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Posted to dev@felix.apache.org by "Niels Beekman (JIRA)" <ji...@apache.org> on 2014/12/11 16:58:13 UTC
[jira] [Commented] (FELIX-4728) InstanceManager concurrency issue
[ https://issues.apache.org/jira/browse/FELIX-4728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242724#comment-14242724 ]
Niels Beekman commented on FELIX-4728:
--------------------------------------
Relevant portions of the thread stacks:
Thread 98: (state = IN_JAVA)
- java.util.HashMap.getEntry(java.lang.Object) @bci=81, line=465 (Compiled frame; information may be imprecise)
- java.util.HashMap.containsKey(java.lang.Object) @bci=2, line=449 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.getMethodById(java.lang.String) @bci=19, line=1310 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.onEntry(java.lang.Object, java.lang.String, java.lang.Object[]) @bci=28, line=1238 (Compiled frame)
Thread 62: (state = IN_JAVA)
- java.util.HashMap.getEntry(java.lang.Object) @bci=81, line=465 (Compiled frame; information may be imprecise)
- java.util.HashMap.get(java.lang.Object) @bci=11, line=417 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.getMethodById(java.lang.String) @bci=5, line=1309 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.onEntry(java.lang.Object, java.lang.String, java.lang.Object[]) @bci=28, line=1238 (Compiled frame)
Thread 58: (state = IN_JAVA)
- java.util.HashMap.getEntry(java.lang.Object) @bci=81, line=465 (Compiled frame; information may be imprecise)
- java.util.HashMap.containsKey(java.lang.Object) @bci=2, line=449 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.getMethodById(java.lang.String) @bci=19, line=1310 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.onEntry(java.lang.Object, java.lang.String, java.lang.Object[]) @bci=28, line=1238 (Compiled frame)
Thread 53: (state = IN_JAVA)
- java.util.HashMap.getEntry(java.lang.Object) @bci=81, line=465 (Compiled frame; information may be imprecise)
- java.util.HashMap.containsKey(java.lang.Object) @bci=2, line=449 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.getMethodById(java.lang.String) @bci=19, line=1310 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.onEntry(java.lang.Object, java.lang.String, java.lang.Object[]) @bci=28, line=1238 (Compiled frame)
Thread 44: (state = IN_JAVA)
- java.util.HashMap.getEntry(java.lang.Object) @bci=81, line=465 (Compiled frame; information may be imprecise)
- java.util.HashMap.get(java.lang.Object) @bci=11, line=417 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.getMethodById(java.lang.String) @bci=5, line=1309 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.onEntry(java.lang.Object, java.lang.String, java.lang.Object[]) @bci=28, line=1238 (Compiled frame)
Thread 40: (state = IN_JAVA)
- java.util.HashMap.getEntry(java.lang.Object) @bci=81, line=465 (Compiled frame; information may be imprecise)
- java.util.HashMap.containsKey(java.lang.Object) @bci=2, line=449 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.getMethodById(java.lang.String) @bci=19, line=1310 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.onEntry(java.lang.Object, java.lang.String, java.lang.Object[]) @bci=28, line=1238 (Compiled frame)
Thread 39: (state = IN_JAVA)
- java.util.HashMap.getEntry(java.lang.Object) @bci=81, line=465 (Compiled frame; information may be imprecise)
- java.util.HashMap.containsKey(java.lang.Object) @bci=2, line=449 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.getMethodById(java.lang.String) @bci=19, line=1310 (Compiled frame)
- org.apache.felix.ipojo.InstanceManager.onEntry(java.lang.Object, java.lang.String, java.lang.Object[]) @bci=28, line=1238 (Compiled frame)
> InstanceManager concurrency issue
> ---------------------------------
>
> Key: FELIX-4728
> URL: https://issues.apache.org/jira/browse/FELIX-4728
> Project: Felix
> Issue Type: Bug
> Components: iPOJO
> Affects Versions: ipojo-runtime-1.11.2
> Reporter: Niels Beekman
>
> We observed a race condition in InstanceManager.onEntry. This is caused by improperly synchronized access on a HashMap. Unlike reported in FELIX-3500, we did not get an exception, but high cpu usage due to the data race. See the relevant thread stacks in the comments.
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