ThreadLocalRandom clinit troubles

Peter Levart peter.levart at
Mon Jul 14 16:59:03 UTC 2014

Hi Sean, Alex

Here's a sum-up post:

Regards, Peter

On 07/14/2014 04:44 PM, Sean Mullan wrote:
> I don't see a pointer to the webrev/patch -- did you forget to include 
> it?
> --Sean
> On 07/11/2014 07:33 PM, Martin Buchholz wrote:
>> Thanks to Peter for digging into the secure seed generator classes and
>> coming up with a patch.  Openjdk security folks, please review. I 
>> confess
>> to getting lost whenever I try to orient myself in the twisty maze of 
>> seed
>> generator implementation files.
>> Anyways, it seems important to have prngs like ThreadLocalRandom be 
>> able to
>> get a few bits of seed entropy without loading hundreds of classes and
>> without occupying any file descriptors permanently.  Perhaps at 
>> Google we
>> will go back to writing some simple non-portable startup code to read
>> /dev/urandom until openjdk security team comes up with a more principled
>> solution (but one that doesn't drag in too much machinery).

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