low-latency GC

[Bruce Carneal]

On Sunday, 6 December 2020 at 08:59:49 UTC, Ola Fosheim Grostad 
wrote:
> 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

'shared' with teeth?