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Improving servlet loading performance

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svn: r685
This commit is contained in:
Jay McCarthy 2005-08-26 14:53:25 +00:00
parent 7ada980df0
commit 9d4f01f1db
1 changed files with 12 additions and 5 deletions
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17
collects/web-server/dispatch-servlets.ss
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@ -250,11 +250,18 @@
;; refreshed (see dispatch).
(define (cached-load name)
(let ([e
(call-with-semaphore config:scripts-lock
(lambda ()
(hash-table-get (unbox config:scripts)
name
(lambda () (reload-servlet-script name)))))])
; First try to get the cache entry
(hash-table-get
(unbox config:scripts)
name
(lambda ()
; Then try to update the cache entry
(call-with-semaphore
config:scripts-lock
(lambda ()
(hash-table-get (unbox config:scripts) name
(lambda ()
(reload-servlet-script name)))))))])
(values (cache-entry-servlet e)
(cache-entry-namespace e))))