From:	Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Cannot use of LOCK_FUNCTION, END_OF_FUNCTION,... in classes?
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NNTP-Posting-Date:	Tue, 26 Sep 2000 13:03:08 GMT
Distribution:	world
Date:	Tue, 26 Sep 2000 13:03:08 GMT
To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

On Tue, 26 Sep 2000 06:48:44 +0200, "Martin Czamai"
<M DOT Czamai AT peak-system DOT com> wrote:

>
>Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p> schrieb in im
>Newsbeitrag: n8jvsskmu0b5sb4qa1f2uvheu1bcirjqf7 AT 4ax DOT com...
>> On Mon, 25 Sep 2000 17:37:59 +0200, "Martin Czamai"
>> <M DOT Czamai AT peak-system DOT com> wrote:
>>
>> >Hello,
>> >
>> >my problem is that I want to lock functions (like interrupt service
>> >routines) using the END_OF_FUNCTION and LOCK_FUNCTION macros from allegro
>in
>> >classes. This doesn't work because MYFUNCNAME_end is not a member of
>> >MYCLASS. Any idea how to fix this problem?
>> >Thanks in advance for your help
>>
>> If you're using a class method as an Allegro timer handler, make sure
>> both the method and the END_OF_FUNCTION are static.
>>
>> static void Class::my_timer(void)
>> {
>>
>> }
>> static END_OF_FUNCTION(Class::my_timer);
>
>This doesn't work - the compiler returns the error message "cannot declare
>member function Class::mytimer() to have static linkage" :-((

Been a while since I wrote C++.  Normally I stick to C or go all the
way and use Java (veering offtopic...).

>The intened purpose of the function i want to lock is the interrupt service
>routine of some piece of hardware.
>Any idea again?

I wouldn't use methods as timer handlers.  This isn't Java.

Now I remember.  The 'static' keywords go in your class declaration:
class Class
{
  ...
  static void my_timer();
  static END_OF_FUNCTION(my_timer);
  ...
}
and leave static off the implementations.

This might have _bad_ effects; I can't guarantee the performance of a
method used as a timer handler.

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