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Posted to dev@tomcat.apache.org by ma...@apache.org on 2012/03/16 00:40:44 UTC

svn commit: r1301271 - in /tomcat/tc7.0.x/trunk: java/org/apache/catalina/session/ManagerBase.java res/findbugs/filter-false-positives.xml

Author: markt
Date: Thu Mar 15 23:40:44 2012
New Revision: 1301271

URL: http://svn.apache.org/viewvc?rev=1301271&view=rev
Log:
Exclude warning with comment
Add some finals

Modified:
    tomcat/tc7.0.x/trunk/java/org/apache/catalina/session/ManagerBase.java
    tomcat/tc7.0.x/trunk/res/findbugs/filter-false-positives.xml

Modified: tomcat/tc7.0.x/trunk/java/org/apache/catalina/session/ManagerBase.java
URL: http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/java/org/apache/catalina/session/ManagerBase.java?rev=1301271&r1=1301270&r2=1301271&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/java/org/apache/catalina/session/ManagerBase.java (original)
+++ tomcat/tc7.0.x/trunk/java/org/apache/catalina/session/ManagerBase.java Thu Mar 15 23:40:44 2012
@@ -145,16 +145,16 @@ public abstract class ManagerBase extend
 
     protected static final int TIMING_STATS_CACHE_SIZE = 100;
 
-    protected Deque<SessionTiming> sessionCreationTiming =
+    protected final Deque<SessionTiming> sessionCreationTiming =
         new LinkedList<SessionTiming>();
 
-    protected Deque<SessionTiming> sessionExpirationTiming =
+    protected final Deque<SessionTiming> sessionExpirationTiming =
         new LinkedList<SessionTiming>();
 
     /**
      * Number of sessions that have expired.
      */
-    protected AtomicLong expiredSessions = new AtomicLong(0);
+    protected final AtomicLong expiredSessions = new AtomicLong(0);
 
 
     /**
@@ -211,7 +211,8 @@ public abstract class ManagerBase extend
     /**
      * The property change support for this component.
      */
-    protected PropertyChangeSupport support = new PropertyChangeSupport(this);
+    protected final PropertyChangeSupport support =
+            new PropertyChangeSupport(this);
     
 
     // ------------------------------------------------------------- Properties
@@ -796,6 +797,9 @@ public abstract class ManagerBase extend
 
         do {
             if (result != null) {
+                // Not thread-safe but if one of multiple increments is lost
+                // that is not a big deal since the fact that there was any
+                // duplicate is a much bigger issue.
                 duplicates++;
             }
 
@@ -1308,8 +1312,8 @@ public abstract class ManagerBase extend
     // ----------------------------------------------------------- Inner classes
     
     protected static final class SessionTiming {
-        private long timestamp;
-        private int duration;
+        private final long timestamp;
+        private final int duration;
         
         public SessionTiming(long timestamp, int duration) {
             this.timestamp = timestamp;

Modified: tomcat/tc7.0.x/trunk/res/findbugs/filter-false-positives.xml
URL: http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/res/findbugs/filter-false-positives.xml?rev=1301271&r1=1301270&r2=1301271&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/res/findbugs/filter-false-positives.xml (original)
+++ tomcat/tc7.0.x/trunk/res/findbugs/filter-false-positives.xml Thu Mar 15 23:40:44 2012
@@ -89,6 +89,12 @@
     <Bug code="IS" />
   </Match>
   <Match>
+    <!-- We can live with the threading issue. See code comment for details. -->
+    <Class name="org.apache.catalina.session.ManagerBase" />
+    <Method name="generateSessionId" />
+    <Bug code="VO" />
+  </Match>
+  <Match>
     <!-- Use of null is deliberate -->
     <Class name="org.apache.catalina.ssi.ExpressionParseTree" />
     <Method name="pushOpp" />



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