listening to external function calls

Similar Questions

• How to call external functions without one. DLL (just using a.) H and. LIB file)?

  Hi all

  in fact, I am facing difficulties on how to get an external function is called in CVI (Version 2009).

  I was delivered with a. H file and a. LIB file to call an external function of my project CVI. The. H file looks like this:

  void exportedFunction(double *parameter);
  

  As far as I know, the external function was written with MS Visual C++ 6.

  So, I tried to link statically to the al extern like this function:

  -Add the. H file and the. LIB file to the CVI project

  -#include the. Folder H when I needed to call the external function

  -do the external function call

  During construction I get unresolved CVI external function call error, so this seems not work.

  I did some research autour and stood up with two possible problems. Maybe one of you can help me get a bit further and do work things out.

  (1) of the code of the 'real' function inside the DLL file that was not delivered to me. Or y at - it a way to get concrete results (calling external functions) with just one. H and a. LIB file (with none. Included DLL file)?

  (2) the external function does not export according to the rules of Style 'C '. The signature of the function in the. H file shows some things don't like

  extern "C" __declspec(dllexport) void __stdcall ...
  

  Or maybe it's a combination of these two issues (missing. DLL + bad export style function)?

  I guess I could get around the incorrect service export style when I managed to write a wrapper around the original function that actually uses Style C exporters. But I guess I need to the. DLL file for this test as well.

  Thank you very much for your answers.

  Best regards

  Bernd

  There is no need for the stuff of dllexport. There is also the option of a static library without any DLL.  But the "extern"C"' is essential, because it forces the C++ compiler, which was probably used to compile the library to use the C calling convention.

  If you are unable to ask the library vendor to provide a version that was compiled using C calling convention is the way to write a wrapper with VC ++ 6 around this library that functions using C calling convertion reexports. Something like

  extern 'C' myfunc1 type0 (type1 arg1,...) {

  Back to func1 (arg1,...);

  }

  for each function, you must use.

  BTW. "unresolved symbol" is the error message from the linker, you can expect if you try to bind the C code against a generation of library with the C++ calling convention.

• MuseJSAssert: Selector function call error: TypeError: a.watch is not a function

  I am building a website in adobe muse and I downloaded on my servers from an external source no Muse.   But whem I look for my Web page in any browser being produced the following error: MuseJSAssert: selector function call error: TypeError: a.watch is not a function.   I appreciate if someone can help me with this error because I Don t find a solution on the internet (google).      I have download the catalyst activity of Muse and everything is OK, but whem I download an error on server FTP of Muse more is coming.   I don´nt understand and I need your help relly.

  Thank you for all

  
  

  NOTE: the web is:

  In BusinessCatalyst: home

  
  

  In 00webhost: home

  Please, try the suggestions mentioned in these discussions:

  https://forums.Adobe.com/thread/1313964

  MuseJSAssert: Error calling the function switch: TypeError: $(...). museMenu is not a function

  https://forums.Adobe.com/message/4991534

  Thank you

  Sanjit

• nested to perform DML and wait function call commit

  Hello world
  
  I would like to make a few DML - one insert statement, to be precise - in function and have the function and then return the number keys on the newly added row. I call this function from a different context and woud then be able to use the newly added data to do something.
  
  Specifically, what I do is the following: I have a graph composed of triplets source, destination and distance in a picture. A user should now be able to
  
  1.) add a node "A" to the curve.
  2.) add a node 'B' to the chart
  (3.) to get the shortest path from A to B in the graphs.
  
  I have an internal function

  function INSERT_NEW_NODE(node_in in sdo_geometry, graph_in in integer) return integer
  is  
  
  pragma autonomous_transaction;
  
  cursor node_cur is  
    select 
        source,
        source_geom
    from graph  
  ;
      
  cursor edge_cur is
      select
          source,
          destination,
          distance,
          edge_geom
      from
        graph
      where
        sdo_geom.relate(edge_geom, 'anyinteract', node_in, .005) = 'TRUE';
  
  begin
  
    -- check if identical with any existing node
    for node_rec in node_cur loop  
      if sdo_geom.relate(node_rec.source_geom, 'EQUAL', node_in, .005) = 'EQUAL' then
        return node_rec.source;
      end if;
    end loop;    
    
