Details
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Type: Improvement
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Status: Closed
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Priority: Minor
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Resolution: Fixed
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Affects Version/s: 1.4.7
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Fix Version/s: 1.5.0
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Component/s: Converters
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Labels:None
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JDK version and platform:1.8.0_40 for Windows 64 Bit
Description
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.
Issue Links
- is related to
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XSTR-727 Concurrency improvement
Activity
Jörg Schaible
made changes -