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var Threads= require('webworker-threads');
function cb (err, msg) {
i++;
threads[this.id]++;
this.eval(source, cb);
//process.stdout.write('['+ this.id+ ']');
}
function ƒ () { }
var source= "ƒ()";
var i= +process.argv[2] || 1;
console.log('Using '+ i+ ' threads');
var threads= [];
while (i--) {
threads[i]= 0;
Threads.create().eval(ƒ)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb)
.eval(source, cb);
process.stdout.write('.');
}
i= 0;
var t= Date.now();
function display () {
var e= Date.now()- t;
var tps= (i*1e3/e).toFixed(1);
process.stdout.write('\nt (ms) -> '+ e+ ', i -> '+ i+ ', tps -> '+ tps+ ', [ '+ threads.map(percent)+ ' ]');
function percent (v) {
return Math.round(v/i*100);
}
}
setInterval(display, 1e3);
function pi () {
var π= 0;
var num= 4;
var den= 1;
var plus= true;
while (den < 1e6) {
if (plus) {
π+= num/den;
plus= false;
}
else {
π-= num/den;
plus= true;
}
den+= 2;
}
return π;
}
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