Hi,
The cache is actually a bit complex to follow -- I'll add some
comments to help describe. Basically:
-- Each thread maintains a cache of ADP code which includes per-
interp byte codes and pointers to text regions in a shared area.
When all threads no longer point to the shared text, it's free'd from
memory.
-- When enabled, the execution cache is simply the replacement of
what would have been per-interp byte code blocks with pointers to
combined runs of text.
-- Files on disk are checked on each request, whether execution
caching is enabled or not, via a stat call. On Unix the key in the
cache is device/inode (which allows the same file pointed by multiple
symlinks to be only read once) and on Windows via filename.
-Jim
On Jun 27, 2005, at 7:45 AM, Dossy Shiobara wrote:
On 2005.06.27, Bas Scheffers <[EMAIL PROTECTED]> wrote:
This sounds very interesting! Few questions about the cache:
Where does it store the generated pages? Just in memory, or on disk?
In an Ns_Cache named nsadp:$servername:$itPtr, it looks like -- I'm
not
sure why it's in a per-interp cache, that seems to defeat the purpose.
This really ought to be a server-wide cache sitting in
servPtr->adp.cache rather than itPtr->adp.cache ...
What is used as "key" for the cached page, the arguments you pass
the ADP?
I think the key (should be) a Tcl list, with elements being the full
path to the ADP plus all the ADP args. I'd have to re-read the new
code
to see if that's how Jim implemented it, though.
How do you clear the cache?
[ns_cache_flush] should work.
-- Dossy
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