Allocation of memory ring LabVIEW animation photo

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• Call the allocation of memory function of library

  Hello

  I want to call a dll of LabVIEW and one of the entries expects a pointer to double (double *). I did things like that before and use create table to allocate memory in LabVIEW to pass to the dll. This time what is expected is a pointer to a unique double. Can I just wire a double digital scheme at the entrance or it will not really affect memory?

  ToeCutter wrote:

  I want to call a dll of LabVIEW and one of the entries expects a pointer to double (double *). I did things like that before and use create table to allocate memory in LabVIEW to pass to the dll. This time what is expected is a pointer to a unique double. Can I just wire a double digital scheme at the entrance or it will not really affect memory?

  It would be preferable to wire a single instead of a double, but other than that (Oops, misread "double single" as "single"), Yes, it will correctly allocate memory. You just configure the parameter as a double single from pointer.

• Allocation of memory - unlimited option resources

  Looking for assistance with a script that will run on all virtual machines and show where the unlimited option is checked/not checked for the allocation of memory resources.  Any help is appreciated.

  Thank you

  You can get a list of virtual machines and the setting of memory resource allocation with:

  Get-VM | `
  Get-VMResourceConfiguration | `
  Select-Object @{N="Name";E={(Get-View $_.vmid).name}},MemLimitMB
  

  If the value of MemLimitMB is - 1, this means unlimited.

  Best regards, Robert

• Allocation of memory for a class system (avoid new/delete)

  My plugin has been crashing a lot, but only under Windows. I realized that the culprit is in my code for the creation of a bitmap GDI + drawing.

  The code I use is:

  ...

  Bitmap image * tempImg = NULL;

  try {}

  tempImg = new Bitmap (width, height, bitmap_bytes_per_rowL, PixelFormat32bppPARGB, reinterpret_cast < BYTE * > (bitmap_dataP));

  } catch (A_long & e) {}

  Return PF_Err_OUT_OF_MEMORY;    Assuming that...

  }

  If (tempImg! = NULL) {}

  canvas = Graphics::FromImage (tempImg);

  delete tempImg;

  }

  In this case, bitmap_bytes_per_rowL has been calculated before, and bitmap_dataP refers to the memory correctly allocated (via host_new_handle()) where the drawing will happen. tempImg is an object Bitmap GDI + Windows, that is only used to create the object Graphics "canvas." Once it has achieved its objectives, it will be deleted.

  I'm 99% sure that it is the cause of my crashes. It crashes all the time and it is more likely when the code is compiled in release mode.

  So, I have two options:

  -Allocation of memory for the Bitmap object using host_new_handle (sizeof (Bitmap)), and lock up the handle to get a pointer to my bitmap object. Problem, it is, how to initialize, because I will no longer use the keyword "new"?

  -Create my Graphics 'canvas' object without starting by creating a Bitmap object. That would be my preferred method, but the only other way to create a Graphics object is via an HDC and HWND, neither of which I know how to access and then how do I associate my (real) memory of drawing?

  Thanks for the tips!

  Christian

  what you are looking for is called a 'new place '.

  Bitmap image * somePointer = new (someMemoryAlreadyAllocated) bitmap.

  http://StackOverflow.com/questions/222557/what-uses-are-there-for-placement-new

• Allocation of memory in ESXi 3.5 problem

  Hello

  Before I switched to using ESXi 3.5 to host my VM guest, I used VMware Server 1.0.6 to the guest virtual machines. However, I think that

  the VMServer could not allocate correct memory that I specified in the virtual machine settings, for example, I put 3 GB of memory to a guest

  OS, but I found that only 1200 MB of memory was allocated in the ohter handler.

  So I now use ESXi 3.5 to host 3 VMs, ESXi 3.5 host has 8 GB of memory, two of these VMs have the allocation of memory 1 800 MB and 4 GB.

  However, on ESXi console, I found that me, the 'use of memory of comments' are only 450MB and 778 MB only.

  It's really out of my expectation, it seems that the memory on the VMware product management is the same.

  Does anyone know how fix memory use such as ESXi comments will not control the dynamic memory allocation?

  In our case, it is not necessary to adjust the consumption of memory intelligently by ESXi from time to time.

  I have attached some screenshots for your reference to screen and hope that the screens are useful to explain the problem.

  Thank you for your kind attention,

  Raymond

  It is possble to use memory locking of operating system invited in a fixed allowance?

  Is called memory reserve.

