a debugging mechanism

[Fukuda]

My debugging mechanism works like this:

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#ifdef _DEBUG_H
    #define DEBUG(Y) Y
#else
    #define DEBUG(Y)
#endif
...
...
DEBUG(printf("Error1");)

I want a debugging mechanism that give me chance to debug my os modul by modul. For example, I want to write, in keyboard modul:

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DEBUG(1 ,printf("DEBUG:Keyboard Error"));

and in mouse modul:

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DEBUG(2, printf("DEBUG:Mouse Error"));

The code below doesnt work, but I think it explains what I want.

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#ifdef _DEBUG_H && #if _DEBUG_H == ModulNo
   #define DEBUG(ModulNo, Y) Y
#else
   #define DEBUG(ModulNo, Y)
#endif

[Pype.Clicker]

what about replacing DEBUG(module, ... ) by DB_MODULE(...) ?

otherwise, you could do

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#define DEBUG(module, action) \
    if (module&DEBUGGED_MODULES) action

[Fukuda]

what about replacing DEBUG(module, ... ) by DB_MODULE(...) ?

Do u mind a little bit explaining it?

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#define DEBUG(module, action) \
    #if (module&DEBUGGED_MODULES) action

umm.. may I use #if directive as this vay? (Ill check after disconnecting from net)

[Pype.Clicker]

err ... note that i had no "#" before my if !
i was just using the fact that a good compiler generates no code for

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if (0) action();

and generate no test code for

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if (1) action();

thus if you have

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#include <debug.h>
#define DEBUG_MODULES (DB_KEYB|DB_MOUSE)

DEBUG(DB_KEYB,printf("keyboard debugger turned on"));

the condition "DB_KEYB&(DB_KEYB|DB_MOUSE)" resolves to a constant true value, and the printf code will be assembled.

If you want to get a sneak peek on how i "solved" this for my own project, get a look at debug.h here
and at debug.chere