Re: [agtk-devel] wrapper overhead

[Haejoong L. <hae...@un...>]

Hi Steve,

I've managed to directly wrap AGAPI.h.  I'm attaching corresponding
swig interface file (AGAPI.i).  Mapping tcl array to c++ map was
a little tricky.  Only one function hasn't been wrapped; I still
need to write a typemap from c++ list to tcl/python list, which is
required to wrap StoreSQLs() function.  Another remaining task is
to make the new wrapper use a namespace.

I measured the performance change.  The improvement looks
significant (see below).  Any suggestions or questions are more
than welcome.

Thanks,
Haejoong


Your result with the old wrapper:
> getting start times for 3 nodes
> [::AG_GetAnchorOffset [::AG_GetStartAnchor $entry]]: 10650 microseconds per  
> teration
> [::AG_GetStartAnchor $entry]: 6104 microseconds per iteration

Using the old wrapper:
getting start times for 3 nodes
[AG_GetAnchorOffset [AG_GetStartAnchor $entry]]: 12630 microseconds per iteration
[AG_GetStartAnchor $entry]: 7498 microseconds per iteration

Using the new wrapper:
getting start times for 3 nodes
[GetAnchorOffset [GetStartAnchor $entry]]: 274 microseconds per iteration
[GetStartAnchor $entry]: 232 microseconds per iteration

5 nodes:
getting start times for 5 nodes
[GetAnchorOffset [GetStartAnchor $entry]]: 431 microseconds per iteration
[GetStartAnchor $entry]: 351 microseconds per iteration