LWDR (Light Weight D Runtime) for Microcontrollers v0.2.3

[Dukc]

On Sunday, 30 May 2021 at 14:28:25 UTC, Dylan Graham wrote:
> Hi, all!
> This is LWDR (Light Weight D Runtime) It is a ground-up 
> implementation of a D runtime targeting the ARM Cortex-M 
> microcontrollers and other microcontroller platforms with 
> RTOSes (Real Time Operating Systems).

Sounds very useful! However, first thing first: What's the 
license? DUB package says it's FOSS. Great, but what kind of 
FOSS? It makes a big difference whether it's GNU or BSD, for 
instance.

>
> It doesn't, and possibly may not, support all D features in 
> order to make it viable for the constrained environments. For 
> example, all memory allocation is manually done via `new` and 
> `delete` - no GC.

Regarding `new` - is there a good way to iterate though chunks 
allocated with `new`? One could call an unmodified piece of D 
code that normally uses the GC, and then manually free all it's 
allocations.

>
> It works by providing a series of barebones API hooks (alloc, 
> dealloc, assert, etc) (defined in `rtoslink.d`), which you must 
> implement and/or point to your RTOS implementation.

Quickly looking, the implementation looks very portable, save for 
exceptions. with `rtoslink.d`, this will probably enable a lot of 
stuff on any platform without DRuntime. Not just 
microcontrollers. If I'm right, you just did a BIG service for D 
on bare-metal.

> It is beta, so expect bugs.

And open source, so the bugs can be fixed as discovered :-). 
Thanks for the warning anyway.