767d747f71
This implements the missing shadowing checks that were causing us to take many slow paths when dealing with proxy objects. Verified by running `tests/html/binding_perf.html` before and after and observing a 12x improvement. --- - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #12357 - [X] These changes do not require tests because we can't test performance yet. Source-Repo: https://github.com/servo/servo Source-Revision: 78344754826e938c004a83a21c898552a8e77b17
49 lines
1.4 KiB
HTML
49 lines
1.4 KiB
HTML
<button onclick="void_method()">measure void method</button>
|
|
<button onclick="int_getter()">measure int getter</button>
|
|
<button onclick="firstChild_getter()">measure firstChild getter</button>
|
|
<button onclick="proxy_firstChild_getter()">measure proxy 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');
|
|
}
|
|
|
|
function proxy_firstChild_getter() {
|
|
var n = document;
|
|
var start = new Date();
|
|
var count = 1000000;
|
|
for (var i = 0; i < count; i++) {
|
|
var a = n.firstChild;
|
|
}
|
|
var stop = new Date();
|
|
console.log('proxy firstChild getter: ' + ((stop - start) / count * 1e6) + 'ns');
|
|
}
|
|
</script>
|