Getting memory size of class

Simen Kjaeraas simen.kjaras at gmail.com
Wed Dec 5 11:08:16 PST 2012


On 2012-12-05, 20:03, js.mdnq wrote:

>
> sizeof always returns 4 or 8 regardless of size of class:
>
> class myclass(T)
> {
> public:
>     T v1;
>     T v2;
>     T v3;
>     T v4;
>     T v5;
>     T v6;
> }
>
> writeln((myclass!byte).sizeof, (myclass!double).sizeof);
>
> or even
>
> writeln((myclass!int).classinfo.init.sizeof,  
> (myclass!double).classinfo.init.sizeof);
>
> from
>
> http://forum.dlang.org/thread/dp9hct$nuf$1@digitaldaemon.com
>
> So how does one get the actual memory usage of a class?

__traits( classInstanceSize, myclass!int )

http://dlang.org/traits.html

-- 
Simen


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