Computer will freeze and have no response at all when it runs the following codes. Fmt () is probablly the reason for that. Any solutions? Thanks. #include <formatio.h>#include <dataacq.h>#include <utility.h>#include <ansi_c.h>#include <cvirte.h> #include <userint.h>#include "real time.h" static int panelHandle, tsqHandle; int CVICALLBACK WriteQueue (void *functionData); int threadID, j;int plotFlag;volatile int stopFlag; int main (int argc, char *argv[]){ if (InitCVIRTE (0, argv, 0) == 0) return -1; /* out of memory */ if ((panelHandle = LoadPanel (0, "real time.uir", PANEL)) < 0) return -1; DisplayPanel (panelHandle); RunUserInterface (); DiscardPanel (panelHandle); return 0;} int CVICALLBACK Start (int panel, int control, int event, void *callbackData, int eventData1, int eventData2){ int number, readID, i; float dsp; char read_string [300]; switch (event) { case EVENT_COMMIT: CmtScheduleThreadPoolFunction (DEFAULT_THREAD_POOL_HANDLE, WriteQueue, 0, &threadID); stopFlag = 0; plotFlag = 0; j = 0; while (1) { if (stopFlag == 1) break; SetCtrlVal (panel, PANEL_Z, (double) j++); ProcessSystemEvents (); } CmtWaitForThreadPoolFunctionCompletion (DEFAULT_THREAD_POOL_HANDLE, threadID, 0); CmtReleaseThreadPoolFunctionID (DEFAULT_THREAD_POOL_HANDLE, threadID); break; } return 0;} int CVICALLBACK Stop (int panel, int control, int event, void *callbackData, int eventData1, int eventData2){ switch (event) { case EVENT_COMMIT: stopFlag = 1; break; } return 0;} int CVICALLBACK WriteQueue (void *functionData){ double dsp; char read_string [300]; while (!stopFlag) /*Forzen3: Z can not go beyond 200.*/{ strcpy (read_string, "123"); Fmt (&dsp, "%f<%s", read_string);} return 0; }

LabWindows/CVI

CVI mulithread problems

Just for the community.
This secondary question has been moved to:
http://forums.ni.com/ni/board/message?board.id=250&message.id=25459#M25459

Thank you all for the support.
Yardov

Gerardo O.
RF SW Engineering R&D
National Instruments

Message 11 of 11

(894 Views)

LabWindows/CVI

CVI mulithread problems

Re: CVI mulithread problems