worker-function
Version:
Create functions executed within a web worker and return promises
108 lines (96 loc) • 3.36 kB
HTML
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>WorkerFunction Demo</title>
</head>
<body>
<div id="exampleRunResult">Running tests...</div>
<button id="run">Run benchmark</button>
<div id="benchmarkResults"></div>
</body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/es6-promise/4.1.1/es6-promise.auto.js"></script>
<script src="./WorkerFunction.js"></script>
<script>
var resultOut = document.getElementById('exampleRunResult');
// Let's create a new worker
var workerSum = WorkerFunction(function (arg1, arg2, done) {
// Worker execution can be async,
// don't forget to call `done`
setTimeout( function(){ done(arg1 + arg2) }, 500);
});
// workerSum is used in a new thread
// and return a promise with the result
var result =
workerSum(2, 3).then( function(result) {
if (result === 5) {
resultOut.innerHTML = '<p style="background: green; color: #FFF; padding: 20px;"> ✔ Works fine on browser.</p>';
} else {
resultOut.innerHTML = '<p style="background: red; color: #FFF; padding: 20px;"> ✘ Works fine on browser.</p>';
}
});
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/platform/1.3.5/platform.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/2.1.4/benchmark.js"></script>
<script>
// Run benchmark code
document.getElementById('run').addEventListener('click', runBenchmark);
var running = false;
var resultsOut = document.getElementById('benchmarkResults');
function printOut( result ){
let p = document.createElement('p');
p.innerHTML = String( result );
resultsOut.appendChild(p);
}
function runBenchmark(){
if( running ) return;
resultsOut.innerHTML = 'Running...';
function iterate() {
var sum;
for (var i = 0; i < 100000; i++) {
sum++;
}
return sum;
}
var wf = WorkerFunction(function (done) {
var sum;
for (var i = 0; i < 100000; i++) {
sum++;
}
done(sum);
});
var pf = function () {
return Promise.resolve(iterate());
}
var suite = new Benchmark.Suite();
suite
.add('Worker function', {
defer: true,
fn: deferred => {
wf().then(() => deferred.resolve());
}
})
.add('Promise function', {
defer: true,
fn: deferred => {
wf().then(() => deferred.resolve());
}
})
.add('Direct call', () => {
iterate();
})
.on('cycle', function (event) {
printOut( String(event.target) );
})
.on('complete', function () {
running = false;
printOut('Finished.');
})
.run({ defer: true })
;
}
</script>
</html>