Author: kkolinko
Date: Thu Oct 29 03:23:48 2009
New Revision: 830834
URL: http://svn.apache.org/viewvc?rev=830834&view=rev
Log:
vote
Modified:
tomcat/tc6.0.x/trunk/STATUS.txt
Modified: tomcat/tc6.0.x/trunk/STATUS.txt
URL:
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/STATUS.txt?rev=830834&r1=830833&r2=830834&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/STATUS.txt (original)
+++ tomcat/tc6.0.x/trunk/STATUS.txt Thu Oct 29 03:23:48 2009
@@ -34,9 +34,36 @@
* Fix issue where the first request for a deleted JSPs returns as if the JSP
still exists.
http://svn.apache.org/viewvc?view=rev&revision=683969
- +1: markt, funkman
+ +1: markt, funkman, kkolinko
0: remm (looks risky, very minor problem), fhanik - minor problem, jim
-1:
+ kkolinko: (Notes:
+ 1. This does not affect configurations where Jasper is run with
+ development=false. In those configurations JSP removal is not detected
+ at all.
+
+
+ 2. I think that, strictly speaking, JspCompilationContext#removed field
+ has to be either volatile or AtomicInteger, or there must be
+ synch(JspServletWrapper) when accessing it:
+
+ JspCompilationContext#incrementRemoved() is always called from inside a
+ synchronized(JspServletWrapper) block, but
+ JspCompilationContext#isRemoved() is e.g. called in
+ JspServletWrapper#service() which is not synchoronized.
+
+ Of course, that happens only when development=true. Otherwise that
+ field is always 0. Thus I am hesitant to adding volatile to it to not
+ affect productive configurations. Maybe double-lock pattern is better
+ (like one in JspServletWrapper#getServlet()).
+
+ This issue with JspCompilationContext#removed field is not a blocker
+ for this patch, because it exists independently of it. And I think it
+ would be hardly noticeable, as it won't be observed if there were any
+ (unrelated) synchs earlier in the same Thread, and e.g. with
+ development=true mode there is a syncronized(this) block below in
+ JspServletWrapper#service().
+ )
* Backport cleanup of semantics of thisAccessedTime and
lastAccessedTime for sessions:
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