We've run into a problem using OVal as a part of the Play framework.
There appears to be a concurrency problem in SerializableMethod.java: https://sourceforge.net/p/oval/code/HEAD/tree/trunk/src/main/java/net/sf/oval/internal/util/SerializableMethod.java#l31
specifically:
private static final WeakHashMap<Method, SerializableMethod=""> CACHE = new WeakHashMap();
is static, but WeakHashMap isn't thread safe. On at least Java(TM) SE Runtime Environment (build 1.7.0_67-b01), if two threads hit that cache at "just the right time," one of them will spinlock forever.
I believe the fix is simply to wrap in some Concurrent variant.
Last edit: Andrew Malota 2015-05-01
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We've run into a problem using OVal as a part of the Play framework.
There appears to be a concurrency problem in SerializableMethod.java:
https://sourceforge.net/p/oval/code/HEAD/tree/trunk/src/main/java/net/sf/oval/internal/util/SerializableMethod.java#l31
specifically:
private static final WeakHashMap<Method, SerializableMethod=""> CACHE = new WeakHashMap();
is static, but WeakHashMap isn't thread safe. On at least Java(TM) SE Runtime Environment (build 1.7.0_67-b01), if two threads hit that cache at "just the right time," one of them will spinlock forever.
I believe the fix is simply to wrap in some Concurrent variant.
Last edit: Andrew Malota 2015-05-01
Hi Andrew, thanks for reporting the issue. I committed a fix and built a snapshot version.
http://oval.sourceforge.net/mvn-repo/snapshot/net/sf/oval/oval/1.85-SNAPSHOT/
Regards,
Seb