RFR: 8261447: MethodInvocationCounters frequently run into overflow [v8]

[Igor Veresov]

On Tue, 2 Mar 2021 20:55:50 GMT, Igor Veresov <iveresov at openjdk.org> wrote:

>> With overflow I do not mean "counter overflow" as it is used to trigger compiler activities but plain simple "range of singed int exceeded". Should I use different wording? E.g. "counter in signed int overflow"?
>
> Then it will never happen. These values come from ```InvocationCounter::count()```. And it will never return a value > 2^31 - 1.

Sorry, it can return 2^31. Which would be an indication of a counter overflow (InvocationCounter::count_limit == 2^31). Your code is correct in both senses. It is a counter overflow and a signed int overflow.

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PR: https://git.openjdk.java.net/jdk/pull/2511