low-latency GC

[Ola Fosheim Grostad]

On Sunday, 6 December 2020 at 08:36:49 UTC, Bruce Carneal wrote:
>> Yes, but they don't allow low level programming. Go also 
>> freeze to sync threads this has a rather profound impact on 
>> code generation. They have spent a lot of effort on  sync 
>> instructions in code gen to lower the latency AFAIK.
>
> So, much of the difficulty in bringing low-latency GC to dlang 
> would be the large code gen changes required.  If it is a 
> really big effort then that is all we need to know.  Not worth 
> it until we can see a big payoff and have more resources.

Well, you could in theory avoid putting owning pointers on the 
stack/globals or require that they are registered as gc roots. 
Then you don't have to scan the stack. All you need then is write 
barriers. IIRC