Some native exceptions are wrapped too agressively
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Key: JRUBY-6149
URL: https://jira.codehaus.org/browse/JRUBY-6149
Project: JRuby
Issue Type: Bug
Components: Java Integration
Affects Versions: JRuby 1.6.4
Environment: JRuby 1.6.4,
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03-384-10M3425)
Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02-384, mixed mode)
Reporter: Dave Ray
Attachments: unrescuable.patch, unrescuable.tgz
Discussed this on twitter with @headius and @technomancy a bit. Clojure's STM
uses exceptions for retries within a transaction
(clojure.lang.LockingTransaction$RetryEx). When these exceptions pass through
JRuby, they're wrapped, causing the STM transaction logic higher up the stack
to fail since it can't catch the retry exceptions any more.
So, I'm partly just reporting the issue, but I was able to create a fairly
simple test case (no Clojure or threads) and very naive solution. It's just a
Set of unrescuable exception types in JavaSupport, extendable by Ruby code. I'm
sure this is wrong in many ways since I've never looked at the JRuby source
before, but it was an interesting exercise :)
Example and patch attached.
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