멀티쓰레드 뮤텍스 연습

#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)