RE: variadic macros

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On 
> Behalf Of Brett Bibby
> Sent: Tuesday, December 21, 2004 2:42 AM
> To: [email protected]
> Subject: Re: [GD-Windows] variadic macros
> 
> > Paul Bleisch wrote:
> > Depending on what you're after, you might find that the __noop 
> > intrinsic will help you out.
> >
> 
> That's new, thanks.  I don't think I can use it still though 
> as I need to insert some parameters before calling the debug function.
> 
> This is what we have on other platforms:
> 
> #define MPE_SHELL_ERROR_LOG(...) \
>   MpiShellLogTextAdd(__FILE__, \
>        (MpeChar *)__func__, \
>        __LINE__, \
>        MPE_SHELL_LOG_FLAG_ERROR, \
>        __VA_ARGS__)
> 
> 
> I want to insert the file, func and line number.  (BTW, does 
> windows allow __func__ ?)
> 
> Thanks again,
> Brett


__func__ is not, but __FUNCTION__ is available (which I think is
equivalent).

A potential workaround for your varargs macros is to do something like:

#ifdef _DEBUG
void _SetDebugInfo(MpeChar* file, MpeChar* func, int line, unsigned
flags);
void _DebugPrint(char* fmt, ...);
#define MPE_SHELL_ERROR_LOG _SetDebugInfo(__FILE__, __FUNCTION__,
__LINE__, MPE_SHELL_LOG_FLAG_ERROR), _DebugPrint
#else
#define MPE_SHELL_ERROR_LOG __noop
#endif

this is not threadsafe and not a 1:1 replacement for your current code,
so beware.

Paul


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