* in \a xbt_mallocator_release() when the stack is full, and when
* the mallocator is freed.
* \param reset_f function to reinitialise an object of your datatype, called
* in \a xbt_mallocator_release() when the stack is full, and when
* the mallocator is freed.
* \param reset_f function to reinitialise an object of your datatype, called