Serviceability Agent

[Andrew Hughes]

I've noticed the following patch in OpenJDK8's HotSpot:

changeset:   3593:a9fed06c01d2
user:        bpittore
date:        Thu Aug 30 11:20:01 2012 -0400
summary:     7154641: Servicability agent should work on platforms other than x86, sparc

http://hg.openjdk.java.net/jdk8/jdk8/hotspot/rev/a9fed06c01d2

Discussion: http://mail.openjdk.java.net/pipermail/serviceability-dev/2012-August/006709.html

This changes the serviceability agent to search for additional CPU support rather than
just failing.  I notice they didn't actually add the code to support those CPUs, and I imagine
that's why:

+ try {
+ Class pic = Class.forName("sun.jvm.hotspot.utilities.PlatformInfoClosed");
+ AltPlatformInfo api = (AltPlatformInfo)pic.newInstance();
+ if (api.knownCPU(cpu)) {
+ return cpu;
+ }
+ } catch (Exception e) {} 

and:

+ifeq ($(HS_ALT_MAKE),)
+ ifneq ($(OPENJDK),true)
+ HS_ALT_MAKE=$(GAMMADIR)/make/closed
+ else
+ HS_ALT_MAKE=NO_SUCH_PATH
+ endif
+endif 

were added.

After this change, only ia64 and zero don't have the agent.

In the case of Zero, do we know why this is?  And do we intend to get it
working on Zero and, for that matter, Shark & the ARM ports?
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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