Hi,

recently I've been experimenting with metaprogramming in D. I've been trying to create a simple compiler benchmark that can be used like the following oversimplified code:

const time starttime = gettime();
mixin(code); // or any other metaprogramming activity (or even simple code)
const time endtime = gettime();
pragma(msg, "Compiled in ", endtime - starttime);

It works fine with the exception of getting the current time. Unfortunately, I've found no ctfe-capable library function to get the time, and it turned out that special tokens like __TIME__ and its kind are evaluated once during compilation, so it always returns the same time for the same compilation unit.

Do you have any idea how to get the time in compile-time?

thanks

István

On Tue, 23 Mar 2010 08:35:54 +0100, Zólyomi Istvan <istvan.zolyomi@gmail.com> wrote:

> Hi,
>
> recently I've been experimenting with metaprogramming in D. I've been trying to create a simple compiler benchmark that can be used like the following oversimplified code:
>
> const time starttime = gettime();
> mixin(code); // or any other metaprogramming activity (or even simple code)
> const time endtime = gettime();
> pragma(msg, "Compiled in ", endtime - starttime);
>
> It works fine with the exception of getting the current time. Unfortunately, I've found no ctfe-capable library function to get the time, and it turned out that special tokens like __TIME__ and its kind are evaluated once during compilation, so it always returns the same time for the same compilation unit.
>
> Do you have any idea how to get the time in compile-time?
>
> thanks
>
> István

Currently not possible, as far as I know.

If you must, try instead to make a tiny program that launches DMD,
and times its running time.

-- 
Simen

Hello Simen,

> On Tue, 23 Mar 2010 08:35:54 +0100, Zólyomi Istvan
> <istvan.zolyomi@gmail.com> wrote:
> 
>> Hi,
>> 
>> recently I've been experimenting with metaprogramming in D. I've been
>> trying to create a simple compiler benchmark that can be used like
>> the  following oversimplified code:
>> 
>> const time starttime = gettime();
>> mixin(code); // or any other metaprogramming activity (or even simple
>> code)
>> const time endtime = gettime();
>> pragma(msg, "Compiled in ", endtime - starttime);
>> It works fine with the exception of getting the current time.
>> Unfortunately, I've found no ctfe-capable library function to get the
>> time, and it turned out that special tokens like __TIME__ and its
>> kind  are evaluated once during compilation, so it always returns the
>> same  time for the same compilation unit.
>> 
>> Do you have any idea how to get the time in compile-time?
>> 
>> thanks
>> 
>> István
>> 
> Currently not possible, as far as I know.
> 
> If you must, try instead to make a tiny program that launches DMD, and
> times its running time.
> 

Or grab an existing one (*nix has 'time' for that).


-- 
... <IXOYE><