  You can do this under settings of the computer virtual (tab "resources") or by using the list of resources.

  André

  * If you found this device or any other answer useful please consider awarding points for correct or helpful answers

• allocation of memory for the pointer in the dll

  Hello

  I am very new to LabVIEW and I was struggling with the third scheduled dll long enough. I am able to configure the device (but with a view of the insufficient resources error code), get the number of connected sensors and the ID of the sensor. But I can't receive data between the device and I think it might be the memory allocation problem.

  I use LabVIEW 2015 32-bit on Windows 10.

  This is the documentation provided by the seller, and the apdm_ctx_t seems to be a void pointer based on the API (typedef Sub apdm_ctx_t)

  APDM_EXPORT apdm_ctx_t apdm_ctx_allocate_new_context (void)
  Allocates memory a handful to be used by the libraries of the apdm.
  Returns
  Zero on success, zero otherwise

  Based on a previous post, I set up the return of the function above to be signed pointer size whole. And the following functions will receive this digital context and pass by value.

  In the attached png, the apdm_get_next_record requires a complicated structure. I have to do as a cluster and supply the function node (see figure).

  The sequence of the vi follows the Matlab code provided by the seller. I have no idea why the vi keeps returning the error code: no data received.

  Any thoughts would be great and I can give you more information if necessary. Thank you!

  Looking briefly at the provided code that I don't see glaring errors. Are you really sure that you do not have misinterprete all return as failuree values or maybe something in your actual System Setup prevents you to get the values you expect?

  You haven't really explained what you think you should get and what you get instead. The matlab example only also shows the use of apdm_ctx_autoconfigure_devices_and_accesspoint5() while you use apdm_ctx_autoconfigure_devices_and_accesspoint4() which I guess is not a big problem, as the example of Matlab is that pass an additional parameter to 0 to the function. However this example shows quite how you're supposed to call apdm_ctx_get_next_record() and then calls apdm_exit() to the end as you do anywhere.

  For now, it seems more a problem with the use of the functions of your DLL in the decree that something that should be fixed in nodes of library call to access your DLL and correctly. A suggestion to improve the screw, you have now would be to actually do the appropriate error handling. for now, these functions have nothing to do with the return value of functions. The right way would be to check the documentation and if a function returns or the return parameter can indicate an error for actually cause the error cluster spread a significant error code endorsements. And all functions except those which is intended to release all resources must have a business structure that incoming error, does nothing and doesn't send the error through.

  But don't blindly assume that, since the function 1 return 0, not for a mistake that all other functions are too. Some might actually return the number of resources found or whatever with 0 to indicate an error or no resources.

• problem with a block of memory in labview 2009

  Hi all

  I have "ERROR: MapLib:979 - LUT4 symbol" during the compilation process (lots of errors like this), and I discovered that the reason of my problem is block of MEMORY.

  To be sure that the problem is in this block, I did a very simple project in LabView 2009 (on FPGA Target PCI5640R) only with the use of this block you can see in the photo, as well as in file test_memory block.lvproj attached link: https://www.dropbox.com/sh/u87f1oihelmm4dq/Jo_6-bICSf

  

  I have a problem with compiling VI with this block, and I have so many errors like:

  ERROR: MapLib:979 - LUT4 symbol
  "window/Thatcher/n_00000036/nSCTL_00000013_00000014/n_000000A3/cOutLoc<0>1.
  (output = window/Thatcher/res000001ed_wi<2>) is the input signal
  "window/Thatcher/res0000020d_wo<1>" that will be deleted. See Section 5 of the
  Map a report file to find out why the input signal will become conveyors.

  or

  ERROR: MapLib:978 - LUT4 symbol
  "window/Thatcher/n_00000036/nSCTL_00000013_00000014/n_000000A3/cOutLoc<23>1.
  (output = window/Thatcher/res000001ed_wi<25>) is an equation that uses
  input pin I2, which no longer has a connected signal. Make sure that all the
  the pins used in the equation for this LUT are signals that are not cut
  (see Section 5 of the report file map for details on which signals were
  adjusted).

  Entire report, you can see in the file report.txt on the attached link.

  I would appreciate if someone could take a look at my problem with simple project and suggest me a solution.

  I'm really stuck with my biggest project which need to have this memory block.

  I'm looking forward to hear from you,

  King looks

  ING. Damir Hamidovic

  Hi all

  I find a sollution to my problem.

  In memory-properties-general-setting up, I changed the block to look up Table memory, and I compile memory.vi and run it successfully.

