讀者寫者問題操作系統(tǒng)課程設(shè)計-資料下載頁
2025-03-25 12:06本頁面
【正文】 hReadSemaphore,1,NULL)。if(pPersonm_nID == 4) finished = true。 //所有的讀寫完成ExitThread(0)。return 0。}DWORD WINAPI WriterProc(LPVOID lpParam){Person *pPerson = (Person*)lpParam。// wait for the start timewhile(g_CurrentTime != pPersonm_nStartTime){}printf(Writer %d is Requesting ...\n,pPersonm_nID)。printf(\n\n************************************************\n)。WaitForSingleObject(g_hWriteSemaphore,INFINITE)。// modify the writer39。s real start timepPersonm_nStartTime = g_CurrentTime。printf(Writer %d is Writting the Shared Buffer...\n,pPersonm_nID)。while(g_CurrentTime = pPersonm_nStartTime + pPersonm_nWorkTime){}printf(Writer %d is Exit...\n,pPersonm_nID)。printf(\n\n************************************************\n)。//g_NumOfWriteRequest。ReleaseSemaphore(g_hWriteSemaphore,1,NULL)。if(pPersonm_nID == 4) finished = true。//所有的讀寫完成ExitThread(0)。return 0。}bool CreateReader(int StartTime,int WorkTime,int ID){DWORD dwThreadID。if(g_NumPerson = MAX_PERSON)return false。Person *pPerson = amp。g_Persons[g_NumPerson]。pPersonm_nID = ID。pPersonm_nStartTime = StartTime。pPersonm_nWorkTime = WorkTime。pPersonm_nType = READER。g_NumPerson++。// Create an New ThreadpPersonm_hThread= CreateThread(NULL,0,ReaderProc,(LPVOID)pPerson,0,amp。dwThreadID)。if(pPersonm_hThread == NULL)return false。return true。}bool CreateWriter(int StartTime,int WorkTime,int ID){DWORD dwThreadID。if(g_NumPerson = MAX_PERSON)return false。Person *pPerson = amp。g_Persons[g_NumPerson]。pPersonm_nID = ID。pPersonm_nStartTime = StartTime。pPersonm_nWorkTime = WorkTime。pPersonm_nType = WRITER。g_NumPerson++。// Create an New ThreadpPersonm_hThread= CreateThread(NULL,0,WriterProc,(LPVOID)pPerson,0,amp。dwThreadID)。if(pPersonm_hThread == NULL)return false。return true。} 16
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