DMD profiler very slow

[Koroskin Denis]

On Sat, 12 Jul 2008 20:25:41 +0400, Clemens Hofreither  
<clemens.hofreither at gmx.net> wrote:

> Koroskin Denis Wrote:
>
> [....snip....]
>
>> >
>> > Hm, something like that might be doable, though it's certainly  
>> annoying.
>> > Can I compile some modules with "-profile" and some without, and the
>> > linker will "do the right thing"?
>> >
>> > -Clemens
>>
>> Yes, you can. Some module will get instrumented, while others wont.
>> You can have a look into profiler implementation in  
>> phobos/internal/trace.d
>>
>> You can write your own implementation, too!
>
> Hm, that's very interesting, I had no idea that part was open source.  
> I'm a bit unclear on how it all fits together though, especially since I  
> use Tango. I'm guessing the compiler inserts calls to certain functions  
> in trace.d if it is invoked with the "-profile" switch? If so, where  
> does that object code reside in my dmd installation? My dmd/import/std  
> directory contains only very little stuff, and this doesn't seem to be  
> there. So I'm guessing it must be in dmd/lib, but there is no phobos.lib  
> there. Is that part compiled into one of the Tango libraries when I use  
> Tango? If so, shouldn't that code be in the Tango repository somewhere  
> too? Couldn't find it there, either.
>
> Sorry for that slew of questions...
>
> -Clemens

That's ok. The implementation is compiled into snn.lib