Lazy Initialisation has race condition which leads to livelock
--------------------------------------------------------------
Key: WSIF-95
URL: https://issues.apache.org/jira/browse/WSIF-95
Project: Axis-WSIF
Issue Type: Bug
Components: Basic Architecture
Affects Versions: 2.0, 2.1
Environment: Especially triggered with Java 6
Reporter: Bernd Eckenfels
The WSIFUtil class does a lazy initialization of the HashMap containing java
keywords in the isJavaKeyword() method. Since this is unguarded with a lock on
program startup a high concurrency can lead to multiple threads entering the
code for filling the hashtable. This leads unfortunatelly to a 100% cpu
consumption since put/get are executed concurrently in this case.
The easiest fix would be to move the filling of the map into a static
initializer. The big advntage of this is, you can remove the if (keywordMap ==
null) chec completely and it is thread safe with no locking.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
