Re: [Xenomai-help] native heap services and overloading new

[Jan Kiszka <kiszka@domain.hid>]

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Brandt Erickson wrote:
> I have some code where I'd like to be able to dynamically allocate memory
> in realtime.  Since the code is written in C++, I was thinking of just
> making a huge global RT_HEAP and overloading the new and delete operators
> to use the rt_heap_alloc and rt_heap_free functions.  First off, I'm
> wondering if there are any caveats to this sort of thing that wouldn't be
> obvious to someone new to xenomai like myself.  Second, if I fail to call
> rt_heap_delete before the program terminates, does the heap remain
> registered hang potentially causing problems when I try to re-allocate the
> heap when the program is run again?  Thanks.

For now: yes, the heap will stay, no automatic cleanup (the posix skin
already have this). You could then run into naming conflicts and you
lose memory, of course.

But you could install some signal handler for cleaning up. We do so in
our native-skin-based framework (also C++, but no "evil" ;) features in
use). We even catch SIGSEGV this way.

Jan


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