Disable GC entirely

[Paulo Pinto]

On Wednesday, 10 April 2013 at 11:00:17 UTC, Manu wrote:
> On 10 April 2013 20:53, Regan Heath <regan at netmail.co.nz> wrote:
>
>>
>> False.  In this first example we are compiling A and B 
>> together (into an
>> exe - I left that off) so the compiler has all sources and all 
>> uses of all
>> methods of A (and B).
>>
>
> And if the program calls LoadLibrary() somewhere?
>
>
>  notVirt is virtual.
>>>
>>
>> It may actually be (I don't know) but it certainly does not 
>> have to be
>> (compiler has all sources/uses) and my impression was that it 
>> /should/ not
>> be.
>
>
> It doesn't have all sources. It could load a library. That can 
> never be
> guaranteed.

That is the main reason why most JITs do code rewriting every 
time the world changes.

For example, on Hotspot, depending how many subclasses you have 
loaded many virtual calls are actually direct calls, until this 
is no longer possible and  code regeneration is required.

This of course works way better on server side, or with layered 
JITs like Java 7 has.

--
Paulo