Does the D teams would like to increase the WASM support

[Paulo Pinto]

On Friday, 18 November 2022 at 02:06:41 UTC, Adam D Ruppe wrote:
> On Thursday, 17 November 2022 at 23:31:27 UTC, H. S. Teoh wrote:
>> Not sure how we'd do the GC part, though.
>
> The stock druntime gc works so long as the wasm stack is empty. 
> llvm offers a shadow stack for this purpose, or I'm pretty sure 
> (and Sebastiaan agrees, we've both been swamped with day job 
> work but we chat every now and then a little) it'd work if we 
> deferred the mark/sweep for when the wasm stack is empty.
>
> In other words, GC.collect would always ask for new memory from 
> the system as if the collection failed, but then queue it - 
> javascript `setTimeout(GC.collect, 0);` would do the job. Then 
> it collects when back to the event loop thus knowing the wasm 
> work is paused and the call stack empty, so all stored values 
> are available from memory.
>
> Just like I said, I'm pretty swamped with work.... and when not 
> doing work I have a million other things to do. I have some use 
> case for webasm - it is kinda cool to put my little demo games 
> online - but it isn't a high priority.

Other approaches would be to look into Java, Flash (yep), Go and 
.NET, all of them already have mature WebAssembly 
implementations, with working GCs.