Concern about dmd memory usage on win32

[Dmitry Olshansky]

12/7/2012 6:23 PM, monarch_dodra пишет:
> In particular, when compiling "-unittest std\algorithm.d", dmd uses
> *nearly* 1 GB (it uses about 1,051,176K on my machine).
>
> Problem is that when it reaches 1GB, it crashes. I have a pull request
> which adds a few unittests to algorithm, and it is consistently crashing
> on win32 with an out of memory error.

Yup, it dies the same way on auto-tester for my pull.

>
> In layman's terms: std\algorithm.d is full. You literally can't add any
> more unittests to it, without crashing dmd on win32.
>
> I'd have recommended splitting the unittests in sub-modules or whatnot,
> but come to think about it, I'm actually more concern that a module
> could *singlehandedly* make the compiler crash on out of memory...
>
> Also, I'm no expert, but why is my dmd limited to 1 GB memory on my 64
> bit machine...?

It's not large address-space aware (a matter of a proper bit set in PE 
header) thus is limited to 2Gb.  The other part of problem has to do 
with the way DMC run-time allocates virtual memory. Somebody fixed it 
but the patch failed to get any recognition.

-- 
Dmitry Olshansky