关于创建临界区的问题

转自：http://bbs.csdn.net/topics/390535912

#include  <windows.h>
#include <iostream.h>

DWORD WINAPI Fun1Proc( LPVOID lpParameter );

DWORD WINAPI Fun2Proc( LPVOID lpParameter );

int tickets=100;
CRITICAL_SECTION g_cs;

void main()
{
	HANDLE hThread1;
	HANDLE hThread2;
	hThread1=CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
	hThread2=CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
	CloseHandle(hThread1);
	CloseHandle(hThread2);

	InitializeCriticalSection(&g_cs);
	Sleep(4000);
	DeleteCriticalSection(&g_cs);

}

DWORD WINAPI Fun1Proc( LPVOID lpParameter )
{
	while(TRUE)
	{

		try{
			EnterCriticalSection(&g_cs);
			Sleep(1);
			if(tickets>0)
			{
				Sleep(1);
				cout<<"Thread1 sell ticket : "<<tickets--<<endl;
				LeaveCriticalSection(&g_cs);

			}
			else 
			{
				LeaveCriticalSection(&g_cs);
				break;
			}
	}
		catch(...)
		{

		}

	}
	return 0;
}


DWORD WINAPI Fun2Proc( LPVOID lpParameter )
{
	while(TRUE)
	{
		
		try{
			EnterCriticalSection(&g_cs);
			Sleep(1);
			if(tickets>0)
			{
				Sleep(1);
				cout<<"Thread2 sell ticket : "<<tickets--<<endl;
				LeaveCriticalSection(&g_cs);
				
			}
			else 
			{
				LeaveCriticalSection(&g_cs);
				break;
			}
		}
		catch(...)
		{
			
		}
		
	}
	return 0;
}