[SLING-2744] AbderaActivator uses invalid double check pattern

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Scripting JSP-Atom-Taglib 1.0.0
• Fix Version/s: Scripting JSP-Atom-Taglib 1.0.0
• Component/s: Scripting
• Assignee: Unassigned
• Reporter: Ian Boston
• Created: 25/Feb/13 03:38
• Updated: 25/Feb/13 03:52
• Resolved: 25/Feb/13 03:52

Description

There is a if ( x == null); syncronized(lock) {; if (x == null ) check which violates Java memory model.
see: http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html