멀티쓰레드 뮤텍스 연습

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#include <iostream>   #include <windows.h>   #include <process.h>        #define THREAD_COUNT 2        HANDLE g_mutex = NULL;   int number = 0;        unsigned int __stdcall threadFun1(void *lpVoid)        {       //함수 입장       std::cout << "Enter : " << __FUNCTION__ << std::endl;            for (int i = 0; i < 10; i++)       {           WaitForSingleObject(g_mutex, INFINITE);           //std::cout << "EnterMutex : " << __FUNCTION__ << std::endl;                std::cout << number << __FUNCTION__ << std::endl;           number++;                //std::cout << "EndMutex : " << __FUNCTION__ << std::endl;           ReleaseMutex(g_mutex);       }            //함수 종료       std::cout << "End : " << __FUNCTION__ << std::endl;       //_endthreadex(0); 생략 가능       return 0;   }        unsigned int __stdcall threadFun2(void *lpVoid)   {       //함수 입장       std::cout << "Enter : " << __FUNCTION__ << std::endl;            for (int i = 0; i < 10; i++)       {           WaitForSingleObject(g_mutex, INFINITE);           //std::cout << "EnterMutex : " << __FUNCTION__ << std::endl;                std::cout << number << __FUNCTION__ << std::endl;           number++;                //std::cout << "EndMutex : " << __FUNCTION__ << std::endl;           ReleaseMutex(g_mutex);       }            //함수 종료       std::cout << "End : " << __FUNCTION__ << std::endl;       //_endthreadex(0); 생략 가능       return 0;   }        int main()        {       HANDLE hThread[THREAD_COUNT];       g_mutex = CreateMutex(NULL, FALSE, NULL);       hThread[0] = (HANDLE)_beginthreadex(NULL, 0, threadFun1, NULL, 0, NULL);       hThread[1] = (HANDLE)_beginthreadex(NULL, 0, threadFun2, NULL, 0, NULL);            WaitForMultipleObjects(THREAD_COUNT, hThread, true, INFINITE);       CloseHandle(g_mutex);       CloseHandle(hThread[0]);       CloseHandle(hThread[1]);            return 0;        }

결과 화면 

WaitForSingleObject()함수로 signal, non-signal인지 확인후 non-signal이면 블로킹을 한다

크리티컬섹션은 유저모드지만 뮤텍스는 커널모드이다

(네이버 블로그 - 2016.02.14. 03:32)