A simple proof-of-concept javascript fiber module using es6 generators and Promises.
let Scheduler = require('microfiber');
function somethingAsync(resolve, reject) {
let delay = 500 + Math.random() * 1000;
setTimeout(function done() {
console.log('async done!');
resolve(delay);
}, delay);
}
function* myWork(i) {
while (i-- > 0) {
console.log('step', i);
yield new Promise(somethingAsync);
}
console.log('done!');
}
function* master() {
console.log('starting master fibers...');
var scheduler = new Scheduler();
scheduler.add(myWork(3), 'sub job 1');
scheduler.add(myWork(3), 'sub job 2');
yield scheduler.run();
}
console.log('starting fibers...');
var scheduler = new Scheduler();
scheduler.add(myWork(5), 'myWork');
scheduler.add(myWork(5), 'myWork');
scheduler.add(master(), 'master');
scheduler.run().then(
function pass(val) {
console.log('ran', val, 'tasks');
},
function fail(err) {
console.log('error in tasks:', err);
}
);MIT.