    -- get edges
    for edge_rec in edge_cur loop
       -- new_node-->edge.destination and vice versa
      insert into
        graph
        (
          ID,
          GRAPH,
          SOURCE,
          DESTINATION,
          DISTANCE,
          SOURCE_GEOM,
          DESTINATION_GEOM,
          EDGE_GEOM
        )
      values
      (
        graph_id_seq.nextval, --id
        graph_in, --graph
        morton(node_in.sdo_point.x, node_in.sdo_point.y),  -- source morton key
        edge_rec.source, -- destination morton key
        sdo_geom.sdo_distance(edge_rec.source_geom_marl2000, node_in, .005, 'unit=M'), -- distance
        node_in, -- source geom
        edge_rec.source_geom,  -- dest geom
        split_line(edge_rec.edge_geom_marl2000, node_in).segment1 -- edge geom
      );
      commit;
      --new_node-->edge.source and vice versa
      insert into
        gl_graph
        (
          ID,
          GRAPH,
          SOURCE,
          DESTINATION,
          DISTANCE,
          SOURCE_GEOM,
          DESTINATION_GEOM,
          EDGE_GEOM
        )
      values
      (
        graph_id_seq.nextval, --id
        graph_in, --graph
        edge_rec.source, -- source morton key
        morton(node_in.sdo_point.x, node_in.sdo_point.y), -- destination morton key
        sdo_geom.sdo_distance(edge_rec.source_geom, node_in, .005, 'unit=M'), -- distance
        edge_rec.source_geom,  -- source geom
        node_in, -- dest geom
        split_line(edge_rec.edge_geom, node_in).segment2 -- edge geom
      );
      commit;
    end loop
    ;
   
    return(morton(node_in.sdo_point.x, node_in.sdo_point.y));
    
  end insert_new_node;

  adding new nodes to the chart, links, calculates distances etc. and returns a handle to the newly added node. I call this function twice function, external

  function get_path (line_in in sdo_geometry, graph_in in integer) return sdo_geometry
  is  
  
  source number;
  destination number;
  source_geom mdsys.sdo_geometry;
  destination_geom mdsys.sdo_geometry;
    
  begin
    
    source := insert_new_node(get_firstvertex(line_in), graph_in);
    destination := insert_new_node(get_lastvertex(line_in), graph_in);
   
    -- source := insert_new_node(get_firstvertex(line_in), graph_in);
    -- destination := insert_new_node(get_lastvertex(line_in), graph_in);
    
    return(get_path_geom(source, destination)); --returns a geometry which is the shortest path between source and destination
    
  end get_path;

  ; and I think thatI have to use autonomous transaction in the internal function, so that the external function can see any changes made by the inside one. However, it doesn't work, when I call twice the function internal (i.e. remove the comment panels in front of the last two lines of code just before the return statement in the outer function.)
  
  So here are my questions: 1) why should I call the function twice to see the complete transaction? (and 2.) How can I avoid this? Is it possible to wait for the execution of the return statement in the internal function that the insert is committed and can be seen by the external function?
  
  See you soon!

  OK, here's the solution: the external function get_path() calls a function get_path_geom(source, destination) , who himself called something like table(dijkstra(source, destination)) , (omitted by me because only carefully tested and ok, my bad!) which makes the job of finding the shortest path and returns an array in pipeline. It turns out that this feature for some reason is not the scope of the external function and therefore does not see the transaction committed themselves on the graphics table. After you change the dijkstra() -function to return a list instead of a table, all works all of a sudden.

  If this question has been answered; I would still like to know why the table function does not have the same scope as the rest of the transaction.

  Edit: removed misleading blame on application external and inserted a correct solution.

• Tecra A9 tcrdmain.exe Vista Runtime error R6025 pure virtual function call

  At the start of Vista, I get the following runtime error:

  Program c:\program files\toshiba\flashcards\tcrdmain.exe

  + R6025

  + pure virtual function call.

  Concerning

  Friend Nel

  Hello

  I see that this error is due to the flashcards\tcrdmain.exe.
  This flashcard application belongs to the Toshiba Vista Package added value and I think you should try to reinstall this package again.

  First, he must remove the old system VAP. Download the most recent PPV from the European driver Toshiba page, then reinstall it.

