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    • By argumentum
      so in https://www.autoitscript.com/forum/topic/193254-solved-ipc-between-system-and-user/ I asked around about IPCs and got all the answers I was looking for.
      Now the question is: what IPC is most "resilient" on an overwhelmed PC, meaning, the CPU is at 100%, memory is top out and, as is always, need to rely on the IPC.
      ..and all this happened because I open over 100 GUIs at once 😜
      ..but it happens sporadically on low CPU or memory demand anyways.
      ..should I sleep() some time before running another instance ?
      I did not know if to make the question in technical, chat, ..or here. So it's here.   
      Since you will ask what I've tried, I've used the IPC from the Fork UDFish ( WM_COPYDATA that can do Admin/user mix ) and the FMIPC file mapping,  that work under the same conditions.
      So, how do you handle IPC if it fails ?
       
    • By tatane
      Hi,
      I would like to send an array from a script to a another. This array has 1000 rows and 4 columns with this kind of data :
      1st row  =     528  ;  31  ;   HOSTNAME|1|02:45:47|abcdefgh|username|5   ;   old
      2nd row = ...
      What IPC should I use ?
       
       
    • By argumentum
      There is this topic on Examples about IPC. My question is: What is the best IPC to work with between a script running as SYSTEM level, User level, and Administrator level to interact with each other ? 
      Thanks
    • By JohnWIlling
      IPC_IO.AU3
      I am in the need for a simple synchronous Client/Server communication.  I found several examples and references to various kinds of Inter-Process Communications such as TCP, Named Pipes, Mail Slots, Shared Memory, Memory Mapped Files, and simple Files.  I wanted to see what the best solutions would be.  I began developing a library and slowly began adding each of the IPC methods and ended up with a library with a very simple synchronous “ASCII” API where the application can choose which method to use at startup.
      For the Server side, a Server app must initialize communication by calling:
      Func InitConnection($cType = $cDefaultType, $ResourceName = "", $bBlock = $cDefaultBlocking, $fSleepFunc = "", $iBufSize = $DEFAULT_BUFSIZE)
      The optional arguments allow the app to specify the connection type (such as: $cNamedPipe, $cFile, $cTCP, $cSharedMem, $cMailSlot), a value for the resource name (such as the file, named pipe name, TCP port number, etc.), the communication buffer size, and a callback function for when the “read” is waiting for data.
      A “File Descriptor” is returned and must be used in the future API calls.
      The Server side must then call:
      Func StartConnection($iFD)
      This call waits for a Client to connect.  The Server then calls:
                      Func ReadData($iFD, ByRef $sData)
      To read a Request from the Client and then calls:
                      Func WriteData($iFD, ByRef $sData)
      To send the reply back to the Client.
      When communication with the Client is done, the Server app will call:
      Func StopConnection($iFD)
      When the Server app is done with the communications it will call:
      Func EndConnection($iFD)
       
      For the Client side, a Client app must open the communication by calling:
      Func OpenConnection($cType = $cDefaultType, $ResourceName = "", $bBlock = $cDefaultBlocking, $fSleepFunc = "", $iBufSize = $DEFAULT_BUFSIZE)
      The optional arguments allow the app to specify the connection type (such as: $cNamedPipe, $cFile, $cTCP, $cSharedMem, $cMailSlot), a value for the resource name (such as the file, named pipe name, TCP port number, etc.), the communication buffer size, and a callback function for when the “read” is waiting for data.
      A “File Descriptor” is returned and must be used in the future API calls.
      The Client side then send a request to the Server app by calling:
                      Func WriteData($iFD, ByRef $sData)
      To read a Response from the Server by calling:
                      Func ReadData($iFD, ByRef $sData)
      To end the connection to the Server by calling:
      Func CloseConnection($iFD)
       
      Within the IPC_IO.AU3 library, each IPC method is ether:
      ·         “stream” based where data is read/written by calling _WinAPI_ReadFile/TCPRecv or _WinAPI_WriteFile/ TCPSend
      ·         “direct” based for Shared memory where the Client reads the data directly from the Server App’s memory and the Server directly reads the Client App’s memory
      In processing a request, the “ReadData” process starts by checking if data is ready to be read by calling the routine: “ReadStart”, then it reads in the size of the request by calling “ReadSize”, it then reads in the Ascii Request by calling “ReadBuffer”, then the sequence is completed by calling “ReadEnd”. 
      The Write Process follows the same sequence with “WriteData” calling “WriteStart”, “WriteSize”, “WriteBuffer”, “WriteEnd”.
       
