Pay as you go is really going to make a difference

H. S. Teoh hsteoh at
Fri Jan 24 18:24:03 UTC 2020

On Fri, Jan 24, 2020 at 08:06:33AM -0500, Steven Schveighoffer via Digitalmars-d wrote:
> On 1/24/20 4:52 AM, Johan Engelen wrote:
> > Indeed. Also to figure out why LDC's binary calls 31 more than DMD's
> > binary.
> Most likely it's the runtime startup. Obviously sbrk quite a bit, but
> any runtime initialization (thread startup, mutex initialization, etc)
> are all going to go in there. Think of what the GC has to do!

It makes me wonder how much we can make all this startup stuff
pay-as-you-go.  I mean, IIRC, isn't the GC lazily initialized now? I
vaguely remember some PR along that direction. Or was it the pool

I suppose thread startup would be hard to elide, unless there was a way
to initialize the thread stuff only on demand. Ditto for mutex inits.
But it might not be worth the effort for such minimal benefits in such a
marginal test case.


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