[xstream-scm] [jira] (XSTR-772) FieldDictionary.buildMap does not scale well in concurrent environments

[Ralf Purnhagen (JIRA)]

Title: Message Title

Ralf Purnhagen created an issue   XStream / XSTR-772 FieldDictionary.buildMap does not scale well in concurrent environments Issue Type: Improvement Affects Versions: 1.4.7 Assignee: Jörg Schaible Attachments: FieldDictionary.java.patch Components: Converters Created: 15/Apr/15 1:52 PM Priority: Minor Reporter: Ralf Purnhagen Having many threads concurrently using XStream, we run into scalability issues because of the FieldDictionary. The current implementation still blocks for a cache hit. I attached a patch to this issue, using double checked locking and a ConcurrentHashMap to overcome this issue. Using ConcurrentHashMap should be an option for Java 1.5, which is hopefully the target for the current trunk. With this patch I also optimized the traversal upwards the type hierarchy. In my opinion traversal could be stopped if a cache entry for a superclass is found. Add Comment   This message was sent by Atlassian JIRA (v6.1.6#6162-sha1:7af547c) To unsubscribe from this list please visit: http://xircles.codehaus.org/manage_email