Timeout on a call to the DLL

Similar Questions

• LabVIEW crashes after the call to the DLL

  Hi all

  I'm working on writing a wrapper for a dll. The call to the dll works fine a returns the appropriate values, but as soon as I close the VI dev LabVIEW environment crashes. Any help to avoid the same. I've been through a lot of posts and I tried varying the types of data sent to the dll, but again it gets crashed.

  the dll function that I use is the prototype (with the calling convention of type C)

  int nomfonction (Struct * cfg, UCHAR dNumber, UCHAR hTYPE)

  The varables UCHAR I'm passing as of 8-bit unsigned integers.

  For the structure, I did a cluster and pass with adapted to the Type and handles.

  The DLL is running very well and the VI stops, too, but as soon as I try to close the dev environment VI crashes. Help, please.

  Thank you.

  It is always possible that there is a bug in your DLL, or you're a failure calling a function in the DLL that is required in order to properly clean. The problem is perhaps not the way you have set up the call library function node.

  If you post: your VI; the header file that defines the structure of the cfg and the function prototype; and all the documentation on the function, so we can tell you if it is properly configured. Without this information there is little we can do.

• Node call within the DLL run-time library

  Hello!

  Is it possible to call a DLL function call library function node?

  I mean starting with first COLD LAKE that runs the local function of the DLL Function1() and Function1 runs second CLFN2 and passes the data to LV?

  
  

• Bug: Call from the DLL Windows 7 to disable the monitor message block 10.0f2 LabVIEW

  Hello

  I wanted to connect this bug on the forum. I already connected this with the support of the United Kingdom NOR: CAR # 286873

  I was trying to find a way to turn off an LCD laptop during the measurements. I tried to reproduce this

  http://codereflect.com/2009/04/03/how-to-programmatically-turn-onoff-your-monitor/

  who uses windows messaging.

  I found the joint monitor - 1(vi) somewhere on the forum that seems to of the foregoing. However when I run the VI it blocks 10.f2 LabVIEW on Windows 7 32 bit.

  see you soon

  David

  take the stdcall calling convention

• Call any thread DLLs the application crashes

  I have a built in 2015-labview application that acquires spectra of 6 spectrometers via an external dll. The dll triggers an event in labview when data is ready to be pulled from the spectrometers. Since this event, I am running a reentry no void / vi which contains a node function to retrieve the data, that are configured to run in any thread, as it gives a drastic improvement of performance as apposed to run in the UI thread.

  However this can slow down the application crash with a message from windows like the following journal:

  Name of the failing application: axiom 2.0.exe, version: 1.0.0.82, time stamp: 0x5581a6b7
  The failed module name: lvrt.dll, version: 15.0.0.4024, time stamp: 0x5581ac03
  Exception code: 0xc0000005
  Offset: 0x0000000000bec7c0
  ID of the process failed: 0x15c0
  Start time of application vulnerabilities: 0x01d11e6face9febd
  The failing application path: C:\Axiom 2.0\builds\Axiom 2.0\Axiom 2.0.exe
  Path of the failing module: C:\Program NIUninstaller Instruments\Shared\LabVIEW Run-Time\2015\lvrt.dll
  Report ID: 7d4ef3a8-8a91-11e5-94e9-90b11c894ef8

  I don't know if the dll is said to be thread safe or not. Also I do not understand how this causes a problem anyway since it is the only node that accesses the dll at the time, and each of the 6 spectrometers are interviewed in order?

  Is there anyway that I can still enjoy the benefits that the call of any thread dll provides without causing my application crash.

  An example of the increase in performance, it's that I can query the spectrometer from 6 to 70-80 Hz when configured to run in any thread, as opposed to a simple 10 Hz when the Run value in the UI thread.

  Thank you

  Jimmy01 wrote:

  I don't know if the dll is said to be thread safe or not. Also I do not understand how this causes a problem anyway since it is the only node that accesses the dll at the time, and each of the 6 spectrometers are interviewed in order?

  Is there anyway that I can still enjoy the benefits that the call of any thread dll provides without causing my application crash.

  Looks like that the DLL is not thread-safe. If you do not run in the UI thread, there is no guarantee that the DLL will be always called from the same thread, even if you only call it in one no reentrante Subvi. By default, LabVIEW allocates multiple threads by the enforcement system, with the exception of the user interface. If the DLL stores certain information of one call to the other, this context can be lost when run in a different thread.

  Here's a thread that provides two possible solutions; a wrapper DLL is required, use the other the utility 'threadconfig' (or the corresponding INI file settings) to force a subsystem of a thread executing unique http://forums.ni.com/t5/LabVIEW/Force-DLLs-to-tun-in-the-same-thread-expect-the-UI-Thread/td-p/11438...

