RFR(S): 8058461: serviceability/dcmd/CodelistTest.java and serviceability/dcmd/CompilerQueueTest.java SIGSEGV

Christian Thalinger christian.thalinger at oracle.com
Tue Sep 16 17:00:50 UTC 2014

!     return "Print all compiled methods in code cache that is alive";
“that are alive”.

On Sep 16, 2014, at 1:16 AM, Nils Eliasson <nils.eliasson at oracle.com> wrote:

> Hi,
> I would like review of this change that includes three fixes:
> 1) Let Dcmd Compiler.codelist only print alive-nmethods. We ran into crashes when listing zombies and unloaded too. Alive nmethods includes not-entrants so it still gives a pretty good idea about whats in the code cache and what has been used recently.
> 2) Take CompileQueue lock when printing queue. It is not enough to be at a safepoint - the compiler threads may still mutate the list causing crashes.
> 3) Relax the parsing of long hex-numbers in the test of codelist. High addresses (sparc) casues NumberFormatExceptions.
> bug: https://bugs.openjdk.java.net/browse/JDK-8058461
> webrev: http://cr.openjdk.java.net/~neliasso/8058461/webrev.04/
> Thanks!
> //Nils

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