random technical notes

static LPTOP_LEVEL_EXCEPTION_FILTER m_previousFilter = NULL;


typedef BOOL (WINAPI *MINIDUMPWRITEDUMP)(HANDLE hProcess, DWORD dwPid, HANDLE hFile, MINIDUMP_TYPE DumpType,
                                         CONST PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
                                         CONST PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
                                         CONST PMINIDUMP_CALLBACK_INFORMATION CallbackParam);

static LONG WINAPI MyUnhandledExceptionFilter(PEXCEPTION_POINTERS pExceptionInfo)
{
    HMODULE hDll = ::LoadLibrary(_T("DBGHELP.DLL"));
    MINIDUMPWRITEDUMP pDump = (MINIDUMPWRITEDUMP)::GetProcAddress(hDll, "MiniDumpWriteDump");

    _MINIDUMP_EXCEPTION_INFORMATION ExInfo;
    ExInfo.ThreadId = ::GetCurrentThreadId();
    ExInfo.ExceptionPointers = pExceptionInfo;
    ExInfo.ClientPointers = NULL;

    MINIDUMP_CALLBACK_INFORMATION mci;

    // HANDLE hFile - minidamp file name(for example, "test.dmp")

    BOOL bOK = pDump(::GetCurrentProcess(), ::GetCurrentProcessId(),
                     hFile, 1, &ExInfo, NULL, &mci);
}


void main()
{
    // setup our own ExceptionHandler
    m_previousFilter = SetUnhandledExceptionFilter(MyUnhandledExceptionFilter);

    // actial work

    // befoe exit
    if (m_previousFilter)
    {
        SetUnhandledExceptionFilter(m_previousFilter);
    }
}