Support Board
Date/Time: Sun, 22 Dec 2024 16:41:00 +0000
Sierra crash on multiple charts using Dynamic Memory Allocations Within Study Instance
View Count: 930
| [2015-06-08 20:56:56] |
| wwwingman - Posts: 185 |
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Hi I need persistence between study call so followed the instructions in the documentation on the Dynamic Memory Allocations Within Study Instance. ( http://www.sierrachart.com/index.php?page=doc/doc_ACSILProgrammingConcepts.html#DynamicMemoryAllocations ). However, something seem to go wrong when I use the DLL on multiple charts. And it crashes SierraCharts. Here is the simples sequence that systematically crashes my sierra : 1. Compile the a skeleton with the code below (The code comes from the documentation, I have not modified it). 2. Open Chart #1. Add the skeleton DLL. 3. Duplicate Chart #1 (=> Chart #2). 4. Close Chart #1. 5. Close Chart #2. 6. Sierra crashes. Tested on 1259 and 1261 versions. Please advise. -- W. The code of the skeleton : #include "sierrachart.h" SCDLLName("SierraSkeleton") SCSFExport scsf_DynamicMemoryAllocationExample(SCStudyInterfaceRef sc) { if (sc.SetDefaults) { sc.GraphName = "Dynamic Memory Allocation Example"; sc.AutoLoop = 1; sc.FreeDLL = 0; return; } double * p_DoubleArray = (double*)sc.GetPersistentPointer(1); if(sc.LastCallToFunction) { if(p_DoubleArray != NULL) { sc.FreeMemory( p_DoubleArray); sc.SetPersistentPointer(1, NULL); } return; } if(p_DoubleArray == NULL) { p_DoubleArray = (double *) sc.AllocateMemory( 1024 * sizeof(double) ); if(p_DoubleArray != NULL) sc.SetPersistentPointer(1, p_DoubleArray); else return; } p_DoubleArray[0] = 100; return; } Date Time Of Last Edit: 2015-06-08 20:57:38
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| [2015-06-09 01:52:35] |
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This problem will be solved in the next release. The persistent data had to be cleared when copying a chart.
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