Author: markt
Date: Wed Sep  7 20:08:49 2011
New Revision: 1166370

URL: http://svn.apache.org/viewvc?rev=1166370&view=rev
Log:
Reduce cache memory usage for classes with no annotations. Review comment from 
kkolinko.

Modified:
    tomcat/tc7.0.x/trunk/   (props changed)
    
tomcat/tc7.0.x/trunk/java/org/apache/catalina/core/DefaultInstanceManager.java

Propchange: tomcat/tc7.0.x/trunk/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Wed Sep  7 20:08:49 2011
@@ -1 +1 @@
-/tomcat/trunk:1156171,1156276,1156304,1156530,1156602,1157015,1157018,1157151,1157198,1157204,1157810,1157832,1157834,1157847,1157908,1157939,1158155,1158160,1158176,1158195,1158198-1158199,1158227,1158331,1158334-1158335,1158426,1160347,1160592,1160611,1160619,1160626,1160639,1160652,1160720-1160721,1160772,1160774,1160776,1161303,1161310,1161322,1161339,1161486,1161540,1161549,1161584,1162082,1162149,1162169,1162721,1162769,1162836,1162932,1163630,1164419,1164438,1164469,1164480,1164567,1165234,1166077,1166290
+/tomcat/trunk:1156171,1156276,1156304,1156530,1156602,1157015,1157018,1157151,1157198,1157204,1157810,1157832,1157834,1157847,1157908,1157939,1158155,1158160,1158176,1158195,1158198-1158199,1158227,1158331,1158334-1158335,1158426,1160347,1160592,1160611,1160619,1160626,1160639,1160652,1160720-1160721,1160772,1160774,1160776,1161303,1161310,1161322,1161339,1161486,1161540,1161549,1161584,1162082,1162149,1162169,1162721,1162769,1162836,1162932,1163630,1164419,1164438,1164469,1164480,1164567,1165234,1166077,1166290,1166366

Modified: 
tomcat/tc7.0.x/trunk/java/org/apache/catalina/core/DefaultInstanceManager.java
URL: 
http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/catalina/core/DefaultInstanceManager.java?rev=1166370&r1=1166369&r2=1166370&view=diff
==============================================================================
--- 
tomcat/tc7.0.x/trunk/java/org/apache/catalina/core/DefaultInstanceManager.java 
(original)
+++ 
tomcat/tc7.0.x/trunk/java/org/apache/catalina/core/DefaultInstanceManager.java 
Wed Sep  7 20:08:49 2011
@@ -31,6 +31,7 @@ import java.security.PrivilegedAction;
 import java.security.PrivilegedActionException;
 import java.security.PrivilegedExceptionAction;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
@@ -402,6 +403,10 @@ public class DefaultInstanceManager impl
                                 annotation.name()));
                     }
                 }
+                if (annotations.size() == 0) {
+                    // Use common empty list to save memory 
+                    annotations = Collections.emptyList();
+                }
                 annotationCache.put(clazz, annotations);
             } else {
                 for (AnnotationCacheEntry entry : annotations) {



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