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From ma...@apache.org
Subject svn commit: r1140903 - in /tomcat/tc6.0.x/trunk: ./ STATUS.txt java/org/apache/jasper/compiler/Generator.java webapps/docs/changelog.xml webapps/docs/config/systemprops.xml
Date Tue, 28 Jun 2011 23:22:28 GMT
Author: markt
Date: Tue Jun 28 23:22:27 2011
New Revision: 1140903

URL: http://svn.apache.org/viewvc?rev=1140903&view=rev
Log:
Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=51220
Add a system property to enable tag pooling with JSPs that use a custom base class.
Based on a patch by Dan Mikusa.

Modified:
    tomcat/tc6.0.x/trunk/   (props changed)
    tomcat/tc6.0.x/trunk/STATUS.txt
    tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Generator.java
    tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml
    tomcat/tc6.0.x/trunk/webapps/docs/config/systemprops.xml

Propchange: tomcat/tc6.0.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Tue Jun 28 23:22:27 2011
@@ -1 +1 @@
-/tomcat/trunk:601180,606992,612607,630314,640888,652744,653247,666232,673796,673820,677910,683969,683982,684001,684081,684234,684269-684270,685177,687503,687645,689402,690781,691392,691805,692748,693378,694992,695053,695311,696780,696782,698012,698227,698236,698613,699427,699634,701355,709294,709811,709816,710063,710066,710125,710205,711126,711600,712461,712467,713953,714002,718360,719119,719124,719602,719626,719628,720046,720069,721040,721286,721708,721886,723404,723738,726052,727303,728032,728768,728947,729057,729567,729569,729571,729681,729809,729815,729934,730250,730590,731651,732859,732863,734734,740675,740684,742677,742697,742714,744160,744238,746321,746384,746425,747834,747863,748344,750258,750291,750921,751286-751287,751289,751295,752323,753039,757335,757774,758249,758365,758596,758616,758664,759074,761601,762868,762929,762936-762937,763166,763183,763193,763228,763262,763298,763302,763325,763599,763611,763654,763681,763706,764985,764997,765662,768335,769979,770716,77
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 ,1100822,1101094,1101144,1130774
+/tomcat/trunk:601180,606992,612607,630314,640888,652744,653247,666232,673796,673820,677910,683969,683982,684001,684081,684234,684269-684270,685177,687503,687645,689402,690781,691392,691805,692748,693378,694992,695053,695311,696780,696782,698012,698227,698236,698613,699427,699634,701355,709294,709811,709816,710063,710066,710125,710205,711126,711600,712461,712467,713953,714002,718360,719119,719124,719602,719626,719628,720046,720069,721040,721286,721708,721886,723404,723738,726052,727303,728032,728768,728947,729057,729567,729569,729571,729681,729809,729815,729934,730250,730590,731651,732859,732863,734734,740675,740684,742677,742697,742714,744160,744238,746321,746384,746425,747834,747863,748344,750258,750291,750921,751286-751287,751289,751295,752323,753039,757335,757774,758249,758365,758596,758616,758664,759074,761601,762868,762929,762936-762937,763166,763183,763193,763228,763262,763298,763302,763325,763599,763611,763654,763681,763706,764985,764997,765662,768335,769979,770716,77
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 ,1100822,1101094,1101144,1124680,1130774

Modified: tomcat/tc6.0.x/trunk/STATUS.txt
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/STATUS.txt?rev=1140903&r1=1140902&r2=1140903&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/STATUS.txt (original)
+++ tomcat/tc6.0.x/trunk/STATUS.txt Tue Jun 28 23:22:27 2011
@@ -134,15 +134,6 @@ PATCHES PROPOSED TO BACKPORT:
       - getStuckThreadIds() returns a list of ids. It might be useful to
         have a similar method that returns Thread.getName() names.
 
-* Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=51220
-  Add a system property to enable tag pooling with JSPs that use a custom base
-  class.
-  Based on a patch by Dan Mikusa.
-  http://svn.apache.org/viewvc?rev=1124680&view=rev
-  http://svn.apache.org/viewvc?rev=1124757&view=rev (fixes copy/paste error)
-  +1: markt, rjung, schultz
-  -1:
-
 * https://issues.apache.org/bugzilla/show_bug.cgi?id=51403
   Avoid NPE in JULI FileHandler if formatter is misconfigured
   http://svn.apache.org/viewvc?rev=1137996&view=rev

Modified: tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Generator.java
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Generator.java?rev=1140903&r1=1140902&r2=1140903&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Generator.java (original)
+++ tomcat/tc6.0.x/trunk/java/org/apache/jasper/compiler/Generator.java Tue Jun 28 23:22:27
2011
@@ -77,6 +77,8 @@ class Generator {
         System.getProperty("org.apache.jasper.compiler.Generator.VAR_EXPRESSIONFACTORY",
"_el_expressionfactory");
     private static final String VAR_ANNOTATIONPROCESSOR = 
         System.getProperty("org.apache.jasper.compiler.Generator.VAR_ANNOTATIONPROCESSOR",
"_jsp_annotationprocessor");
+    private static final boolean POOL_TAGS_WITH_EXTENDS =
+        Boolean.getBoolean("org.apache.jasper.compiler.Generator.VAR_EXPRESSIONFACTORY");
 
     /* System property that controls if the requirement to have the object
      * used in jsp:getProperty action to be previously "introduced"
@@ -3405,7 +3407,7 @@ class Generator {
          * clarify whether containers can override init() and destroy(). For
          * now, we just disable tag pooling for pages that use "extends".
          */
-        if (pageInfo.getExtends(false) == null) {
+        if (pageInfo.getExtends(false) == null || POOL_TAGS_WITH_EXTENDS) {
             isPoolingEnabled = ctxt.getOptions().isPoolingEnabled();
         } else {
             isPoolingEnabled = false;

Modified: tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml?rev=1140903&r1=1140902&r2=1140903&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/tc6.0.x/trunk/webapps/docs/changelog.xml Tue Jun 28 23:22:27 2011
@@ -189,6 +189,10 @@
         Correct possible threading issue in JSP compilation when development
         mode is used. (markt)
       </fix>
+      <add>
+        <bug>51220</bug>: Add a system property to enable tag pooling with JSPs
+        that use a custom base class. Based on a patch by Dan Mikusa. (markt)
+      </add>
     </changelog>
   </subsection>
   <subsection name="Cluster">

Modified: tomcat/tc6.0.x/trunk/webapps/docs/config/systemprops.xml
URL: http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/webapps/docs/config/systemprops.xml?rev=1140903&r1=1140902&r2=1140903&view=diff
==============================================================================
--- tomcat/tc6.0.x/trunk/webapps/docs/config/systemprops.xml (original)
+++ tomcat/tc6.0.x/trunk/webapps/docs/config/systemprops.xml Tue Jun 28 23:22:27 2011
@@ -87,6 +87,20 @@
 <section name="Jasper">
   <properties>
 
+    <property name="org.apache.jasper.compiler. Generator.POOL_TAGS_WITH_EXTENDS">
+      <p>By default, JSPs that use their own base class via the extends
+      attribute of the page directive, will have Tag pooling disabled since
+      Jasper cannot guarantee that the necessary initialisation will have taken
+      place. This can have a negative impact on performance. Providing the
+      alternative base class calls _jspInit() from Servlet.init(), setting  this
+      property to <code>true</code> will enable pooling with an alternative base
+      class. If the alternative base class does not call _jspInit() and this
+      property is <code>true</code>, NPEs will occur when attempting to use
+      tags.</p>
+      <p>If not specified, the default value of <code>false</code> will
be used.
+      </p>
+    </property>
+
     <property name="org.apache.jasper.compiler. Generator.VAR_EXPRESSIONFACTORY">
       <p>The name of the variable to use for the expression language expression
       factory.</p>



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