  I did change as you can see on the picture:

  

  Just, can you tell me is it all "bad properties" and limits the use of this type of memory (Look up Table) of the implementation?

  King looks

• allocation of memory for a LStrHandle

  Hello

  I know that this thing about memory allocation and LStrings has been much already posted but I couldn t find the answer to my question.

  Currently I am working with an external code (c ++) and calling a function of vi.

  I want normal c ++ channels:

  (1) declaring normal c ++ string

  (2) conversion c ++ string in a Lstring + pass it as Lstringhandle (this works very well!)

  (3) initialize a Lstrhandle for my result (it would work very well if I knew that the length of the resultant Lstring! but because the application is set to call ANY function of vi I don't know what the function and so I do not know the length of the result string)

  My problem is really basic, but how do I get the actual length of the modified LString?

  Let´s tell my function of vi concatenates 2 strings and returns the result, then the signature of my vi-function should look like this:

  void __cdecl Concat (LstrHandle * string1, LStrHandle * string2, LStrHandle result);

  at some point, so I need to know the length of the result.

  Any ideas?

  (it is important that the strings are Lstrings and they are passed as pointers!)

  I've tried usinig labviews functions of manager, but this won't work for all of the problem this toddler is integrated.

  I appreciate the ideas and help!

  Thank you...

  Gabriella_ wrote:

  Hello

  void __cdecl Concat (LStrHandle * string1, LStrHandle * string2, LStrHandle result);

  at some point, so I need to know the length of the result.

  If your function receives the string1 and string2 as input and returns the result, then the first two by reference and by value, it seems quite a bit back.

  Because string1 and string2 are entered, the function is supposed to use, they must be defined and allocated in any case properly by the appellant. But for output handles passed by reference, it is quite valid in LabVIEW since on version 6 to pass a NULL handle and LabVIEW code takes care of allocating a new handle in this case.

  So basically if you declare your function like that when, you create your LabVIEW DLLS:

  void __cdecl Concat (string1, string2 LStrHandle, LStrHandle LStrHandle * result);

  It is quite valid to call this function like this in your C code:

  LStrHandle string1; initialization of a string

  LStrHandle string2; initialization of a string

  Result LStrHandle = NULL;

  Concat (string1, string2, & result);

  and the result will contain a valid string descriptor on successful return.

  If the output parameter is declared by the value, then you obviously can't pass in a NULL handle because the function has no way to return a new handle. Then, you will indeed need to allocate an empty descriptor like this:

  LStrHandle result2 = (LStrHandle) DSNewHClr (sizeof (int32));

  This allocates a handle with the place for the numElm value and initializes it to 0.

• Number of allocations of memory of hexadecimal string

  I am convert a string to a byte array and then converting this array of bytes into a hexadecimal table using the built-in primitive like this

  

  What is the best way for a performance? When I run the DETT I see multiple memory allocations. I think that one for each element of the array. I think it has to do with the point of constraint. Also, it happens only if I connect to the chain of the indicator. If I run this without the indicator chain I don't see not all memory allocations. (Perhaps LabVIEW do not know the code because I don't do anything with the result)

  I just got the DETT and I'm not very sure of how LabVIEW allocates memory. But I do a test by running this code

  

  I see not all memory allocations in the DETT as I do with the number of hexadecimal string.

  
  

• How to display an object mesh continually update with the Labview 3D photo object

  I have a stream of update permanently of 3D images that can be represented in a mesh (a film in 3D if you want). I want to display in the 3D image object so that whenever I acquire a new 3D image that it is displayed. Examples are rare, and I couldn't find anything that dealt with this particular issue.

  Currently (in a FOR/loop WHILE) for each iteration I create an object of the scene, set the geometry as an object mesh newly created, set the texture and it wire eventually to the 3D image. This implementation seems a memory leak (Task Manager shows permanently increases the used memory and processing speed will eventually drop). I guess that's because I recreate the object for each iteration. Problem is, I can't find something that would let me release/delete the object once I'm done with the framework. All the examples I found only deal with the creation of the 3D object once and manipulating.

  What is the appropriate way to code this?

  You just need to use the "narrow" VI on reference photo 3D like this code below. It runs inside the loop.

  

  Now, if you're dealing with the mesh, then you should use the set the mesh to change the points inside the loop and then just close the reference after the code is done. Look at this code below. The trick is to recover the object using Typecast (to more specific reference VI) reference.

