Re: DS80C400 reentrant multi tasking function calls with Keil compiler

> Am I correct in thinking that the "reentrant" keyword allows a function
> to use the reentrant stack which "allows recursive function calls and
> for multiple processes to call a single function simultaneously" (quoted
> text from current Dallas startup400.a51 file)?  I have demonstrated,
> that a reentrant function called recursively  executes correctly.
>

This text in the startup is not correct and will be changed.  I don't think
the reentrant keyword will allow multiple processes to call a function
simultaneously with our task scheduler.

> void foo() reentrant
> {
>     int counter;
>     counter = 0;
>     while(counter++ < MAX_COUNT)
>     {
>        // *** DO SOMETHING ***
>     }
>     // Tidy up after task
> }
>

In addition to the methods suggested by Bob Heise, if your local variables
are in 'data' space, then you should also be multi-process safe.  I think
you could do this in this example with...

>     data int counter;

Kris




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