Re: shared array?

[Laeeth Isharc via Digitalmars-d-learn]

On Monday, 14 September 2015 at 00:53:58 UTC, Jonathan M Davis 
wrote:
Only the stack and the GC heap get scanned unless you tell the 
GC about memory that was allocated by malloc or some other 
mechanism. malloced memory won't be scanned by default. So, if 
you're using the GC minimally and coding in a way that doesn't 
involve needing to tell the GC about a bunch of malloced 
memory, then the GC won't have all that much to scan. And while 
the amount of memory that the GC has to scan does affect the 
speed of a collection, in general, the less memory that's been 
allocated by the GC, the faster a collection is.

Idiomatic D code uses the stack heavily and allocates very 
little on the GC heap.
...
So, while the fact that D's GC is less than stellar is 
certainly a problem, and we would definitely like to improve 
that, the idioms that D code typically uses seriously reduce 
the number of performance problems that we get.

- Jonathan M Davis

Thank you for your posts on this (and the others), Jonathan.  I 
appreciate your taking the time to write so carefully and 
thoroughly, and I learn a lot from reading your work.