A JavaScript concurrency library based on the join calculus.
The join calculus is a formal model for message passing concurrency. The name comes from its most powerful feature: join patterns (also known as chords). In the join calculus, programs do not actively request to receive a messages on a certain channel. Instead, they use join patterns, which declaratively specify reactions to specific message patterns (much like method declarations in object-oriented programming). The power of join patterns is that they can be used to atomically process messages from multiple channels.
Creating channels:
var joins = require('jsjoins');
var mySyncChannel = joins.Channel();
var myAsyncChannel = joins.AsyncChannel();Sending messages:
mySyncChannel('hello!');
mySyncChannel({description: 'whatever'});
myAsyncChannel.send('hello!');
myAsyncChannel.send(99);Join patterns:
joins.when(mySyncChannel).do(function() {
console.log('simple handler');
});
joins.when(mySyncChannel).and(myAsyncChannel).do(function() {
return 'value returned to synchronous send';
});