/*

* Test using timers and intervals.

*/

function main() {

var i;

var counters = [];

var ntimers = 0;

print('set interval timer');

var intervalTimer = setInterval(function () {

print(new Date().toISOString() + ': timers pending: ' + ntimers);

if (ntimers === 0) {

clearInterval(intervalTimer);

}

}, 500);

function addTimer(interval) {

ntimers++;

setTimeout(function () {

ntimers--;

}, interval);

}

/* Here the inserts take a lot of time because the underlying timer manager

* data structure has O(n) insertion performance.

*/

print('launch timers');

for (i = 0; i < 4000; i++) {

// Math.exp(0)...Math.exp(8) is an uneven distribution between 1...~2980.

addTimer(16000 - Math.exp(Math.random() * 8) * 5);

}

print('timers launched');

}

try {

main();

} catch (e) {

print(e.stack || e);

}