mirror of https://github.com/zulip/zulip.git
134 lines
3.6 KiB
JavaScript
134 lines
3.6 KiB
JavaScript
/* WARNING:
|
|
|
|
This file is only included when Django's DEBUG = True and your
|
|
host is in INTERNAL_IPS.
|
|
|
|
Do not commit any code elsewhere which uses these functions.
|
|
They are for debugging use only.
|
|
|
|
The file may still be accessible under other circumstances, so do
|
|
not put sensitive information here. */
|
|
|
|
/*
|
|
print_elapsed_time("foo", foo)
|
|
|
|
evaluates to foo() and prints the elapsed time
|
|
to the console along with the name "foo". */
|
|
|
|
function print_elapsed_time(name, fun) {
|
|
var t0 = new Date().getTime();
|
|
var out = fun();
|
|
var t1 = new Date().getTime();
|
|
console.log(name + ': ' + (t1 - t0) + ' ms');
|
|
return out;
|
|
}
|
|
|
|
function check_duplicate_ids() {
|
|
var ids = {};
|
|
var collisions = [];
|
|
var total_collisions = 0;
|
|
|
|
Array.prototype.slice.call(document.querySelectorAll("*")).forEach(function (o) {
|
|
if (o.id && ids[o.id]) {
|
|
var el = collisions.find(function (c) {
|
|
return c.id === o.id;
|
|
});
|
|
|
|
ids[o.id] += 1;
|
|
total_collisions += 1;
|
|
|
|
if (!el) {
|
|
var tag = o.tagName.toLowerCase();
|
|
collisions.push({
|
|
id: o.id,
|
|
count: 1,
|
|
node: "<" + tag + " className='" + o.className + "' id='" + o.id + "'>" +
|
|
"</" + tag + ">",
|
|
});
|
|
} else {
|
|
el.count += 1;
|
|
}
|
|
} else if (o.id) {
|
|
ids[o.id] = 1;
|
|
}
|
|
});
|
|
|
|
return {
|
|
collisions: collisions,
|
|
total_collisions: total_collisions,
|
|
};
|
|
}
|
|
|
|
/* An IterationProfiler is used for profiling parts of looping
|
|
* constructs (like a for loop or _.each). You mark sections of the
|
|
* iteration body and the IterationProfiler will sum the costs of those
|
|
* sections over all iterations.
|
|
*
|
|
* Example:
|
|
*
|
|
* var ip = new IterationProfiler();
|
|
* _.each(myarray, function (elem) {
|
|
* ip.iteration_start();
|
|
*
|
|
* cheap_op(elem);
|
|
* ip.section("a");
|
|
* expensive_op(elem);
|
|
* ip.section("b");
|
|
* another_expensive_op(elem);
|
|
*
|
|
* ip.iteration_stop();
|
|
* });
|
|
* ip.done();
|
|
*
|
|
* The console output will look something like:
|
|
* _iteration_overhead 0.8950002520577982
|
|
* _rest_of_iteration 153.415000159293413
|
|
* a 2.361999897402711
|
|
* b 132.625999901327305
|
|
*
|
|
* The _rest_of_iteration section is the region of the iteration body
|
|
* after section b.
|
|
*/
|
|
function IterationProfiler() {
|
|
this.sections = {};
|
|
this.last_time = window.performance.now();
|
|
}
|
|
|
|
IterationProfiler.prototype = {
|
|
iteration_start: function () {
|
|
this.section('_iteration_overhead');
|
|
},
|
|
|
|
iteration_stop: function () {
|
|
var now = window.performance.now();
|
|
var diff = now - this.last_time;
|
|
if (diff > 1) {
|
|
if (this.sections._rest_of_iteration === undefined) {
|
|
this.sections._rest_of_iteration = 0;
|
|
}
|
|
this.sections._rest_of_iteration += diff;
|
|
}
|
|
this.last_time = now;
|
|
},
|
|
|
|
section: function (label) {
|
|
var now = window.performance.now();
|
|
if (this.sections[label] === undefined) {
|
|
this.sections[label] = 0;
|
|
}
|
|
this.sections[label] += (now - this.last_time);
|
|
this.last_time = now;
|
|
},
|
|
|
|
done: function () {
|
|
this.section('_iteration_overhead');
|
|
var prop;
|
|
|
|
for (prop in this.sections) {
|
|
if (this.sections.hasOwnProperty(prop)) {
|
|
console.log(prop, this.sections[prop]);
|
|
}
|
|
}
|
|
},
|
|
};
|