System.Posix.Timer

POSIX timers.

Documentation

data ITimerSpec

Mirrors struct itimerspec.

Constructors

ITimerSpec

Fields

iTimerSpecInterval :: !TimeSpec

iTimerSpecValue :: !TimeSpec

Instances

Eq ITimerSpec

Show ITimerSpec

Storable ITimerSpec

data Timer

Mirrors timer_t.

Instances

Eq Timer

Ord Timer

Show Timer

Storable Timer

createTimer

Arguments

:: MonadBase μ IO

=> 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 μ IO

=> 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 μ IO => 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 μ IO => Timer -> μ CInt

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

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

Destroy the timer. See timer_delete(3).