Subject: Re: Starting build-system work (Windows/Mac users please speak up)
To: Kartik Ohri <kartikohri13@gmail.com>
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Cc: pljava-dev@lists.postgresql.org
From: Chapman Flack <chap@anastigmatix.net>
Message-ID: <5ED474CA.3000106@anastigmatix.net>
Date: Sun, 31 May 2020 23:23:54 -0400
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On 05/31/20 12:00, Chapman Flack wrote:
>> - Messages from the JVM itself that are emitted through a 'vfprintf hook'
>>   are caught by PL/Java's hook [1] and injected into PostgreSQL's
>>   elog system at a selectable level, usually INFO. (That is probably
>>   the path being followed by the -Xcheck:jni messages, explaining
>>   why they have INFO: in front.)

Exploiting that fact, I decided to just condense out those messages (only
the ones coming from Java's own JMX classes, outside our power to fix)
right at the source, by putting a small state machine in the vfprintf hook
to recognize and not log them. That's in PR #276.

Also in that PR, changes to fix the remaining -Xcheck:jni messages that
were really coming from PL/Java. For the moment, in my environment,
with PR #275 and #276 applied, it builds and tests -Xcheck:jni clean.

That should eliminate any need for doing fancy stuff with those messages
in the CI configuration. Any new issues that crop up in development later
ought to produce a smaller volume of messages that we want to know about.

Regards,
-Chap