RFR: JDK-8157141 & JDK-8166454: Solaris getisax(2) and meminfo(2) cleanup

Alan Burlison Alan.Burlison at oracle.com
Thu Sep 22 22:54:10 UTC 2016

getisax(2) and meminfo(2) are both Committed interfaces. getisax(2) 
first appeared in Solaris 10, meminfo(2) first appeared in Solaris 9. 
Currently they are both accessed via dlsym(3C) which is unnecessary as 
they will always be present on any version of Solaris that Java9+ will 
run on. In addition, this patch modifies the use of getisax(2) to probe 
for the correct buffer size to use so it will continue to work if/when 
the current 2-word buffer size is exceeded - although of course any 
newly-returned capability bits will need handling, as is already the case.

I'm submitting these two bugs as a single unit for review as they share 
common code (os::Solaris::misc_sym_init()) which can be removed if they 
are fixed together.

getisainfo() manpage:

meminfo() manpage:

Bugs:   https://bugs.openjdk.java.net/browse/JDK-8157141
Webrev: http://cr.openjdk.java.net/~alanbur/JDK-8157141%2bJDK-8166454/

JPRT hostpot testset is clean.

Alan Burlison

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