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.
