D garbage collector and real-time systems

[Guillaume Piolat via Digitalmars-d]

On Wednesday, 28 January 2015 at 08:12:25 UTC, Mike wrote:
> On Wednesday, 28 January 2015 at 06:58:42 UTC, Tom wrote:
>>
>> Or is there now the possibility of disabling the GC altogether,
>> or replacing it with a refcounting 'GC' etc?
>
> You can disable the GC:  
> http://dlang.org/phobos/core_memory.html#.GC.disable
>


I think it's important to note that there is three ways to go to 
minimize GC impact, by order of increasing difficulty:

1. Minimize allocations andthe size of scanned heap. This allows 
to still use the GC which is handy. Stay at this level if you 
need only speed.

2. Not enabling the runtime. This forces you to be fully @nogc 
but using the GC is a runtime error instead of a link error. Stay 
at this level if you need reduced memory consumption.

3. Not link with the runtime, or link with a minimal runtime. 
This is the hardest way and yield smaller binary size of all, 
along with the speed and reduced memory consumption.

GC avoidance is a spectrum.