windows系統調用 臨界區機制

標籤：style   class   blog   code   color   get   

 1 #include "iostream" 2 #include "windows.h" 3 #include "cstring" 4 using namespace std; 5  6  7 static int g_nIndex=0; 8 const int MAX_TIMES=10; 9 static DWORD g_dwTimes;10 CRITICAL_SECTION g_CriticalSection;11 12 DWORD WINAPI IncProc(LPVOID lpParam){13     BOOL fDone=FALSE;14     while(!fDone){15         EnterCriticalSection(&g_CriticalSection);16         if(g_nIndex>=MAX_TIMES){17             fDone=TRUE;18 19         }20         else{21             g_dwTimes++;22             printf("The Inc count‘s value is%d.\n",g_dwTimes);23             g_nIndex++;24             Sleep(10);25         }26         LeaveCriticalSection(&g_CriticalSection);27     }28 29     return(0);30 }31 32 DWORD WINAPI DecProc(LPVOID lpParam){33     BOOL fDone=FALSE;34     while(!fDone){35         EnterCriticalSection(&g_CriticalSection);36         if(g_nIndex>=MAX_TIMES){37             fDone=TRUE;38         }39         else{40         g_dwTimes--;41         printf("The Dec count‘s value id %d.\n",g_dwTimes);42         g_nIndex++;43         Sleep(10);44         }45         LeaveCriticalSection(&g_CriticalSection);46     }47 48     return(0);49 }50 51 void main(){52     HANDLE hThread[2];53 54     InitializeCriticalSection(&g_CriticalSection);55 56     hThread[0]=CreateThread(57         NULL,58         0,59         IncProc,60         reinterpret_cast<LPVOID>(2),61         0,62         NULL63         );64     printf("Thread0 is Created!\n");65 66     hThread[1]=CreateThread(67         NULL,68         0,69         DecProc,70         reinterpret_cast<LPVOID>(2),71         0,72         NULL73         );74     printf("Thread1 is Created!\n");75 76     printf("Both Threads are ready into critical section!\n");77 78     WaitForMultipleObjects(2,hThread,TRUE,INFINITE);79 80     CloseHandle(hThread[1]);81     CloseHandle(hThread[0]);82 83     DeleteCriticalSection(&g_CriticalSection);84 85     getchar();86 }