Comments on: Local variables scope in HotSpot http://blog.juma.me.uk/2008/10/11/local-variables-scope-in-hotspot/ Thu, 14 Jul 2011 17:33:59 +0000 hourly 1 http://wordpress.com/ By: Ismael Juma http://blog.juma.me.uk/2008/10/11/local-variables-scope-in-hotspot/#comment-37 Sat, 11 Oct 2008 13:22:41 +0000 http://ijuma.wordpress.com/?p=30#comment-37 Thank you Alan, that’s useful to know.

Regarding the GC-Friendly Programming slides, I thought I had seen them before, but seems like I had missed the liveness analysis bit. Thank you for the link Iain.

]]> By: Iain http://blog.juma.me.uk/2008/10/11/local-variables-scope-in-hotspot/#comment-36 Sat, 11 Oct 2008 10:11:36 +0000 http://ijuma.wordpress.com/?p=30#comment-36 You might be interested in the linked pdf on ‘Garbage Collection-Friendly Programming’, I’m thinking of slides 16 & 17. “Nulling references rarely helps the GC… The JIT can do liveness analysis…”

]]> By: Alan http://blog.juma.me.uk/2008/10/11/local-variables-scope-in-hotspot/#comment-35 Sat, 11 Oct 2008 08:24:10 +0000 http://ijuma.wordpress.com/?p=30#comment-35 This topic sometimes confuses developers that are analyzing heap dumps as they expect particular locals to be reported as roots but they aren’t present in the dump. When a debugger agent is running then you will notice that are locals do appear to be in scope. This is necessary to allow the developer access them in the debugger.

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