Mon, 03 Jul 2000 Tobias Klotz wrote:
> Hello,
>
> I have a problem concerning the use of rtf_put using it like this:
>
> my_mem=new whatever;
> rtf_put (FIFO, my_mem, sizeof(whatever))
> delete whatever;
If you're doing this from within an RTL thread or ISR, that explains the
problems. (I assume you're using one of the "C++ in kernel space" solutions
posted here.) The new and delete operators will indirectly call the kernel
memory manager, which will eventually crash, since it doesn't handle
preemption from RTL.
You have to preallocate any memory you need in the RT threads and ISRs in
init_module() or some other code that runs as a normal (non RTL) kernel
thread. If you really need dynamic memory management, you could hack your own
memory manager with a preallocated, non-swappable heap. A LIFO stack of
equally sized blocks is a fast and simple way.
David Olofson
Programmer
Reologica Instruments AB
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