On Tue, 1 Dec 2020 12:04:43 GMT, Coleen Phillimore <cole...@openjdk.org> wrote:
>> Harold Seigel has updated the pull request incrementally with one additional
>> commit since the last revision:
>>
>> 8256718: Obsolete the long term deprecated and aliased Trace flags
>
> src/hotspot/share/runtime/arguments.cpp line 612:
>
>> 610: { "TraceRedefineClasses", "-Xlog:redefine+class=", "info",
>> "16.0" },
>> 611: { "PrintJNIResolving", "-Xlog:jni+resolve=", "debug",
>> "16.0" },
>> 612: { NULL, NULL, NULL, NULL }
>
> I think if we wanted to give a message that the flag was obsolete and to
> suggest changing the command line, we should only do it for
> -XX:+TraceClassLoading and -XX:+TraceExceptions (I'd originally thought
> -XX:+TraceClassUnloading was important enough to release note but now I'm not
> so sure.) The rest of the flags should either go in the table that they're
> no longer recognized.
Keeping the message for any flag requires keeping all the supporting code. I
don't see the "big 3" are special. They have been deprecated since 9 and we
have clearly told people this when they use them. We're also release-noting
this for 16 (again - this was documented when UL was added). I don't think we
have to pander to anyone who hasn't updated their launch scripts by now.
-------------
PR: https://git.openjdk.java.net/jdk/pull/1525
