Data.Time.Clock.Internal.SystemTime

Methods

(==) :: SystemTime -> SystemTime -> Bool

(/=) :: SystemTime -> SystemTime -> Bool

Data SystemTime

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

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

Defined in Data.Time.Clock.Internal.SystemTime

Methods

showsPrec :: Int -> SystemTime -> ShowS

show :: SystemTime -> String

showList :: [SystemTime] -> ShowS

NFData SystemTime

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.