  Another option would be to put the call to the DLL in a timed loop that runs constantly, and you can use a queue or the notifier to pass data to. A timed loop runs in a single dedicated thread, so I think it will work.

• Adapter DLL: Name of the function change & params without unloading of the DLL

  Hello

  I use teststand adapters API to dynamically build a DLL call step. Each dll function is called through this subsequence "DLL Manager."

  Tried 2 methods (here is a summary of the code):

  1 ActiveX as follows:

  CommonCModule.ModulePath = myDllpath

  CommonCModule.FunctionName = myFunc (Note: this call unload the DLL previously loaded)

  Module-> LoadPrototype

  (to set the params)

  2 steps statement:

  RunState.Sequence.Main ["Call DLL function']. TS. SData.Call.LibPath = myDllpath

  RunState.Sequence.Main ["Call DLL function']. TS. SData.Call.Func = myFunc (Note: this is a step, but the info seems not be updated-online the new feature is called not properly)

  Module-> LoadPrototype

  (to set the params)

  The two methods is exactly the same behavior, but good for the 1st function I call a work or if I dump the dll after the execute step.

  However, is there a way to use these steps (or other) at stage configuration, but without unloading the DLL between each call. In my test sequence, I must OpenConnection with the object to be measured before starting my orders, as well as the dll should not be discharged to keep the connection open...

  for example

  (1) OpenConnection()-online this function takes the handle of communication with the device

  (2) myCommand1()

  (3) myCommand2()

  (4) CloseConnection()

  Thank you for the help

  C.

  If I understand your question, there are several ways to solve the problem. The easiest is to place a call to the dll before your loop that you never change programmatically. This step will then keep the loaded dll (if any stage that uses a dll is loaded, then the dll remains loaded. A dll is unloaded when all the steps that use it are unloaded.). Another option is to have just internally your call to the dll LoadLibrary on itself so that it is never unloaded. You then leave the process to unload the dll well. Another option is to add the code directly to the sequence that explicitly, charge and discharge your dll with the Win32 API LoadLibrary and FreeLibrary.

  That said, what you describe, if I understand correctly, looks like a very unusual use of TestStand. Looks like you use TestStand as a dll calling rather than as a sequencer and write your own sequencer above it instead. Have you thought to generate an entire sequence to run in teststand, rather than a step at a time? Basically, convert your test script in a TestStand sequence.

  Hope this helps,

  -Doug

• Problem setting up base appeal of the DLL (win32 API?) for the control of coherent laser Verdi-G

  I'm trying to set up a call to the DLL to control a coherent laser Verdi-G.

  I can't know the right way to set up calls. In the attached Demo.cpp, there is a function "RunTests". It's kinda my final goal. Functions send some commands to query the device. I'm going to need to send commands like this (along with several others, some of which take arguments... but I think I can understand that on mine)

  My problem is getting started. I can't even talk about the device. I tried a few different ways to set up the call to the DLL, but they have always will plant the computer. I don't know if I am missing a few parts such as the initialization of a method to speak via USB or other parts.

  I added my own .vi tries as well as some of the .c, the .cpp & the .h files associated provided with laser control software. I may have missed the relevant records; I'm happy to add them if someone sees a necessary file / referenced.

  Any help would be appreciated.

  Thanks for your time!

  Turns out I missed the included .vi which belongs to install them the package. I was looking directly on their CD.

  I would mark this closed if I saw a button for this?

• Call Java DAQmx.dll: Y at - it a new version of the DAQmx.dll NET c# for CLR 4.0 library

  I need to use the API of NET c# in a java program, so I tried to use Jni4net library to fill the dll in Java. I get errors however, because the version of daqmx.dll that I have been built against CLR 2.0.50727. Is there a version of the dll for CLR 4.0 (corresponding to .NET 4.0 or higher)?

  If someone know another way to call the java daqmx.dll?

  Hello

  I eventually found the version I had to work.

  I have the DAQmx.dll assembly. I got an old software project developed for the device, I'm working on that. I guess that the original developer obtained from the disk of National Instruments.

  Thank you

• Get the 1097 error when trying to call a Labview DLL

  I had to write a wrapper DLL to use some functions in the DLL to a third party, and I'm having a few problems. I created an executable to test my code and it works fine, but when I try to execute the same function in the DLL that I created in Labview, I get error 1097. I read through most of the posts on this forum about this issue, but none of the proposed solutions are working for me. I'm sure this isn't a question of transfer settings to COLD LAKE because I changed the function so it only accepts a single entry (a number he obtains from a Subvi, which came from the third-party DLL, this entry is working with a bunch of other functions, so I don't think that is the question).