  

  Also, look at examples of shipping to:

  C:\nivs_dev\2013\InstallTo\ProgramFiles\National Instruments\LabVIEW\examples\picture\3D Picture Control

  and especially the with Meshes.vi.

• Range of custom error codes and error rings/Labview 2013 SP1

  Hello

  for the error message personalized codes there are these assigned ranges:
  -8999-by-8000
  5000 to 9999
  500 000 to 599 999

  If I create an "error ring" in Labview 2013 SP1, then I am able to choose predefined error codes or I can put in some custom error codes. Curious as I was I chose 'Labview' in the menu drop down and looked up some error codes. I noticed that there are some affected error codes that are of the order of custom error codes (see attachment) of 538170 to 538193.

  Is this a bug or feature? What is the impact if I defined error codes customized with identical, already existing error codes?

  Kind regards

  Thomas

  Thomas,

  It seems you have installed ModBus library. As it is an additional package, picking "custom error codes" is not bad even if the library fits in LV...

  Norbert

• When I insert a memory card to upload photos or whatever when windows opens, it opens the card very well, after I delete and insert the other, there are no drivers or anything

  Remember - this is a public forum so never post private information such as numbers of mail or telephone!

  Ideas: help

  • You have problems with programs
  • Error messages
  • Recent changes to your computer
  • What you have already tried to solve the problem

  Ideas: help

  =========================================
  When you insert the second memory card and nothing happens...
  try to go to start / computer and see if your drive is
  recognized as one or more hard drives. You might see
  something like:

  Removable disk (e :))
  Removable drive (g)
  Removable disk (h :))

  One of these drive letters will connect on your memory card and if
  you right-click and choose explore, you should be able to see the
  Directory of the card and upload your photos.

  Volunteer - MS - MVP - Digital Media Experience J - Notice_This is not tech support_I'm volunteer - Solutions that work for me may not work for you - * proceed at your own risk *.

• BlackBerry Smartphones Priv - access to the memory card for media photos

  I worked on how to record photos (attachments email; when the Save button is facing the edge, it was a bit a helping hand), and I save on the memory card.  But where did they end by?  How to access photos on memory card?

  Thanks to some research by keywords, I fell randomly on the charges which do not seem to be accessible via folders Photos/camera...  But I can't find to display the new anywhere and the charges that should be here are not visible to me...

  In addition, how to change the order of the files, or indeed the names of files in the files of the device in the Photos app?

  Have now managed to connect using the USB cable, so access SD card and move the photos to the visible file to the Photos app.  It's DCIM - camera.

  They are then visible on the Photos (first page is always useful), as well as always appearing on the records of the unit.

  If connection problems via USB to access the SD card, see the thread on that.

• Allocation of memory and CPU

  Guys,

  My question may sound trivial, but I need it to be clear.
  If I allocate a certain amount of RAM and CPU (without reservation) on some VMS, if virtual machines are not fully allocated amount, is used by other virtual machines.
  I am asking that more I VCOPs reports with a lot of oversized VMs and I also I know I must take measures to reduce the overhead of each virtual machine, I need to know if the memory and CPU are shared dynamically in case of needs of other virtual machines.

  Thanks in advance.

  Daniele

  Short answer Yes, if no reservation is defined, resources are allocated dynamically.  In case of contention, actions values will be used for the allocation of resources.  Virtual machines with lots of unused memory are taxed (income tax slowed) and claimed in a balloon.  The important thing is to know what the VM workload is running, and if VMs are memory aid for the contents of the cache, it is to say sql or exchange and these may consider oversized VMs.  Monitor the virtual machine during the period during the normal business cycle and the size of your virtual machines accordingly.

• Win 8 consumer overview allocation of memory

  I installed Win 8 in VM Player 4.0 on a laptop of HP under Win 7 Professional 32-bit with 4 GB of ram. (Yes, I know that Win 7 32 bit can only use 3 GB of ram).

  I initially allocated 2 GB ram (Max recommended) to win 8 and it ran OK, but there seems to be a lot of beating HD (HD swap?) past. I have reset the settings of virtual computer to allocate only 1 GB (recommended) to win 8 and it seemed to work much better. less derouillee and more rapid response when running win 8.

  So the question is: why to win 8 runs faster with less ram?  Is that because it uses only the "excess" 1 GB of ram that does not use Win 7? When I got the 2 GB allocated, he fought with Win 7 for memory space?

  > So the question is: why to win 8 runs faster with less ram?

  This is normal - each VM will go faster if you assign as little RAM if necessary