Hi Andrei,
I don't think brk or sbrk will help here since they refer to the
global process data segment and you want per fibre/thread/etc stack. I
can think of 2 things you could do if you need fixed addresses:
- write a page-fault handler in a driver and do the mmap through that
driver. With that handler you can control access to the mmap'ed
memory.
- Allocate some space for each stack (as much as you would need at the
beginning). Write a SIGSEGV signal handler that does re-allocation.
For other addresses you can end execution of program. This is quite
hackish though (and you get to use sbrk indirectly :P).
Why do you need fixed addresses though?
Thanks,
Dragos
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