MDC automatically inherited

[Fabian Jacquet]

Hi all,

I need to use NDC or MDC. I would like that child thread automatically
inherit the parent context so I try to use MDC.

Here is my code and it seems the context is not inherited:

#include "stdafx.h"
#include <log4cxx/log4cxx.h>
#include <log4cxx/logger.h>
#include <log4cxx/logmanager.h>
#include <log4cxx/xml/domconfigurator.h>

DWORD WINAPI test1(LPVOID param)
{
    log4cxx::LoggerPtr log = log4cxx::LogManager::getLogger("MyLogger");
    LOG4CXX_INFO(log, "Message thread with MDC");

    return 0;
}

int _tmain(int argc, _TCHAR* argv[])
{
    log4cxx::xml::DOMConfigurator::configure("log.xml");

    log4cxx::LoggerPtr log = log4cxx::LogManager::getLogger("MyLogger");
    LOG4CXX_INFO(log, "Message without MDC");

    log4cxx::MDC::put("MyMDC", "MyMDC");
    LOG4CXX_INFO(log, "Message with MDC");

    CreateThread(NULL,NULL,test1,NULL, 0, NULL);

    Sleep(3000);
    return 0;
}


Output:
2010-08-18 11:27:44,015 [0x0000073c] INFO   {MyLogger - ::__cdecl wmain(24)}
- Message without MDC
2010-08-18 11:27:44,015 [0x0000073c] INFO  MyMDC {MyLogger - ::__cdecl
wmain(27)} - Message with MDC
2010-08-18 11:27:44,015 [0x00000bf0] INFO   {MyLogger - ::long __stdcall
test1(14)} - Message thread with MDC


I don't know where is my mistake.