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Auto merge of #12449 - servo:jdm-patch-1, r=Ms2ger

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Add a manual test for measuring DOM binding performance

This is the test harness I've been using for profiling and measuring in #12354.

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bors-servo 2016-07-15 02:21:19 -07:00 • committed by GitHub
commit f2efc0011a
1 changed files with 36 additions and 0 deletions
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tests/html/bindings_perf.html Normal file
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<button onclick="void_method()">measure void method</button>
<button onclick="int_getter()">measure int getter</button>
<button onclick="firstChild_getter()">measure firstChild getter</button>
<script>
var t = 'TestBinding' in window ? (new TestBinding()) : (new TextEncoder());
function void_method() {
var start = new Date();
var count = 1000000;
for (var i = 0; i < count; i++) {
var a = t.receiveVoid();
}
var stop = new Date();
console.log('void method: ' + ((stop - start) / count * 1e6) + 'ns');
}
function int_getter() {
var start = new Date();
var count = 1000000;
for (var i = 0; i < count; i++) {
var a = t.longAttribute;
}
var stop = new Date();
console.log('int getter: ' + ((stop - start) / count * 1e6) + 'ns');
}
function firstChild_getter() {
var n = document.documentElement;
var start = new Date();
var count = 100000000;
for (var i = 0; i < count; i++) {
var a = n.firstChild;
}
var stop = new Date();
console.log('firstChild getter: ' + ((stop - start) / count * 1e6) + 'ns');
}
</script>