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POpassing integer array in thread function
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  1. POpassing integer array in thread function
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    copied!<p>I am working on multiple producer and Single consumer problem.I wanted to pass Thread like 1,2,3 in the thread function so that individual thread can be named based on these number.</p> <p>But the program is crashing after count 7 while creating thread.I think problem is due to variable nThreadNo; if i limit the count less than 7 it works fine.but if i make count more than this it crashes.</p> <pre><code>void CEvent1Dlg::CreateProducerThreads() { try { nThreadNo = new int20]; memset(nThreadNo,0,20); if (nThreadNo ==NULL) return; }catch(...) { MessageBox(_T("Memory allocation Failed"),_T("Thread"),1); return ; } int i = 0; for ( i = 0;i&lt;20;i++) { //nThreadNo = i+1; nThreadNo[i] = i+1; hWndProducer[i] = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)ProducerThrdFunc,(void*)(nThreadNo+i),0,&amp;dwProducerThreadID[i]); if (hWndProducer[i] == NULL) { //ErrorHandler(TEXT("CreateThread")); ExitProcess(3); } } //WaitForMultipleObjects(20,hWndProducer,TRUE,INFINITE); } DWORD WINAPI ProducerThrdFunc ( LPVOID n ) { int *nThreadNo = (int*)n; char chThreadNo[33]; memset(chThreadNo,0,33); while(1) { itoa(*nThreadNo,chThreadNo,10); char* pMsg1 = new char[100]; char* pMsg2 = new char[100]; memset(pMsg1,0,100); memset(pMsg2,0,100); strcpy(pMsg1,"Producer "); strcat(pMsg1," Thread No:"); strcat(pMsg1,chThreadNo); if (stThreadInfoProd.pEventQueue-&gt;AddTail(pMsg1)==TRUE) { strcpy(pMsg2,"Producer "); strcat(pMsg2," Thread No:"); strcat(pMsg2,chThreadNo); strcat(pMsg2," Added the Msg"); } else { strcpy(pMsg2,"Producer "); strcat(pMsg2," Thread No:"); strcat(pMsg2,chThreadNo); strcat(pMsg2,"failed to Add the Msg"); } PostMessage(stThreadInfoProd.hWndHandle,UWM_ONUPDATEPRODUCERLIST,(WPARAM)pMsg2,0); strcat(pMsg1," Adding Msg:"); //PostMessage(stThreadInfoProd.hWndHandle,UWM_ONUPDATEPRODUCERLIST,(WPARAM)pMsg2,0); Sleep(3000); } return 0; } </code></pre>
 

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