Rules governing stack purging
m.schonewille at economy-x-talk.com
Mon Oct 30 12:26:51 EST 2006
It seems to be correct to assume that getting a property from a stack
whose destroystack property has been set to true does not cause that
stack to stay in memory. I tried the following in the message box:
answer file ""; get the bla of stack it; put the openstacks
and the selected stack file is not among the lines of the openstacks.
(Dave, I think your reply in this matter is not correct, unless I
If you delete a stack, you completely remove it from memory. If the
stack happens to be a substack of a mainstack, that substack is also
deleted. This means that you can only safely delete mainstacks.
As far as I know, you cannot purge a substack without either purging
the mainstack or actually deleting the substack.
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Op 30-okt-2006, om 17:48 heeft Richard Gaskin het volgende geschreven:
> I'm working with a client on a system that makes extensive use of
> data stored in custom properties.
> I had been under the impression that as long as the stack
> containing the data has its destroyStack set to true, and as long
> as we don't open the stack, everytime we access its properties
> we're getting it fresh from disk rather than from cached memory.
> Is that correct?
> We're in the process of pinning down some anomalies in our system
> which would seem to suggest that accessing properties can cause a
> stack to remain in memory such that subsequent accesses are
> obtained from memory rather than from disk.
> I would love to be wrong, as it would complicate our system to have
> to manually purge each stack before accessing it.
> And as for that purging, in the absence of a purge command there is
> the workaround of using the delete command, but at the moment my
> memory's flakey: does using "delete stack" merely purge the stack
> but not delete the actual stack if it's a mainStack, or if it's a
> And once we confirm which type of stack we can safely purge without
> deleting it using the "delete stack" command, what method do we use
> to purge stacks of the other kind?
> Richard Gaskin
> Fourth World Media Corporation
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