Question about task stack allocation

Joel Sherrill joel.sherrill at
Wed Dec 17 17:24:01 UTC 2003

mikeci at wrote:

>>Just read _Thread_Stack_Allocate(), I think maybe 'stack_allocate_hook'
>>in 'CPU Table' could help. For example you can configure
>>'stack_allocate_hook' as 'malloc' so task stacks always allocated in

In theory, but I think that the stack_allocate_hook is called from
a critical seciton which does not allow malloc() to be called.  The
general idea was to have a pre-allocated pool of task stacks and
you manage them in a more simple fashion.  The original application
that used this ended up using an MMU and page management so tasks
that over or under ran their stack would get a fault.

> Hi!
> I would like to allocate task stack for one task only. If I use
> stack_allocate_hook, this hook is for all tasks, right?


> Regards
> Ivica

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