临界区线程对象的使用

#include <windows.h>

#include <iostream>

using namespace std;

CRITICAL_SECTION g_cs;

bool g_bContinue = true;

int g_count1 = 0;

int g_count2 = 0;

DWORD WINAPI ThreadProc(LPVOID lpParameter);

int main()

{

HANDLE g_hTrd[2];

InitializeCriticalSection(&g_cs);     //This function initializes a critical section object.  

g_hTrd[0] = CreateThread(NULL,0,ThreadProc,NULL,0,NULL);

g_hTrd[1] = CreateThread(NULL,0,ThreadProc,NULL,0,NULL);

WaitForMultipleObjects(2,g_hTrd,FALSE,1000);  

g_bContinue = false;

CloseHandle(g_hTrd[0]);

CloseHandle(g_hTrd[1]);

DeleteCriticalSection(&g_cs);       //This function releases all resources used by an unowned critical section object.  

Sleep(1);

cout << "g_count1 = " << g_count1 << "\t g_count2 = " << g_count2 << endl;

return 0;

}

DWORD WINAPI ThreadProc(LPVOID lpParameter)

{

while(g_bContinue)

{

 //This function waits for ownership of the specified critical section object.  

 //The function returns when the calling thread is granted ownership.  

 EnterCriticalSection(&g_cs);  

 g_count1++;

 g_count2++;

 cout << "g_cnt1 = " << g_count1 << "\t g_cnt2 = " << g_count2 << endl;

 //This function releases ownership of the specified critical section object.  

LeaveCriticalSection(&g_cs);                

}

return 0;

}