8205132: Remove Thread.countStackFrames()
Daniel D. Daugherty
daniel.daugherty at oracle.com
Tue Oct 29 21:02:19 UTC 2019
On 10/29/19 12:26 PM, Alan Bateman wrote:
> On 23/10/2019 08:25, Alan Bateman wrote:
>> Thread::countStackFrames has been deprecated for 20+ years and has
>> been marked for-removal since Java SE 9. I'd like to remove it for
>> Java SE 14. It's was never a well-defined method and I've been unable
>> to find anything that uses it. The StackWalker API is a much better
>> solution for code that is interested in the number of stack frames.
> Joe Darcy has suggested degrading the method in advance of its
> removal. We did the same with stop(Throwable) when we changed it to
> throw UOE in Java SE 8 before finally removing it in 11. Here is the
> updated webrev and CSR. The CSR will need to be re-reviewed. The
> method description is brief and the same as what we did for
Deleted file. No comments.
> Also just to summarize the discussion/objection from Seth Lytle. I
> think we've established that that it was a regression in JDK 10 that
> allowed that example to work. The method has always been specified to
> fail when the thread is not suspended.
I believe that regression is due my work on Thread-SMR (Safe Memory
Do we need a bug filed against JDK1 to document the regression?
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