  I have attached the C code that creates the wrapper, but I don't know how it is useful without familiarity with the functions of the original DLL. I hope that someone can spot something basic I am out of my code, but please let me know if I need to call something else.

  I use a Labview 32 bit version 2012 on a 64-bit Windows 7 computer.

  Thanks in advance for any help!

  You should read the documentation on LoadLibrary() and understand. Essentially if you provide a full path to LoadLibrary() the DLL MUST be present at this place so that LoadLibrary() will succeed. If you pass only the name Windows DLL will ONLY search in these places:

  (1) if the module (the DLL) is already loaded it will return a handle to the loaded module and increment its reference count

  (2) if the referencing module contains a manifest (either incorporated into the image module or in a separate manifest file in the same directory as the executablemodule) specyfying a version number for this DLL will load this DLL with this version of the SxS (side by side) location and failure if it is not present

  (3) if the executable load contains a manifest (either incorporated in the executable file or in a separate manifest file in the same directory as the executable file) number specyfying a version for this DLL, it will load this DLL with this version of the location of SxS (side by side) and fail if it is not present

  (4) it will search for the DLL in the same directory as the directory where the current image of the process is loaded. It is NOT the directory of the DLL loading the DLL, BUT the directory where the EXE file from which the process was created.

  (5) in the system directory

  (6) in the Windows directory

  (7) any directory in the PATH environment variable

  (8) the path of current directory which is a location managed by windows by process and changed the two explicitedly when the application calls the API SetCurrentDirectory() but also implicitedly by things like the file selection dialog whenever it is rejected by other means than the undo operation.

  Essentially putting your dependend DLL in the same directory as the wrapper DLL does NOT work when you use the name of the DLL only UNLESS you place the two DLLs in the same directory as your executable file. If you don't want this restriction and want to be able to move these modules together in different directories, you don't have to create the correct path in your wrapper to LoadLibrary(). Basically, you must have the code to determine the location of your DLL wrapper path and then strip her own name and add the DLL name wrapped in it and then move to the LoadLibrary().

  There are several ways to determine the path of the current module. The simplest if you don't mind having the name hard-coded in your code DLL would be to ask GetModuleFileName (GetModuleHandle ("yourDLLname"), buffer, size).

• The DLL call fails when DLL uses a wide range

  I call a C++ dll in LabVIEW 32-bit on Windows 7. I kept getting error 1097 and finally understood it is because the dll uses two large paintings of 5 MB each. The tables are initialized in the constructor of an object, malloc is not used, or whatever it is. If I do the smaller berries, then everything works fine.

  The problem is not difficult to work around, now that I know what is the cause, but can someone tell me why a dll using a lot of memory would be a problem? I feel that 10 MB is really a lot of memory to use on modern computers.

  OK, you can test the appeal of the DLL in a Visual Studio test harness?

  In addition, in case you haven't seen another 'DLL error 1097' son type, here are a few. The cause of 1097 in your case can be illuminated by a multitude of courses of troubleshooting:

  Call dll error 1097

  Error code coming 1097 in DLL call

  error 1097 after the call dll function that allocates memory inside

  1097 error in the transition from table from C++ DLL for LabView (seems very relevant, although long)

  I know there are a lot of reading, but there is a good chance that the magic trick is in one of these threads already. We will ride on the shoulders of their work.

• When I use the library function node call in real time, is loaded only once for all or load the DLL whenever it is called?

  When I use the library function node call in real time, is loaded only once for all or load the DLL every time when it is called?

  I have a critical application in real time, in which I use a piece of DLL function developed in C++.  It is ok?  Make sure any senior developer?

  Thank you in advance.

  The user interface thread is the thread that is used to update the user interface. It's slow. And it's supposed to be that way because humans are slow.

  The call library function node can be configured as this thread to use in the configuration for it dialog box. Please visit the LabVIEW documentation on how to do this.

• Loading of a DLL on RT: Missing Export "DecodePointer" "Kernel32.dll" and 7 error when calling the DLL

  Hi, I recently changed to Visual Studio 2010 and Windows 7 64-bit.

  I have an existing Office RT system running RT 2009.  This system calls a DLL that I already built using Visual Studio .net 2003 and Windows XP.

  Since I've recompiled the DLL I get an error 7 file not found error when I call the RT DLL, even if I simply replaced the old DLL with a new one in the file system so the path has not changed.

  I also noticed that the message on the screen connected to the RT system during startup:

  "achieveworldpeace.dll" load error: lack of export 'DecodePointer' of ' Kernel32.dll'.

