[richfaces-issues] [JBoss JIRA] Assigned: (RF-8134) Memory leak in the in-process template compiler.
Alex Kolonitsky (JIRA)
jira-events at lists.jboss.org
Fri Nov 13 07:57:06 EST 2009
[ https://jira.jboss.org/jira/browse/RF-8134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alex Kolonitsky reassigned RF-8134:
-----------------------------------
Assignee: Alex Kolonitsky (was: Andrey Markhel)
> Memory leak in the in-process template compiler.
> ------------------------------------------------
>
> Key: RF-8134
> URL: https://jira.jboss.org/jira/browse/RF-8134
> Project: RichFaces
> Issue Type: Bug
> Components: performance
> Affects Versions: 3.3.2.SR1
> Reporter: Alexander Smirnov
> Assignee: Alex Kolonitsky
> Priority: Critical
> Fix For: 3.3.3.BETA1
>
>
> In-proces compiled templates are widely used by dynamic stylesheets or complonents like suggestionBox. These templates are compiled into in-memory object structures what usually have only one instance in application. These objects are called with special context to generate request output ( lightweight object pattern ).
> <f:call element > caches call parameter values in its instance, even FacesContext or current component references that are short-time objects. As a results, memory leaks are occured in the org.ajax4jsf.rendercit.compiler.MethodCallElement class. The source of problem are inner Signature1 and Signature2 classes:
> Signature1(int size) {
> arguments = new Object[size + 1];
> }
> void update(TemplateContext context, Object[] parameters) {
> arguments[0] = context;
> System.arraycopy(parameters, 0, arguments, 1, parameters.length);
> }
> }
> class Signature2 extends Signature {
> Signature2(int size) {
> arguments = new Object[size + 2];
> }
> void update(TemplateContext context, Object[] parameters) {
> arguments[0] = context.getFacesContext();
> arguments[1] = context.getComponent();
> System.arraycopy(parameters, 0, arguments, 2, parameters.length);
> }
> To avoid memory leaks, only types of the target method should be cached ( not object instances ).
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