本文實(shí)例講述了C++使用CriticalSection實(shí)現(xiàn)線程同步的方法，在前文C++線程同步實(shí)例分析的基礎(chǔ)上增加了四行代碼，使用了四個函數(shù)：
EnterCriticalSection ::DeleteCriticalSection ::EnterCriticalSection ::LeaveCriticalSection此時，打印出來的數(shù)字就相等了。
具體代碼如下：
#include "stdafx.h" #include <Windows.h> DWORD g_cnt1; DWORD g_cnt2; BOOL g_bContinue = TRUE; CRITICAL_SECTION cs; DWORD WINAPI ThreadProc(__in LPVOID lpParameter) { ::EnterCriticalSection(&cs); while(g_bContinue) { g_cnt1++; g_cnt2++; } ::LeaveCriticalSection(&cs); return 0; } int _tmain(int argc, _TCHAR* argv[]) { HANDLE hThread[2]; g_cnt1 = g_cnt2 = 0; ::InitializeCriticalSection(&cs); hThread[0] = ::CreateThread(NULL, 0, ThreadProc, NULL, 0, NULL); hThread[1] = ::CreateThread(NULL, 0, ThreadProc, NULL, 0, NULL); Sleep(1000); g_bContinue = FALSE; ::WaitForMultipleObjects(2, hThread, TRUE, INFINITE); printf("g_cnt1=%d/n",g_cnt1); printf("g_cnt2=%d/n",g_cnt2); ::DeleteCriticalSection(&cs); ::CloseHandle(hThread[0]); ::CloseHandle(hThread[1]); return 0; }希望本文所述對大家的C++程序設(shè)計(jì)有所幫助。
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