  Any ideas on this problem?  It is perhaps as simple as a switch in the compiler?

  Thank you.

  I'm not sure it's a simple switch in the project settings in Visual C. The problem is clearly in the standard C runtime library that gets linked to your DLL and refers to exports of Windows which are not available on the RT system. Don't forget that the RT system is a limited Win32 API emulation.

  I usually avoid these problems using Visual C 6 to create DLLs for LabVIEW projects. The standard library of the C runtimes will not know what Windows API reference more recent exports because they have supported even under Win95. So unless your explicitedly reference code not supported RT APIs you wouldn't have problems. If you do not use the standard C file i/o functions and management of memory in your DLL functions, you can also try to link statically C runtime libraries in your DLL, or vice versa depending on what you have now. It may or may not work. Otherwise there is not much else but by using an earlier version of Visual Studio.

• a dll Win32 winspool call for the issue of the printer status

  Hello

  I apologize because I do not understand Win32.

  I for 2014 LabVIEW full development system and want to access the Win32 API.

  I am trying to write a function to determine if a printer is out of ink or offline for some reason any.

  I see that the MSDN Winspool library has the features I need.

  According to the MSDN Web site, the dll is Winspool.drv.

  https://msdn.Microsoft.com/en-us/library/Windows/desktop/dd162751 (v = vs. 85) .aspx

  I tried to do a call library function in LabVIEW, but it is the search for DLL and does not recognize the Winspool.drv

  It lie in the methods in LabVIEW to access the Winspool, or nobody knows what the correct dll (and location) I call is?

  Ultimately, what I want to do is open printer-> get jobs-> status of--> close printer.

  Seems simple enough.

  Thanks in advance for any advice.

  You use a 32-bit version or 64-bit LabVIEW? If you use the 32-bit version, you should not try to load the 64-bit version of the DLL. Surprisingly, the System32 directory is for 64-bit dll, and the SysWOW64 folder is for 32-bit dll. If you have installed the 32-bit version of LabVIEW, try SysWOW64 winspool.drv.

• Why the DLL function performed by call library node fails when the Vi is reopened?

  Development system

  OS: Windows XP

  LabVIEW: version 10.0

  DLL: Custom

  Compiler: Visual C++ 6.0

  Function prototype: __declspec (dllexport) const char * test (void)

  We have developed a DLL to use.  Compile the DLL itself.  The DLL includes a function test.  The test function validates the functional capabilities of the DLL.  I followed the examples online, and I used the tool to import shared library in LabVIEW.  The screw created use the call library node.

  When I create a VI by calling the function in the DLL test customized by using the call library node the VI runs the test DLL function flawlessly.  I close the VI.  When I re - open the VI and run it, I get an error code of the DLL.  However, if I go on the schema and define the path of the DLL in the library call Configuration node once again the VI then runs the test DLL function perfectly again.

  I have set the path of the DLL in the library call Configuration node everytime I open the VI.  The examples that I downloaded from the community don't require this.  What could be the missing DLL?  What Miss me?

  I solved the problem.

  I had create the DLL by using the following steps for VC 6.0:

  1. new project

  2. Select the Appwizard (DLL) MFC

  3. Select the regular DLLS using the MFC shared DLLS

  4 Yes for source file comments

  5 finishing

  The DLL must be on the VI search path.  The easiest way was to have the DLL in the same directory as the VI.

• How to call a DLL function that has need of an array initialized structures which can be written in by the DLL?

  I need to call the following function in a C DLL:

  __declspec (dllexport) int MSIL_EnumSpectrometers (SPECTROMETER_ID * spectrometers);

  where the only parameter is a pointer to:

  typedef struct
  {
  tank model [32];
  series char [32];
  Channel int;
  } SPECTROMETER_ID;

  Before LabVIEW 2011 I would use a CIN allocate the memory and call the function, but in LabVIEW 2011, the INC has been deleted and I have to use a library function node call instead. When I go to set the parameter, it seems that I need to set the type to "Adapt to the Type" and data for 'Pointer to data in table' Format, then pass an initialized array of SPECTROMETER_ID with the many elements he so the DLL can fill the table with data. (See the attached picture.) When I do that, however, it blocks LabVIEW desktop.  I guess it is because the DLL is corrupting the memory space of LabVIEW, but I don't see why, because I'm basically passing in a void pointer to an array initialized in the right size. Note that the first node of NSI returns the number of elements required in the table.  Anyone have any idea what I'm doing wrong here?

  In LabVIEW, when a table is in a cluster - cluster don't detain actually table but sort of a pointer that points to the table. If you need the cluster to contain 32 to 32 Add to the cluster. See the VI attached to how it's supposed to be done.