[class][v2] quickTimer - fast callback timer.

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Helgef
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Joined: 17 Jul 2016, 01:02
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[class][v2] quickTimer - fast callback timer.

07 Jun 2018, 05:28

Note: this script is for :arrow: AHK v2.
I post this in the gaming section because I guess gamers might be more interested in it, and the main example is a classic gaming example, a spam script, however, usage is not limited to gaming.

See :arrow: github for latest version.

When to use?
When the timer callback needs to fire frequently and completes very fast, if you use any sleeps, keydelays or other wait functions in the callback, you do not need this timer.

Test result
This is the result from the speed test example,
regularTimer.png
regularTimer.png (10.53 KiB) Viewed 326 times
quickTimer.png
quickTimer.png (10.36 KiB) Viewed 326 times
Basic usage
Usage is very simple, create a timer, call start() and stop(),

Code: Select all

#include timer.ahk
sendMode "event"
setkeydelay -1, -1
callback := func("send").bind("z")
qt := new quickTimer(callback)
f1::qt.start()
f1 up::qt.stop()
esc::exitapp
Available methods:
  • start, start the timer.
  • stop, stop the timer.
  • delete, delete the timer, do not use again when deleted.
  • startAll, starts all timers.
  • stopAll, stops all timers.
  • deleteAll, deletes all timers.
Tip
Only send keys with sendmode "sendevent" and setkeydelay -1, -1. Always include a hotkey to close the script, eg esc::exitapp.

How does it work?
While any timer is active, the class keeps a thread running which basically only does loop { sleep(-1) }, this prevents the running AutoHotkey.exe from doing its internal sleep and instead it will check its message queue, and there is no sleeping between timer messages.

Notes
This is experimental. CPU usage will be much higher. Your regular timers will also be fast while a quickTimer is active.

Self-contained example
This is a classic spam script. Hotkeys a and b sends a and b using quickTimer. Hotkey c and d sends c and d using regular timers. esc exits the script.

Code: Select all

; Classic "spam" example.
SendMode "Event"	; Do not change this.
SetKeyDelay -1, -1

aTimer := new quickTimer( () => send("a") )
bTimer := new quickTimer( () => send("b") )


a::aTimer.start()
b::bTimer.start()
a up::aTimer.stop()
b up::bTimer.stop()

c::
	if cIsOn
		return
	cIsOn := true
	setTimer c() => send("c"), 0
return
d::
	if dIsOn
		return
	dIsOn := true
	setTimer d() => send("d"), 0
return
c up::
	settimer "c", "off" 
	cIsOn := false
return
d up::
	settimer "d", "off" 
	dIsOn := false
return

esc::exitapp
class quickTimer {
	; User methods
	__new(callback, priority:=0){
		this.callback := callback
		this.priority := priority
		quickTimer.timers[this] := ""	; store the instance for xxxAll() methods
	}
	; Timer states:
	; 1 - running
	; 0 - stopped
	; -1 - deleted (or never started)
	state := -1
	start(){
		if this.state == 1
			return
		setTimer(this.callback, 0, this.priority)
		this.state := 1	
		local pte := quickTimer.enabled++
		if !pte
			quickTimer.toggleQT()
		return this
	}
	stop(){
		if this.state != 1
			return
		this.state := 0
		quickTimer.enabled--
		setTimer(this.callback, "off")
	}
	delete(){
		if this.state == 1
			this.stop()
		this.state := -1
		setTimer(this.callback, "delete")
		quickTimer.timers.delete this
		this.base := "" ; will throw error on further use.
	}
	startAll(){
		this.loopTimers(quickTimer.start)
	}
	stopAll(){
		this.loopTimers(quickTimer.stop)
	}
	deleteAll(){
		this.loopTimers(quickTimer.delete)
	}
	; Interal methods
	static timers := []
	loopTimers(fn){
		local
		global quickTimer
		for timer in quickTimer.timers
			fn.call(timer)
	}
	static enabled := 0
	toggleQT(){
		static tfn := quickTimer.quickFn.bind(quickTimer)
		setTimer(tfn, "-0")
	}
	static speed := -1 ; fastest. Set to -1 for fastest, 0 for fast or 1+ for 'quite' slow
	quickFn(){
		static dllsleep := func("dllcall").bind("Sleep", "uint")
		critical false
		while this.enabled
			(this.speed == -1) ? "" : dllsleep.call(this.speed), sleep(-1)
		
	}
}

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