Porting to Emscripten • Hacker News Board

Re: Porting to Emscripten

#11

Post by hippich » Wed, Nov 05, 2014, 5:28 AM UTC

captaincrowbar wrote: post #8

This looked like great news until I came to "Heavy use of threads is also going to be a problem since Emscripten doesn't currently support them." Sorry, this is a total showstopper for me. I'll check back when Emscripten actually lets me use more than 1/4 or 1/8 of the CPU.

It already does - just run your code in webworker. I am doing it at https://hashcash.io/

Detection of number of available cores is totally different problem. On the other hand, probably detecting number of cores should not be used in first place..

Re: Porting to Emscripten

#12

Post by flohofwoe » Wed, Nov 05, 2014, 11:13 AM UTC

Shameless plug for my MIT licensed, experimental, mini C++11 multiplatform engine which has been designed specifically with emscripten in mind: http://floooh.github.io/oryol/

Re: Porting to Emscripten

#13

Post by marcosscriven » Wed, Nov 05, 2014, 8:50 PM UTC

captaincrowbar wrote: post #8

This looked like great news until I came to "Heavy use of threads is also going to be a problem since Emscripten doesn't currently support them." Sorry, this is a total showstopper for me. I'll check back when Emscripten actually lets me use more than 1/4 or 1/8 of the CPU.

You can use the other core, but you have to think of them a little like separate machines. They can't share memory, but you can pass messages between them very fast (using JS's underlying Trasferale Objects) If you can use bump/frame allocators those 'messages' can be whole chunks of 'memory'.

Re: Porting to Emscripten

#14

Post by marcosscriven » Wed, Nov 05, 2014, 8:52 PM UTC

bobajeff wrote: post #10

captaincrowbar wrote: post #8

This looked like great news until I came to "Heavy use of threads is also going to be a problem since Emscripten doesn't currently support them." Sorry, this is a total showstopper for me. I'll check back when Emscripten actually lets me use more than 1/4 or 1/8 of the CPU.

According to this document Jukka Jylänki is working on it: https://docs.google.com/spreadsheets/d/t3AwIGGaM-4Z9UZM2jpF6...

Oooh - how did you come across that? I had an idea for a way to do this https://groups.google.com/forum/#!searchin/emscripten-discus...