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botanic

read ini continousally best pratices

12 posts in this topic

what are the best practices for reading an ini over and over?

The options that i can think of are

IniRead on a while loop

FileGetTime on a while loop

if $file = $oldfile on a while loop

 

I want to avoid as much disk i/o as possible so im open to any suggestions as well.

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#2 ·  Posted (edited)

AutoIt INI Function are the fastest, however have limitations, however try

Ciao.

Edited by DXRW4E

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After some testing the ini functions dont seem to be the fastest

here is my test code

Global Const $configfile = "config.ini"
#include <Crypt.au3>
#include <File.au3>



local $i =0
$i = 0
$oldfile =""
$file=""
$newfile=""
$timer = TimerInit()
while $i <10000
    $i = $i +1
    $file = FileOpen($configfile)
    $newfile = FileRead($file)
    FileClose($file)
    if $newfile <> $oldfile Then $newfile = $oldfile
WEnd
ConsoleWrite("FileRead:"&TimerDiff($timer)&@CRLF)

$i = 0
$oldfile =""
$file=""
$newfile=""
$timer = TimerInit()
while $i <10000
    $i = $i +1
    $newfile = FileGetTime($configfile, 0 ,1)
    if $newfile <> $oldfile Then $newfile = $oldfile
WEnd
ConsoleWrite("FileGetTime:"&TimerDiff($timer)&@CRLF)

$i = 0
$oldfile =""
$file=""
$newfile=""
_Crypt_Startup()
$timer = TimerInit()
while $i <10000
    $i = $i +1
    $newfile = _MD5Hash($configfile)
    if $newfile <> $oldfile Then $newfile = $oldfile
WEnd
ConsoleWrite("MD5:"&TimerDiff($timer)&@CRLF)
_Crypt_Shutdown()


$i = 0
$oldfile =""
$file=""
$newfile=""
$timer = TimerInit()
while $i <10000
    $i = $i +1
    $newfile = IniRead($configfile, "status", "running", "0")
    if $newfile <> $oldfile Then $newfile = $oldfile
WEnd
ConsoleWrite("IniRead:"&TimerDiff($timer)&@CRLF)


$i = 0
$oldfile =""
$file=""
$newfile=""
$timer = TimerInit()
while $i <10000
    $i = $i +1
    $newfile = IniReadSection($configfile, "status")
    if $newfile <> $oldfile Then $newfile = $oldfile
WEnd
ConsoleWrite("IniReadSection:"&TimerDiff($timer)&@CRLF)



; By guinness - 2012-2013.
Func _MD5Hash($sFilePath, $iPercentageRead = Default) ; Default is 100 percent.
    $iPercentageRead = Int($iPercentageRead)
    If ($iPercentageRead > 100) Or ($iPercentageRead < 0) Then
        $iPercentageRead = 100
    EndIf
    Return _Crypt_HashData(FileRead($sFilePath, ($iPercentageRead / 100) * FileGetSize($sFilePath)), $CALG_MD5)
EndFunc   ;==>_MD5Hash

results

 

FileRead:938.560059104115
FileGetTime:346.317013399032
MD5:2516.40223667911
IniRead:703.563987346681
IniReadSection:808.421184401613

 

Seems FileGetTime is the current winner, anyone have any other suggestions?

Also I am not looking for "fastest" but "lowest disk i/o"

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Your tests are meaningless, you're not testing the same criteria in the tests.

What EXACTLY are you trying to get out of the file that any of those tests are supposed to correlate to?


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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basically i just want to test if a file changed, with the lowest possible disk i/o

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#6 ·  Posted (edited)

Try to use the CRC32 or MD5, about Hash Function in Forum you will find thousands of info

Ciao.

Edited by DXRW4E

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Tried MD5 in my test but it was like 3x slower then just comparing the fileread string...

I will give CRC32 a shot thanks

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What is writing to the ini file that would change it?


If I posted any code, assume that code was written using the latest release version unless stated otherwise. Also, if it doesn't work on XP I can't help with that because I don't have access to XP, and I'm not going to.
Give a programmer the correct code and he can do his work for a day. Teach a programmer to debug and he can do his work for a lifetime - by Chirag Gude
How to ask questions the smart way!

I hereby grant any person the right to use any code I post, that I am the original author of, on the autoitscript.com forums, unless I've specifically stated otherwise in the code or the thread post. If you do use my code all I ask, as a courtesy, is to make note of where you got it from.

Back up and restore Windows user files _Array.au3 - Modified array functions that include support for 2D arrays.  -  ColorChooser - An add-on for SciTE that pops up a color dialog so you can select and paste a color code into a script.  -  Customizable Splashscreen GUI w/Progress Bar - Create a custom "splash screen" GUI with a progress bar and custom label.  -  _FileGetProperty - Retrieve the properties of a file  -  SciTE Toolbar - A toolbar demo for use with the SciTE editor  -  GUIRegisterMsg demo - Demo script to show how to use the Windows messages to interact with controls and your GUI.  -   Latin Square password generator

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I have a few scripts that work together and act based on settings in some ini files.

So i have script A write to an ini file and i need script B and C to be able to see the update and do stuff based on it.

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You create a small function that will check the ini file and return true or false depending on the iniread.

And then just call it when you want to check it.

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You could make the scrtipt that writes to the ini send a message to the other scripts to say "ini has changed"? It could also give information on which entry had changed.


Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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... or monitor the ini file change by using Windows hook. See >this UDF.


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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