  Good luck

• XNET Config read to fill in when a certain arbid is received (i.e. return of function call when the msg is received)

  The API XNET-CAN allows to hardware configuration such that a call to read the framework/signal does not return until the message is received (no need to query the buffer, call to the function is as an event... function returns when a message is received) or if a time-out occurs).  I don't really want to query for data, unless I absolutely have to.  My plan is to have parallel code to wait for a specific message to receive and respond (should be very fast!) whil a different loop receives all other executives.

  A time-out of the reading function call would work pretty good, but it doesn't seem to work (see extracts attached).  The value of timeout only seems to work (no error property) is a value of 0 seconds.

  Thank you

  Todd

  Change of a single point of session for a queued session.

• How does the library function call Labview? Can I emulate using C++?

  Hi all. I recently finished writing a dll CUDA for LabView, and now I'm in the steps of optimization of code, memory management, etc. BUT since my code depends on the entries of Labview (lots of data under types of specific data as table manages and Clusters labview) I can't use the CUDA Profiler or the Profiler VC ++ on the DLL. What I intend to do runs labview and then out of all data entry for the DLL in a binary file and then add an additional function in my code that will read in the binary file, allocate and assign variables to their respective positions, and then call the specific DLL function in Labview. In the end, this miniature function will act as the library function call to my specific group of data entries.

  In any case, I started to make this purchase all my data entry of cluster and it comes out in a binary file. And then I started the initialization of the handles of labview, allocating memory and begins to write the binary data in the memory and it works for integers (ints), floats, etc., but I'm confused on how it works with table handles!

  Some examples of code:

  Sets the Handle for table 1 d for INT
  
  typedef struct {}
  
  	int length;
  
  	int val [1];
  
  		to access the value in a row-online val [Online]
  
  } Array1dInt, * Array1dIntHandle;
  
  int main()
  
  {
  
  	Array1dIntHandle x = new Array1dInt *;
  
  	(* x) = new Array1dInt;
  ifstream file ('TESTDATAIN.dat', ios: in | ios::binary);
  If (file.is_open ())
  
  	{
  
  		file ((char *) &(*x)-> length, sizeof;)
  
  		file ((char *) &(*x)-> val [0], sizeof (int) *(*x)-> length);
  LabviewSpecificFunction (x);
  
  		leader. Close();
  
  	} else
  
  	{
  
  		< "file="" did="" not="" open!"=""><>
  
  	}
  
  	return 0;
  
  }
  __declspec(dllexport) LabviewSpecificFunction (Array1dIntHandle x)
  
  {
  
  ...
  
  }

  However, my program crashes when the table is nominally big, and it is expected, because if we look at the Array1dHandle, it has allocated only enough memory to 1 item of value! YET, somehow, in its magical and mysterious labview is capable of making val [1] be val [HOWEVERMANYYOUWANT], even if C++ 101 says that val [1] is a constant pointer, and even if I dynamically allocated memory another somwhere, I would never be able to put these data in this round!

  Can you explain, or maybe even write example on how I can fool my program into thinking that the binary code comes from labview, so I can then run my program independent of allowing me to profile the functions inside labview?

  I hope that this question is clear and my sample code is also clear, but I'm happy to answer any questions that relate to this.

  Thank you all!

  I think that I thought about it.

  Array1dIntHandle x = new Array1dInt *;
  int tempsize;
  
  file ((char *) & tempsize, sizeof;)
  
  (* x) = (Array1dInt *) malloc (sizeof (int) + sizeof (int) * tempsize);
  
  (* x)-> length = tempsize;
  
  file ((char *) &(*x)-> val [0], sizeof (int) *(*x)-> length);

  Well enough, you will need to make the handle, and then make a new Array1dInt * for him, then read in the length of the array in a temporary variable. Then use this information to then malloc memoery quantity you need for the table and pass this place on the handle. Now the handle will point to the size of the memory and you will be able to access the memory in the format, you've done the handle. Badabing badaboom

• Make sure that wire you all the inputs and outputs of your node library function call?

  This document says "make sure that wire you all the inputs and outputs of your node library function call.

  http://digital.NI.com/public.nsf/WebSearch/7253D2F0D91F68058625752F005AB672?OpenDocument&submitted&&...

  But all the terminals on the right side of the call library node considered "outputs" referred to in the foregoing statement?

