Ok, I added a "valid" flag into each extension table data structure (ie: one
flag for each extension table).
Since all extension tables use the same cache as the Table1, then whenever data
is requested from any of these extension tables then the
Table1_container_load() routine will be called if the cache has expired. As a
result, I set the "valid" flag for each extension table to FALSE in the
Table1_container_load() routine. In the row_prep() routines of the extension
tables, I check whether the "valid" flag is FALSE for that particular table. If
FALSE, then I load new row data and set the flag to TRUE.
I think this is what you had in mind. Seems like it works fine. Thanks
Robert Story <[EMAIL PROTECTED]> wrote: On Wed, 13 Jun 2007 06:31:57 -0700
(PDT) Need wrote:
NH> I was wondering whether the row_prep() routine should be utilizing the
cache data in that the row_prep() routine should only be called once (for the
particular row) within the 60 seconds until the cache times out. This means
that subsequent "snmpget" requests (for the particular row) will not result in
the row_prep() routine being called.
NH>
NH> Perhaps the cache is just used for the overall table "container" and not
utilized for specfic rows?
Exactly.. add a 'valid' flag to your data structure.. Or use a bit (or 8) in
rowreq_flags:
/*
* flags per row. Currently, the first (lower) 8 bits are reserved
* for the user. See mfd.h for other flags.
*/
u_int rowreq_flags;
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