C++-windows临界区问题

Question

这段代码在VC6.0中会出现内存错误，在vs2005中确没有问题，是什么原因

#include <iostream>
#include <Windows.h>
using namespace std;

int pp[6];
CRITICAL_SECTION g_cs;
DWORD WINAPI ThreadProc1(LPVOID /*lpParameter*/)
{
    while(TRUE)
    {
        //EnterCriticalSection(&g_cs);
        cout<<"ThreadProc1::";
        for (int i = 0; i<6; ++i)
        {
            pp[i]++;
            cout<<pp[i]<<" ";
        }
        cout<<endl;
        //LeaveCriticalSection(&g_cs);
        //Sleep(1);
    }
}
void print_()
{
    for (int i = 0; i<6; ++i)
    {
        cout<<pp[i]<<" ";
    }
}

DWORD WINAPI ThreadProc2(LPVOID /*lpParameter*/)
{
    while(TRUE)
    {
        EnterCriticalSection(&g_cs);
        cout<<"ThreadProc2::";
        //print_();
        for (int i = 0; i<6; ++i)
        {
            cout<<pp[i]<<" ";
        }
        Sleep(2);
        cout<<endl;
        LeaveCriticalSection(&g_cs);
        //Sleep(1);
    }
}

void main()
{
    for (int i = 0; i<6; ++i)
    {
        pp[i] = i+1;
    }
    InitializeCriticalSection(&g_cs);
    HANDLE hThread[2];
    hThread[0] = CreateThread(NULL, 0, ThreadProc1, NULL, 0, 0);
    hThread[1] = CreateThread(NULL, 0, ThreadProc2, NULL, 0, 0);
    WaitForMultipleObjects(2, hThread, TRUE ,INFINITE);
    DeleteCriticalSection(&g_cs);
}

Answer 1

对于cout的实现，VC6.0和vc2005是不同的。你取消掉ThreadProc1中EnterCriticalSection(&g_cs)和LeaveCriticalSection(&g_cs)的注释，那么行为应该就正确了。但实际上可能还存在问题，即不应该通过CreateThread直接在C/C++中创建线程，而是使用_beginthread/_beginthreadex
msdn文档：http://msdn.microsoft.com/en-us/library/kdzttdcb(v=vs.71).aspx
参考：http://www.cppblog.com/eday/archive/2006/11/25/15648.html