On Friday, January 16, 2015 at 4:26:30 PM UTC-5, Stefan Karpinski wrote: > > This is super cool. I wonder if it wouldn't be possible allow Julia to > operate on JavaScript typed arrays in-place? >
Hmm, maybe! With some caveats first the good news. Here's where the Javascript array buffer is obtained <https://github.com/waTeim/node-julia/blob/master/src/NativeArray.h#L59> Here's the relevant part of the copy from Javascript to C++: it's ptr to ptr <https://github.com/waTeim/node-julia/blob/master/src/request.cpp#L225> And here it is again from C++ to julia a buffer handoff <https://github.com/waTeim/node-julia/blob/master/src/rvalue.cpp#L175> Caveats. this is all happening in separate threads v8 has its own memory management, however, ArrayBuffers can be neutered <https://github.com/joyent/node/blob/master/deps/v8/include/v8.h#L2761> node heap size is 2G, having but maybe neutering means it no longer takes part in the calculations Javascript Typed arrays are 1D only. there's implicit row-major to column major transformation going on So multidimensional stuff might be a pain, but vector transfer of ownership? yea probably.
