本文实例讲述了C++使用CriticalSection实现线程同步的方法，在前文C++线程同步实例分析的基础上增加了四行代码，使用了四个函数：
EnterCriticalSection ::DeleteCriticalSection ::EnterCriticalSection ::LeaveCriticalSection此时，打印出来的数字就相等了。
具体代码如下：
#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;
}
希望本文所述对大家的C++程序设计有所帮助。
