Cabal-3.16.0.0: A framework for packaging Haskell software

Safe Haskell	None
Language	Haskell2010

Distribution.Compat.Time

Synopsis

newtype ModTime = ModTime Word64
getModTime :: FilePath -> IO ModTime
getFileAge :: FilePath -> IO Double
getCurTime :: IO ModTime
posixSecondsToModTime :: Int64 -> ModTime
calibrateMtimeChangeDelay :: IO (Int, Int)

Documentation

newtype ModTime Source #

An opaque type representing a file's modification time, represented internally as a 64-bit unsigned integer in the Windows UTC format.

Constructors

Instances

Instances details

Structured ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Methods

structure :: Proxy ModTime -> Structure #

structureHash' :: Tagged ModTime MD5

Bounded ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Methods

minBound :: ModTime #

maxBound :: ModTime #

Generic ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Associated Types

type Rep ModTime

Instance details

Defined in Distribution.Compat.Time

type Rep ModTime = D1 ('MetaData "ModTime" "Distribution.Compat.Time" "Cabal-3.16.0.0-1YZHuvI2dgR4GlGeuk23es" 'True) (C1 ('MetaCons "ModTime" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64)))

Methods

from :: ModTime -> Rep ModTime x #

to :: Rep ModTime x -> ModTime #

Read ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Methods

readsPrec :: Int -> ReadS ModTime #

readList :: ReadS [ModTime] #

readPrec :: ReadPrec ModTime #

readListPrec :: ReadPrec [ModTime] #

Show ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Methods

showsPrec :: Int -> ModTime -> ShowS #

show :: ModTime -> String #

showList :: [ModTime] -> ShowS #

Binary ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Methods

put :: ModTime -> Put #

get :: Get ModTime #

putList :: [ModTime] -> Put #

Eq ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Methods

(==) :: ModTime -> ModTime -> Bool #

(/=) :: ModTime -> ModTime -> Bool #

Ord ModTime Source #

Instance details

Defined in Distribution.Compat.Time

Methods

compare :: ModTime -> ModTime -> Ordering #

(<) :: ModTime -> ModTime -> Bool #

(<=) :: ModTime -> ModTime -> Bool #

(>) :: ModTime -> ModTime -> Bool #

(>=) :: ModTime -> ModTime -> Bool #

max :: ModTime -> ModTime -> ModTime #

min :: ModTime -> ModTime -> ModTime #

type Rep ModTime Source #

Instance details

Defined in Distribution.Compat.Time

type Rep ModTime = D1 ('MetaData "ModTime" "Distribution.Compat.Time" "Cabal-3.16.0.0-1YZHuvI2dgR4GlGeuk23es" 'True) (C1 ('MetaCons "ModTime" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Word64)))

getModTime :: FilePath -> IO ModTime Source #

Return modification time of the given file. Works around the low clock resolution problem that getModificationTime has on GHC < 7.8.

This is a modified version of the code originally written for Shake by Neil Mitchell. See module Development.Shake.FileInfo.

getFileAge :: FilePath -> IO Double Source #

Return age of given file in days.

getCurTime :: IO ModTime Source #

Return the current time as ModTime .

posixSecondsToModTime :: Int64 -> ModTime Source #

Convert POSIX seconds to ModTime.

calibrateMtimeChangeDelay :: IO (Int, Int) Source #

Based on code written by Neil Mitchell for Shake. See sleepFileTimeCalibrate in Type . Returns a pair of microsecond values: first, the maximum delay seen, and the recommended delay to use before testing for file modification change. The returned delay is never smaller than 10 ms, but never larger than 1 second.