System.Posix.Timer

POSIX timers.

Documentation

data ITimerSpec

Mirrors struct itimerspec.

Constructors

ITimerSpec

Fields

• iTimerSpecInterval :: !TimeSpec
• iTimerSpecValue :: !TimeSpec

Instances

Eq ITimerSpec

Methods

(==) :: ITimerSpec -> ITimerSpec -> Bool

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

Show ITimerSpec

Methods

showsPrec :: Int -> ITimerSpec -> ShowS

show :: ITimerSpec -> String

showList :: [ITimerSpec] -> ShowS

Storable ITimerSpec

Methods

sizeOf :: ITimerSpec -> Int

alignment :: ITimerSpec -> Int

peekElemOff :: Ptr ITimerSpec -> Int -> IO ITimerSpec

pokeElemOff :: Ptr ITimerSpec -> Int -> ITimerSpec -> IO ()

peekByteOff :: Ptr b -> Int -> IO ITimerSpec

pokeByteOff :: Ptr b -> Int -> ITimerSpec -> IO ()

peek :: Ptr ITimerSpec -> IO ITimerSpec

poke :: Ptr ITimerSpec -> ITimerSpec -> IO ()

data Timer

Mirrors timer_t.

Instances

Eq Timer

Methods

(==) :: Timer -> Timer -> Bool

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

Ord Timer

Methods

compare :: Timer -> Timer -> Ordering

(<) :: Timer -> Timer -> Bool

(<=) :: Timer -> Timer -> Bool

(>) :: Timer -> Timer -> Bool

(>=) :: Timer -> Timer -> Bool

max :: Timer -> Timer -> Timer

min :: Timer -> Timer -> Timer

Show Timer

Methods

showsPrec :: Int -> Timer -> ShowS

show :: Timer -> String

showList :: [Timer] -> ShowS

Storable Timer

Methods

sizeOf :: Timer -> Int

alignment :: Timer -> Int

peekElemOff :: Ptr Timer -> Int -> IO Timer

pokeElemOff :: Ptr Timer -> Int -> Timer -> IO ()

peekByteOff :: Ptr b -> Int -> IO Timer

pokeByteOff :: Ptr b -> Int -> Timer -> IO ()

peek :: Ptr Timer -> IO Timer

poke :: Ptr Timer -> Timer -> IO ()

createTimer

Arguments

:: MonadBase IO μ

=> Clock

-> Maybe (Signal, WordPtr)

Optional signal to raise on timer expirations and value of siginfo.si_value.

-> μ Timer

Create a timer. See timer_create(3).

configureTimer

Arguments

:: MonadBase IO μ

=> Timer

-> Bool

Whether the expiration time is absolute.

-> TimeSpec

Expiration time. Zero value disarms the timer.

-> TimeSpec

Interval between subsequent expirations.

-> μ (TimeSpec, TimeSpec)

Setup the timer. See timer_settime(3).

timerTimeLeft :: MonadBase IO μ => Timer -> μ (TimeSpec, TimeSpec)

Get the amount of time left until the next expiration and the interval between the subsequent expirations. See timer_gettime(3).

timerOverrunCnt :: MonadBase IO μ => Timer -> μ CInt

Get the timer overrun count. See timer_getoverrun(3).

destroyTimer :: MonadBase IO μ => Timer -> μ ()

Destroy the timer. See timer_delete(3).