[lldb-dev] What's the purpose of the TestStarted-XXX and TestFinished-XXX files?

[Greg Clayton via lldb-dev]

I would be happy to see these files go away if no one is using them...

> On Mar 9, 2016, at 2:32 PM, Adrian McCarthy via lldb-dev <lldb-dev at lists.llvm.org> wrote:
> 
> The test traces directory tends to accumulate thousands and thousands of TestStarted-XXX and TestFinished-XXX files.  What purpose do they serve?
> 
> I assume it's for trying to figure out why something went wrong.  If you have a TestStarted-123 without a corresponding TestFinished-123, then you can know that a test crashes and by looking inside the file, you can see which test and what the command was.
> 
> If that's the case, then wouldn't it be cleaner to delete the TestStarted file when the test finishes rather than writing a second file?  Then you can simply search for TestStarted files to see the ones that didn't finish successfully without the noise of thousands of others that did.
> 
> I suppose it's also possible that some other process is looking at these files in order to collect statistics.  Is there such a beast and is it valuable?
> 
> Adrian.
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