windbg分析死锁问题

代码如下：

#include <iostream>
#include <STDIO.H>
#include <WINDOWS.H>
using namespace std;

CRITICAL_SECTION cs_DB1;
CRITICAL_SECTION cs_DB2;
DWORD WINAPI ThreadProc(LPVOID lpParam)
{
	
	EnterCriticalSection(&cs_DB1);
	
	cout<<"Updating data base1\n";
	Sleep(3000);
	EnterCriticalSection(&cs_DB2);
	
	cout<<"updating database 2\n";
	
	LeaveCriticalSection(&cs_DB2);
	LeaveCriticalSection(&cs_DB1);
	
	return 1;
	
}

void main()
{
	HANDLE hThread = NULL;
	DWORD dwId = 0;
	
	InitializeCriticalSection(&cs_DB1);
	InitializeCriticalSection(&cs_DB2);
	
	hThread = CreateThread(NULL,0,ThreadProc,NULL,0,&dwId);
	if(hThread)
	{
		Sleep(2000);
		EnterCriticalSection(&cs_DB2);
		
		cout<<"updating database 2\n";
		Sleep(2000);
		EnterCriticalSection(&cs_DB1);
		
		cout<<"UPdating database 1\n";
		
		LeaveCriticalSection(&cs_DB1);
		LeaveCriticalSection(&cs_DB2);
		
		WaitForSingleObject(hThread,INFINITE);
		CloseHandle(hThread);
	}
	
	DeleteCriticalSection(&cs_DB1);
	DeleteCriticalSection(&cs_DB2);
}

输入命令：~*kb，发现两个地方都有RtlEnterCriticalSection+0x150

通过命令!cs将临界区转存储出来

观察OwningThread，发现第一个临界区被线程1c30持有，第二个临界区被线程1864持有，所以产出死锁。