  This same document continues to show the right way to allocate memory with this illustration and in the illustration, the right "outputs" are left without junctions.

  

  Am I right in assuming that the only terminals that count as outputs, those who use the code of the DLL (modify) as output?  If it is true, then all other terminals output associated with the values entered alone so don't really account as outputs, correct?

  In the parameter call-library configuration screen there is a "Constant" check box and the help that he wrote "indicates whether the parameter is a constant."  What is this box? for me in the setup of the DLL call

  Finally, assuming that a call from the DLL that is supposed to write in these five outputs, is it legitimate to use constants like this to book a space of memory for the output values?

  

  How about if local variables associated with the output terminals are used instead?

  

  Despite the linked document, it is necessary to connect the corresponding entry for simple scalar output parameters (for example a digital). LabVIEW automatically allocate memory for them. If you do not want the entries for all the output wire anyway, there should not be no difference between a constant and a local variable; I would use a constant to avoid useless local variables.

  For settings that are only entries, there is not need to connect the outlet side. It's a bit simplistic since all parameters are entered only and get one result (other than the return value), you pass a memory address and modify the content to this address, but LabVIEW manages this dereferencing pointer for you. If you want to really get into the details, learn more about pointers in C.

  The "Constant" check box acts as the qualifier "const" on a c function parameter. It tells the compiler that the function you are calling will not change this setting. If you call a function prototype includes a const parameter, then you must mark this as a constant parameter when you configure the call library function node. Otherwise, I wouldn't worry on this subject.

• Lack of external function DAQ channel read

  Hello

  I did a few installers to share on the network variables, one is based at DAQmx readings of analog channels use modules of simulations and the second donkey receives variables shared these radings... I thought it was pretty good, because I have the main application (channels read and share variables) in my main PC (which has istalled LabVIEW 2012) and the other track in a regular PC (no software OR installed until my Installer Act) and it worked fine. However, I installed the main application in the regular PC and I got an error stating: lack of external function DAQmx read single sample DLB... I guess I should include in my Installer features on DAQmx but I Don t know which ones to avoid this error and be able to install my apps in any PC... Thanks I await your advice!

  Well, I found the solution...

  I've just included confiuration NI DAQmx MAX support to my app Installer and I solved the problem...

• Questions MathScript Matlab function calls

  I have a question about the m-script function call (MATLAB) in Mathscript Labivew 2009. I have attached my buggy vi for an example:

  1. I called a function 'remodel (Sigma0, [O O Q M])"in Mathscript, it gave me a syntax error, but not in Matlab R2009b. I guess that it does not tolerate a great deal of input parameters. Any idea as how use the reshape feature in Mathscript?

  2. Another problem is that I've defined a function m-script with 2 parameters, in Matlab, I can call the function with a single parameter provided, however in Mathscript, system reports error if I only provided 1 parameter to a function of 2 parameters. Any idea as how to cope with this problem?

  Because I have a lot of code in the format m-script, I don't want to rewrite a lot of new code.

  Thanks for any help.

  Hi aggressor.

  Indeed there is a small difference in the matlab function and labview mathscript reshape function reshape. The difference is that Matlab is considered always any 2D array from the perspective of lines... where LabView considered from the perspective of columns... that is, if a table 2D likeX = [has and b, c and d] is here and the (x, 1, 4) reshape in labview will give out like a, c, b, d in an array, matlab, the output will be has b, c, d in a table.

  And in Labview syntax you gave will certainly give a syntax error. Please visit the labview syntax help.

  Thank you and best regards,

  srikrishnaNF

• How to use the node function call library for a function in the dll with the data SUB type

  Hi all

  I would ask for your kind help

  I am facing a problem with the call library node.

  I have a C++ (stdcall) function, which has Sub as data type

  XXXX error code (hwnd, lid, getValue, * Sub data1, * Sub data2)

  data1 and data2 types are constantly changing based on the value of 'getValue '.

  Mainly I can use the call library node several times and adapt each node according to the types of data data1, data2 and extract the values and use in the code. Here is no question. Real question is:

  My question:

  How can I use a node of library time call and make a case according to the 'getvalue', who will control the data1, data2 data type. Here I really seeking solutions.

  My tests:

  I used varaints as entry to the libray call node of the data1, data2 and selected parameters in the call libraby node as "Adapt to type. Here labview just crashed.

