临界区线程对象的使用

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;
}

作者：铭毅天下
来源：CSDN
原文：https://blog.csdn.net/laoyang360/article/details/7720660
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