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Date/Time: Tue, 26 Nov 2024 13:18:55 +0000



Post From: Dynamic Memory Allocation

[2014-03-08 07:58:05]
Sierra Chart Engineering - Posts: 104368
We did respond earlier but the response we gave we realized was not relevant to the issue.

We have tested this code and it worked properly:
SCSFExport scsf_DynamicMemoryAllocationExample(SCStudyInterfaceRef sc)
{
  if (sc.SetDefaults)
  {
    // Set the configuration and defaults

    sc.GraphName = "Dynamic Memory Allocation Example";

    sc.AutoLoop = 1;

    // During development set this flag to 1, so the DLL can be modified. When development is done, set it to 0 to improve performance.
    sc.FreeDLL = 0;

    return;
  }


  // Do data processing
  double * p_DoubleArray = (double*)sc.PersistVars->i1;

  if(sc.LastCallToFunction)
  {
    if(p_DoubleArray != NULL)
    {
      delete p_DoubleArray;
      sc.PersistVars->i1 = NULL;
    }

    return;
  }

  if(p_DoubleArray == NULL)
  {
    //Allocate an array of 1024 doubles.
    p_DoubleArray = (double *) new double[1024];

    if(p_DoubleArray != NULL)
      sc.PersistVars->i1 = (int)p_DoubleArray;
    else
      return;
  }

  //assign value to one of the elements
  p_DoubleArray[0] = 100;

  return;


}


Therefore, there must be some other problem going on. We cannot completely see your code. What happens when you test the function above as it is.
Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

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Date Time Of Last Edit: 2014-03-08 07:58:28