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Re: [cdt-dev] CDT Indexer spinning on complex files
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On 01/28/2018 12:25 PM, Avi Kivity wrote:
Hi, I'm more or less tracking CDT master. Recently the indexer hangs
when processing large files, consuming 100% CPU in one thread.
Using jvisualvm I see it's spending a lot of time here:
org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor.findDeclarationOwnerDefinition()
6.449319 49,477 ms (6.4%) 49,477 ms 49,670 ms 49,670 ms
I would love to provide more information, but I'm a complete n00b (or
rather, I forgot all that I've ever learned) about debugging Java
applications. If you can provide guidance about what can be done to
provide more information, I'll be happy to dig some more.
I remembered SIGQUIT prints a thread dump, so here's one data point.
"Worker-3" #31 prio=5 os_prio=0 tid=0x00007fa068001450 nid=0x188d
runnable [0x00007fa070e14000]
java.lang.Thread.State: RUNNABLE
at
org.eclipse.cdt.internal.core.pdom.indexer.IndexerASTVisitor$Definition.matches(IndexerASTVisitor.java:82)
at
org.eclipse.cdt.internal.core.pdom.indexer.IndexerASTVisitor$Definition.search(IndexerASTVisitor.java:66)
at
org.eclipse.cdt.internal.core.pdom.PDOMWriter.process(PDOMWriter.java:551)
at
org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.writeToIndex(AbstractIndexerTask.java:1279)
at
org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.parseFile(AbstractIndexerTask.java:1096)
at
org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.parseLinkage(AbstractIndexerTask.java:896)
at
org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:557)
at
org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:161)
at
org.eclipse.cdt.internal.core.pdom.indexer.PDOMRebuildTask.run(PDOMRebuildTask.java:90)
at
org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:155)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)