  I appreciate your suggestions to feedbackand.

  Thank you

  Karine

  You must allocate enough space for data1 and data2, and then pass a pointer to this space. An easy way to do this is the function to initialize table. Set the U8 type and size for the number of bytes required. Pass this array to the function as a pointer of table data.

  After the function call returns, you need to extract the data in the table. You can do it manually, but a simple approach is to use the array of bytes to a string. Then, in a housing structure, use Unflatten chain to convert the string to the correct data type. This method also converts the "endianness" which will be probably necessary; Be sure to only set all entries for unflatten correctly.

• How to extract a macro function call arguments

  Hi all

  I need help related to Macros in C.

  This is my code:

  #ifndef checkTrace
  #define checkTrace (CAFC) if (1) {printf ("function called checkTrace is :") ;}
  #endif

  I am looking for is:

  Suppose that is called checkTrace (getchar ()); I want to print 'GetChar () is called from checkTrace macro.

  Like this whatever the button func called by the macro checkTrace, I want to print the message as above mentioning the button func called by checkTrace()

  Any body let me know how I can do this in CVI?

  Any help will be greatly appreciated.

  Thank you

  Herald

  I think what you need is the operator "stringification": #.

  Check this box:

  #define checkTrace (CAFC) if (1) {printf ("function called checkTrace is: ' %s", #fCall) ;}}

  checkTrace (getchar ())

• Function calls multithreaded suddenly causing blockages

  I'm having a problem with function calls from multiple threads. There are two threads that everyone calls a function called save_program, including a DDCChannelHandleGroup and and a certain structure "show pulse" moved. The problem I have is that after that I called him save_program of one of the sons, it crashes when I try to call from the other thread. There are three contexts for this - two in the main thread and the other in the thread of data acquisition.

  If I call the save_program of one of the contexts in the main thread, the program crashes when I try to call it in the thread for the acquisition of data and vice versa. No problem since the two contexts in the same thread. I put a breakpoint in the function call and the first part of the executable code in save_program (declaration of variable initialized to NULL), and the program freezes between these two breakpoints. I checked and always executed entirely complete in each of the threads AND the call of CmtExitThreadPoolThread() also runs very well. I also locked up all instances of save_program in CmtGetLock/CmtReleaseLock calls without success. Oddly, these calls used to cause no problems with the exact configuration of multithreading even. I don't know what has changed.

  Hi PaulGanssle,

  It is very possible that you have already encountered a problem experienced in LabWindows/CVI where transactions must be completed before calling SaveFile.  I have included a link below that talks a little more about this problem.

  http://zone.NI.com/DevZone/CDA/tut/p/ID/12323#281013_by_Category

  It is a question that has been reported and is managed by R & D.  From now on, it is not a fix available but I hope we can find a work around that will work for your application.

  Please let me know if you have any other questions.

  Kind regards

  Kyle S

• Writing DAQmx invoke node leads to a runtime error (R6025 - pure virtual function call)

  I have a request in which a Subvi DAQmx writing calls calling node (shift of writing and reading NumChans).

  When I launch LabVIEW and the main VI a first run, everything works fine. When I run a second time, LabVIEW crashes with a runtime to Scripture DAQmx error call node:
  R6025 - pure virtual function call

  The LabVIEW failure log file contains the following lines:
  c:\builds\penguin\labview\branches\Saturn\dev\source\compiler\allocsup.cpp(662): DWarn: dataspace moved running!
  $Id: //labview/branches/Saturn/dev/source/compiler/allocsup.cpp#18 $

  Anyone has any idea how this accident could be avoided?

  Problem solved: we have just removed the line NumChan (read) from the node to invoke and readded it again. Now, it works fine.

• Write failed with getting Sonic error R6025-Pure Virtual Function Call

  After midway to burn a DVD, Sonic fails and know that it is a R6025 Pure virtual function call and refers to commonfiles\sonicshared\sonciecentral\main\mediahub.exe.  I had several problems with this program. Is there a way to remove it and then reload it?  I don't have a disk for it.  Thank you

  Hello cmd_078m,

  Where you installed the program Sonic of origin? You can uninstall it, but it will remove the program and you will need the original media to reinstall.

  You can check with Sonic for replacement disks or you can install any other CD burning software.

  Thank you

  Marilyn