Concurrent GC (for Windows)

[Rainer Schuetze via Digitalmars-d]

On 15.06.2014 23:30, Martin Nowak wrote:
> On 06/04/2014 10:37 PM, Rainer Schuetze wrote:
>> Most of the remaining pause time is sweeping garbage. I think about
>> deferring sweeping into allocations by running finalizers just before
>> reusing the memory for another object. This can throttle allocations a
>> bit while at the same time reduce pauses.
>
> That's pausing the thread which triggered the collection, right?
> Other threads don't need to wait for sweeping.

Yes, the world is not stopped during sweeping. The GC lock still blocks 
any thread that tries to allocate, though.

> Dividing the cost to run finalizers among many allocations is a charming
> idea.

Another nice property: If memory is recycled during malloc, you can run 
the finalizers without the GC lock held just before returning, so there 
are less restrictions on what can happen in a destructor.