Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria (garetxe@gmail.com)
Safe Haskell	None
Language	Haskell2010

GI.GLib.Structs.Timer

Contents

Exported types
Methods

Description

Opaque datatype that records a start time.

Synopsis

newtype Timer = Timer (ManagedPtr Timer)
noTimer :: Maybe Timer
timerContinue :: (HasCallStack, MonadIO m) => Timer -> m ()
timerDestroy :: (HasCallStack, MonadIO m) => Timer -> m ()
timerElapsed :: (HasCallStack, MonadIO m) => Timer -> CULong -> m Double
timerReset :: (HasCallStack, MonadIO m) => Timer -> m ()
timerStart :: (HasCallStack, MonadIO m) => Timer -> m ()
timerStop :: (HasCallStack, MonadIO m) => Timer -> m ()

Exported types

newtype Timer Source #

Memory-managed wrapper type.

Constructors

Timer (ManagedPtr Timer)

Instances

WrappedPtr Timer Source #
Instance details Defined in GI.GLib.Structs.Timer Methods wrappedPtrCalloc :: IO (Ptr Timer) # wrappedPtrCopy :: Timer -> IO Timer # wrappedPtrFree :: Maybe (FunPtr (Ptr Timer -> IO ())) #

noTimer :: Maybe Timer Source #

A convenience alias for Nothing :: Maybe Timer.

Methods

continue

timerContinue Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Timer	`timer`: a `Timer`.
-> m ()

Resumes a timer that has previously been stopped with timerStop. timerStop must be called before using this function.

Since: 2.4

destroy

timerDestroy Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Timer	`timer`: a `Timer` to destroy.
-> m ()

Destroys a timer, freeing associated resources.

elapsed

timerElapsed Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Timer	`timer`: a `Timer`.
-> CULong	`microseconds`: return location for the fractional part of seconds elapsed, in microseconds (that is, the total number of microseconds elapsed, modulo 1000000), or `Nothing`
-> m Double	Returns: seconds elapsed as a floating point value, including any fractional part.

If timer has been started but not stopped, obtains the time since the timer was started. If timer has been stopped, obtains the elapsed time between the time it was started and the time it was stopped. The return value is the number of seconds elapsed, including any fractional part. The microseconds out parameter is essentially useless.

reset

timerReset Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Timer	`timer`: a `Timer`.
-> m ()

This function is useless; it's fine to call timerStart on an already-started timer to reset the start time, so timerReset serves no purpose.

start

timerStart Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Timer	`timer`: a `Timer`.
-> m ()

Marks a start time, so that future calls to timerElapsed will report the time since timerStart was called. g_timer_new() automatically marks the start time, so no need to call timerStart immediately after creating the timer.

stop

timerStop Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Timer	`timer`: a `Timer`.
-> m ()

Marks an end time, so calls to timerElapsed will return the difference between this end time and the start time.