      Results
      My testing showed that the performance of sending and receiving of a 10k file took:
      ·         "Shared Memory" was the fastest, at 0.007468 Sec
      ·         “Named Pipes” at 0.015954
      ·         “Mail Slots” at 0.016427
      ·         “File Based” at 0.270287
      ·         “TCP” at 0.994884
       
      IPC_IO.au3
      Client.au3
      Server.au3
    • By dubi
      Hi,


       
      Background: i have a number of instances of the same application that I want to automate in parallel.

      Unfortunately, I cannot completely automate these instances in the background. So, from time to time these instances need to have the focus so that I can interact with the controls via “send” directly.

      Each of the application instances is controlled by a au3 complied script. Each script (called with a parameter) manages the automation of the respective application-instance. Each of the (complied) script (instances) is called by a (central) front end with a gui. The front end controls if the “focus” is available to do the “send” and “mouseclick” modifications. The central front end either allows a child to have the focus or prevents it to get the focus (in which case the child will wait and checks again). The code for the front end is included. Apologies for the lengthy explanation.


      #RequireAdmin #include <ButtonConstants.au3> #include <GUIConstantsEx.au3> #include <WindowsConstants.au3> #include <EditConstants.au3> #include <GUIEdit.au3> #include <ScrollBarConstants.au3> #include <Array.au3> Global Const $APF_ALLOWMULTILINE = 1 Global Const $APF_RIGHTALIGN = 6 Global Const $APF_RIGHTALIGNCOL = 2 Global Const $APF_RIGHTALIGNDATA = 4 Global Const $APF_PRINTROWNUM = 8 Global Const $APF_DEFAULT = $APF_PRINTROWNUM Global $PID[9], $FocusAvailable = True, $previousEditMsg Global $PID_waiting[0][2], $logfile $logfile = "D:\MultiInstance\Logfiles\FrontEnd.txt" If FileExists($logfile) Then FileDelete($logfile) #Region ### START Koda GUI section ### Form= $hGui_1 = GUICreate("Instanzenmanager", 493, 1226, 1807, 93) $grpInst1 = GUICtrlCreateGroup(" 1 ", 8, 8, 233, 121) $btnPause01 = GUICtrlCreateCheckbox("Pause", 16, 64, 50, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $tbnStop01 = GUICtrlCreateCheckbox("Stop", 16, 96, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnMin01 = GUICtrlCreateCheckbox("Minimize", 72, 64, 66, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnWdh01 = GUICtrlCreateCheckbox("Restore", 144, 64, 90, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnStart01 = GUICtrlCreateCheckbox("Start", 16, 32, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) GUICtrlSetBkColor(-1, 0x00FF00) GUICtrlCreateGroup("", -99, -99, 1, 1) $grpInst3 = GUICtrlCreateGroup(" 3 ", 8, 136, 233, 121) $btnPause03 = GUICtrlCreateCheckbox("Pause", 16, 192, 50, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $tbnStop03 = GUICtrlCreateCheckbox("Stop", 16, 224, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnMin03 = GUICtrlCreateCheckbox("Minimize", 72, 192, 66, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnWdh03 = GUICtrlCreateCheckbox("Restore", 144, 192, 90, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnStart03 = GUICtrlCreateCheckbox("Start", 16, 160, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) GUICtrlSetBkColor(-1, 0x00FF00) GUICtrlCreateGroup("", -99, -99, 1, 1) $grpInst2 = GUICtrlCreateGroup(" 2 ", 248, 8, 233, 121) $btnPause02 = GUICtrlCreateCheckbox("Pause", 256, 64, 50, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $tbnStop02 = GUICtrlCreateCheckbox("Stop", 256, 96, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnMin02 = GUICtrlCreateCheckbox("Minimize", 312, 64, 66, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnWdh02 = GUICtrlCreateCheckbox("Restore", 384, 64, 90, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnStart02 = GUICtrlCreateCheckbox("Start", 256, 32, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) GUICtrlSetBkColor(-1, 0x00FF00) GUICtrlCreateGroup("", -99, -99, 1, 1) $grpInst4 = GUICtrlCreateGroup(" 4 ", 248, 136, 233, 121) $btnPause04 = GUICtrlCreateCheckbox("Pause", 256, 192, 50, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $tbnStop04 = GUICtrlCreateCheckbox("Stop", 256, 224, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnMin04 = GUICtrlCreateCheckbox("Minimize", 312, 192, 66, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnWdh04 = GUICtrlCreateCheckbox("Restore", 384, 192, 90, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnStart04 = GUICtrlCreateCheckbox("Start", 256, 160, 218, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) GUICtrlSetBkColor(-1, 0x00FF00) $Edit1 = GUICtrlCreateEdit("", 8, 720, 473, 497) $btnPauseAll = GUICtrlCreateCheckbox("Pause all", 8, 656, 474, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) $btnStopAll = GUICtrlCreateCheckbox("Stop all", 7, 688, 474, 25, BitOR($GUI_SS_DEFAULT_CHECKBOX, $BS_PUSHLIKE)) GUISetState(@SW_SHOW) #EndRegion ### END Koda GUI section ### While 1 CheckGuiMsg() FileWrite($logfile, @HOUR & ":" & @MIN & ":" & @SEC & "> " & "CheckGuiMsg" & @CRLF) CheckClientMessages() FileWrite($logfile, @HOUR & ":" & @MIN & ":" & @SEC & "> " & "CheckClientMessages" & @CRLF) WEnd Func CheckGuiMsg() $nMsg = GUIGetMsg() Switch $nMsg Case $GUI_EVENT_CLOSE Exit Case $btnStart01 AddTextToEdit("Starting Instance 1") $PID[0] = Run("D:\XVM05\Entwicklung_FilterTest_Multi_ToFileV001.exe 1", @ScriptDir, Default, 3) Case $btnStart02 AddTextToEdit("Starting Instance 2") $PID[1] = Run("D:\XVM05\Entwicklung_FilterTest_Multi_ToFileV001.exe 2", @ScriptDir, Default, 3) Case $btnStart03 AddTextToEdit("Starting Instance 3") $PID[2] = Run("D:\XVM05\Entwicklung_FilterTest_Multi_ToFileV001.exe 3", @ScriptDir, Default, 3) Case $btnStart04 AddTextToEdit("Starting Instance 4") $PID[3] = Run("D:\XVM05\Entwicklung_FilterTest_Multi_ToFileV001.exe 4", @ScriptDir, Default, 3) Case $btnPause01 AddTextToEdit("Send Pause to Instance 1") StdinWrite($PID[0], "Pause") Case $btnPause02 StdinWrite($PID[1], "Pause") Case $btnPause03 StdinWrite($PID[2], "Pause") Case $btnPause04 StdinWrite($PID[3], "Pause") Case $tbnStop01 StdinWrite($PID[0], "Stop") Case $tbnStop02 StdinWrite($PID[1], "Stop") Case $tbnStop03 StdinWrite($PID[2], "Stop") Case $tbnStop04 StdinWrite($PID[3], "Stop") Case $btnPauseAll AddTextToEdit(@CRLF & "************Pause All not yet implemented**************" & @CRLF) Case $btnStopAll AddTextToEdit(@CRLF & "************Stop All not yet implemented***************" & @CRLF) EndSwitch EndFunc ;==>CheckGuiMsg Func CheckClientMessages() For $i = 0 To 3 FileWrite($logfile, @HOUR & ":" & @MIN & ":" & @SEC & "> " & $i & @CRLF) Local $a = TimerInit() $p = $PID[$i] $streamRead = StdoutRead($p) If $streamRead <> "" Then Switch $streamRead Case StringInStr($streamRead, "Focus Needed") > 0 If $FocusAvailable Then $FocusAvailable = False StdinWrite($p, "Focus Granted") Else EndIf Case StringInStr($streamRead, "Release Focus") > 0 StdinWrite($p, "Release Focus Received") $FocusAvailable = True Case Else EndSwitch EndIf FileWrite($logfile, @HOUR & ":" & @MIN & ":" & @SEC & "> " & $i & " " & round(TimerDiff($a),2) & @CRLF) Next EndFunc ;==>CheckClientMessages Func AddTextToEdit($text) If $previousEditMsg <> $text Then $previousEditMsg = $text GUICtrlSetData($Edit1, GUICtrlRead($Edit1) & @YEAR & "." & @MON & "." & @MDAY & " - " & @HOUR & ":" & @MIN & ":" & @SEC & "> " & $text & @CRLF) _GUICtrlEdit_Scroll($Edit1, $SB_SCROLLCARET) EndIf EndFunc ;==>AddTextToEdit



      My issue now is that the mechanism with with StdoutRead and StdinWrite is not efficient at all. The more instances I start the slower it gets. This is not just a bit slower (like a fraction of a second), but to the degree that the front end is not responding at all any longer (with 3 instances handling).

      So my questions are:

      1.       Is there a flaw in my implementation with StdoutRead and StdinWrite? (note that all works fine with 1 and also (slower) with 2 instances running) but actually breaks down with 3 instances running.

      2.       Can I optimize the currently used implementation so that I can control 30+ instances?

      3.       What other implementation do you see suitable for this approach?

      a.       I have already tried it with communication through files but observed that this is not sufficiently reliable with multiple instances.

      b.       Is Named Pipes a more performant approach (I am a bit scared of the effort to learn and implement this)

      c.       Any other method?


       
      Many thanks in advance

      -dubi





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