Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!iuvax!rutgers!mcnc!ecsvax!utoddl
From: utoddl@ecsvax.UUCP (Todd M. Lewis)
Newsgroups: comp.sys.amiga.tech
Subject: Re: CBM, Why did you make it so hard?
Keywords: Graphics Libraries, reentrancy
Message-ID: <6700@ecsvax.UUCP>
Date: 23 Mar 89 14:41:26 GMT
References: <913@dover.uucp> <3623@amiga.UUCP> <933@dover.azsps.mot.com>
Organization: UNC Educational Computing Service
Lines: 27



I have not tried this, but if you just want to save
the programmer some typing, leaving out one parameter
in your function calls (from the Amiga perspective)
you could do something like:

#define glibcall(a,b,c) glibcal(RportEquiv,a,b,c)

Your user would have to make an initial call to set up
this context variable and one more at the end to reclaim
system resources consumed by the first one, but there is
_MUCH_ less overhead this way than having each routine in
your library do a FindTask() etc.  It is just syntactic
sugar, but it might make it taste more like what you want.

Note, however, that Amiga programmers have gotten quite
used to the pass-me-your-context-when-you-call-me way of
working with libraries.  It may not be such a big win 
after all.  Especially when someone eventually has multiple
contexts within one program.
  _____        
    |      Todd M. Lewis            Disclaimer: If you want my employer's
    ||\/|  utoddl@ecsvax.uncecs.edu             ideas, you'll have to
    ||  ||                                      _buy_ them. 
     |  ||     
         |___   (Never write a program bigger than your screen.)