https://issues.apache.org/bugzilla/show_bug.cgi?id=50157
Summary: a lot of MapperListener is registered as
ContainerListener of StandardContext
Product: Tomcat 7
Version: trunk
Platform: PC
OS/Version: Windows XP
Status: NEW
Severity: minor
Priority: P2
Component: Connectors
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=26213)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=26213)
patch for MapperListener.java
The same five MapperListener is registered as ContainerListener of
StandardContext.
At first when I add StandardHost by using "Engine addChild operation" via JMX,
same MapperListener is registered as ContainerListener of StandardHost.
StandardEngine.addChild()
->StandardEngine.addChildInternal()
->StandardEngine.fireContainerEvent()
->MapperListener.containerEvent() line: 133 <-- here
...
->MapperListener.containerEvent() line: 135
->MapperListener.registerHost() line: 276 <-- here
Therefore, StandardHost has the same two MapperListener as ContainerListener.
---
Then, starting StandardHost by using "Host start operation", the same five
MapperListener is registered as ContainerListener of StandardContext.
(1)LifecycleState of StandardHost is changed to STARTING.
StandardHost(LifecycleBase).start() line:140
->StandardHost(ContainerBase).startInternal()
...
->StandardHost(ContainerBase).fireContainerEvent <-- fireContainerEvent fire
two times
...
->MapperListener.containerEvent() line:133 <-- here
...
->MapperListener.containerEvent() line:137
->MapperListener.registerContext() line:339 <-- here
(2)LifecycleState of StandardHost is changed to STARTED.
StandardHost(LifecycleBase).start() line:156
...
->MapperListener.registerHost() line:279
->MapperListener.registerContext() line:339 <-- here
---
I think that the memory is wasted a little because of the above issue.
On a related issue, MapperListener is not registered as
Container/LifecycleListener for StandardContext on starting up Tomcat.
I attached the patch for above issues.
Best regards.
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