Re: PATCH: zselect builtin.

[Peter Stephenson <pws@csr.com>]

Peter Stephenson wrote:
> When a function is executed, it gets copied to a new structure tree.
> When this is finished with, it gets passed to freeeprog().  But that
> doesn't free it, in case something is still executing it.  It only gets
> freed by freeeprogs() when control returns to the top level.  As my
> function executes in a while loop, this never happens.  I tested this by
> removing all function calls from the while loop and putting the builtins
> inline, and the memory stopped increasing.

This isn't quite right; normal function execution doesn't work quite
that way.  What is happening is I have a function that sets a trap,
which gets restored because of the localtraps option.  Freeing a trap
does use freeeprog, with the described behaviour.  So it's less
disastrous, and I can probably avoid using local traps, but would still
be nice to fix.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 392070


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