shaka-packager/tools/page_cycler/common/head.js

129 lines
3.2 KiB
JavaScript

// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
var __c = ""; // that's good enough for me.
var __td;
var __tf;
var __tl;
var __iterations;
var __cycle;
var __results = false;
var __page;
var __TIMEOUT = 15;
function __get_cookie(name) {
var cookies = document.cookie.split("; ");
for (var i = 0; i < cookies.length; ++i) {
var t = cookies[i].split("=");
if (t[0] == name && t[1])
return t[1];
}
return "";
}
function __pages() { // fetch lazily
if (!("data" in this))
this.data = __get_cookie("__pc_pages").split(",");
return this.data;
}
function __get_timings() {
if (sessionStorage != null &&
sessionStorage.getItem("__pc_timings") != null) {
return sessionStorage["__pc_timings"];
} else {
return __get_cookie("__pc_timings");
}
}
function __set_timings(timings) {
if (sessionStorage == null)
document.cookie = "__pc_timings=" + timings + "; path=/";
else
sessionStorage["__pc_timings"]=timings;
}
function __ontimeout() {
var doc;
// Call GC twice to cleanup JS heap before starting a new test.
if (window.gc) {
window.gc();
window.gc();
}
var timings = __tl;
var oldTimings = __get_timings();
if (oldTimings != "") {
timings = oldTimings + "," + timings;
}
__set_timings(timings);
var ts = (new Date()).getTime();
var tlag = (ts - __te) - __TIMEOUT;
if (tlag > 0)
__tf = __tf + tlag;
if (__cycle == (__pages().length * __iterations)) {
document.cookie = "__pc_done=1; path=/";
doc = "../../common/report.html";
if (window.console) {
console.log("Pages: [" + __get_cookie('__pc_pages') + "]");
console.log("times: [" + __get_timings() + "]");
}
} else {
doc = "../" + __pages()[__page] + "/index.html";
}
var url = doc + "?n=" + __iterations + "&i=" + __cycle + "&p=" + __page +
"&ts=" + ts + "&td=" + __td + "&tf=" + __tf;
document.location.href = url;
}
function __onload() {
if (__results) {
// Set a variable to indicate that the result report page is loaded.
document.cookie = "__navigated_to_report=1; path=/";
return;
}
var unused = document.body.offsetHeight; // force layout
var ts = 0, td = 0, te = (new Date()).getTime(), tf = 0;
var s = document.location.search;
if (s) {
var params = s.substring(1).split('&');
for (var i = 0; i < params.length; ++i) {
var f = params[i].split('=');
switch (f[0]) {
case 'skip':
// No calculation, just viewing
return;
case 'n':
__iterations = f[1];
break;
case 'i':
__cycle = (f[1] - 0) + 1;
break;
case 'p':
__page = ((f[1] - 0) + 1) % __pages().length;
break;
case 'ts':
ts = (f[1] - 0);
break;
case 'td':
td = (f[1] - 0);
break;
case 'tf':
tf = (f[1] - 0);
break;
}
}
}
__tl = (te - ts);
__td = td + __tl;
__te = te;
__tf = tf; // record t-fudge
setTimeout("__ontimeout()", __TIMEOUT);
}
if (window.attachEvent)
window.attachEvent("onload", __onload);
else
addEventListener("load", __onload, false);