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[tools] Adding ICE, the IC-Explorer. 

Is it frozen water? Is it a train? No, but it's both (relatively) fast and
(relatively) cool, it's ICE, the IC-Explorer. Upload an IC trace and you can
easily* drill-down on where most IC changes happen. It even comes with a colored
title and runs in your favourite browser without dependencies (yeah, I'm looking
at you JQuery!)

*according to a user study with a random 1-person group.

R=mvstanton@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1618213003

Cr-Commit-Position: refs/heads/master@{#33467}
parent 42630a82
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<html>
<head>
<style>
.entry-details {
}
.entry-details TD {
}
.details {
width: 2em;
border: 1px black dotted;
}
.count {
text-align: right;
width: 5em;
font-family: monospace;
}
.percentage {
text-align: right;
width: 5em;
font-family: monospace;
}
.key {
padding-left: 1em;
}
</style>
<script>
"use strict"
var entries = [];
class Entry {
constructor(id, line) {
this.id = id;
var parts = line.split(" ");
this.isValid = false;
if (parts[0][0] !== "[") return;
if (parts[1] === "patching") return;
this.type = parts[0].substr(1);
this.category = "Other";
if (this.type.indexOf("Store") !== -1) {
this.category = "Store";
} else if (this.type.indexOf("Load") !== -1) {
this.category = "Load";
}
if (this.type.length == 0) return;
if (this.type.indexOf('BinaryOpIC(') === 0) {
this.type = "BinaryOpIC";
this.isNative = parts[8] == "native"
var offset = this.isNative ? 1 : 0;
var split = parts[0].split('(');
this.state = "(" + split[1] + " => " + parts[2];
this.position = parts[6];
this.file = parts[8 + offset];
this.file = this.file.slice(0,-1);
} else {
this.position = parts[2];
this.isNative = parts[4] == "native"
var offset = this.isNative ? 1 : 0;
this.file = parts[4 + offset];
this.state = parts[5 + offset];
if (this.type !== "CompareIC") {
// if there is no address we have a smi key
var address = parts[6 + offset];
if (address !== undefined && address.indexOf("0x") === 0) {
this.key = parts.slice(7 + offset).join(" ");
} else {
this.key = address;
}
}
}
this.filePosition = this.file + " " + this.position;
this.isValid = true;
if (this.key) {
var isStringKey = false
if (this.key.indexOf("<String[") === 0) {
isStringKey = true;
this.key = "\"" + this.key.slice(this.key.indexOf(']')+3);
} else if (this.key.indexOf("<") === 0) {
this.key = this.key.slice(1);
}
if (this.key.endsWith(">]")) {
this.key = this.key.slice(0, -2);
} else if (this.key.endsWith("]")) {
this.key = this.key.slice(0, -1);
}
if (isStringKey) {
this.key = this.key + "\"";
}
}
}
}
function updateSize() {
var files = document.getElementById("uploadInput").files;
var file = files[0];
var reader = new FileReader();
reader.onload = function(evt) {
entries = [];
var end = this.result.length;
var current = 0;
var next = 0;
var line;
var i = 0;
var entry;
while (current < end) {
next = this.result.indexOf("\n", current);
if (next === -1) break;
i++;
line = this.result.substring(current, next);
current = next+1;
entry = new Entry(i, line);
if (entry.isValid) entries.push(entry);
}
document.getElementById("count").innerHTML = i;
updateTable();
}
reader.readAsText(file);
initGroupKeySelect();
}
var properties = ['type', 'category', 'file', 'filePosition', 'state' , 'key', 'isNative']
function groupBy(entries, property, subGroup) {
var accumulator = {};
accumulator.__proto__ = null;
var length = entries.length;
for (var i = 0; i < length; i++) {
var entry = entries[i];
var key = entry[property];
if (accumulator[key] == undefined) {
accumulator[key] = { key: key, count: 1, entries: [ entry ]};
} else {
var record = accumulator[key];
if (record.entries == undefined) console.log([record, entry]);
record.count ++;
record.entries.push(entry)
}
}
var result = []
for (var key in accumulator) {
var record = accumulator[key];
record.percentage = Math.round(record.count / length * 100 * 100) / 100;
if (subGroup) subGroupBy(record, property);
result.push(record);
}
result.sort((a,b) => { return b.count - a.count });
return result;
}
function subGroupBy(record, originalProperty) {
record.groups = {};
for (var i=0; i<properties.length; i++) {
var property = properties[i];
if (property == originalProperty) continue;
record.groups[property] = groupBy(record.entries, property, false);
}
}
function updateTable() {
var select = document.getElementById("group-key");
var key = select.options[select.selectedIndex].text;
console.log(key);
var tableBody = document.getElementById("table-body");
removeAllChildren(tableBody);
display(groupBy(entries, key, true), tableBody, true);
}
function selecedOption(node) {
return node.options[node.selectedIndex]
}
function removeAllChildren(node) {
while (node.firstChild) {
node.removeChild(node.firstChild);
}
}
function display(entries, parent, showDetails) {
if (showDetails) {
console.log(entries)
}
var fragment = document.createDocumentFragment();
function td(tr, content, className) {
var td = document.createElement("td");
td.innerHTML = content;
td.className = className
tr.appendChild(td);
return tr
}
function drillDown(entry, tr) {
tr.id = "details-" + i;
tr.className = "entry-details";
tr.style.display = "none";
tr.appendChild(document.createElement("td"));
var td = document.createElement("td");
td.colSpan = 3;
for (var key in entry.groups) {
td.appendChild(drillDownGroup(entry, key));
}
tr.appendChild(td);
}
function drillDownGroup(entry, key) {
var group = entry.groups[key];
var div = document.createElement("div")
div.innerHTML = key;
var table = document.createElement("table");
display(group.slice(0, 20), table, false)
div.appendChild(table);
return div;
}
for (var i = 0; i<entries.length; i++) {
var entry = entries[i];
var tr = document.createElement("tr");
tr.id = "row-" + i;
tr.dataset.id = i;
if (showDetails) {
td(tr, '<span onclick="toggleDetails(this)">details</a>', 'details');
}
td(tr, entry.percentage +"%", 'percentage');
td(tr, entry.count, 'count');
td(tr, entry.key, 'key');
fragment.appendChild(tr);
if (showDetails) {
tr = document.createElement("tr");
drillDown(entry, tr);
fragment.appendChild(tr);
}
}
parent.appendChild(fragment);
}
function toggleDetails(node) {
var tr = node.parentNode.parentNode;
var id = 'details-'+tr.dataset.id;
var details = document.getElementById(id);
var display = details.style.display;
if (display != "none") {
display = "none";
}else {
display = "table-row"
};
details.style.display = display;
}
function initGroupKeySelect() {
var select = document.getElementById("group-key");
for (var i in properties) {
var option = document.createElement("option");
option.text = properties[i];
select.add(option);
}
}
</script>
</head>
<body>
<h1>
<span style="color: #00FF00">I</span>
<span style="color: #FF00FF">C</span>
<span style="color: #00FFFF">E</span>
</h1>
Your IC-Explorer.
<h2>Usage</h2>
Run your script with <code>--trace_ic</code> and upload on this page:<br/>
<code>/path/to/d8 --trace_ic your_script.js > trace.txt</code>
<h2>Data</h2>
<form name="fileForm">
<p>
<input id="uploadInput" type="file" name="files" onchange="updateSize();" >
trace entries: <span id="count">0</span>
</p>
</form>
<h2>Result</h2>
<p>
Group-Key:
<select id="group-key" onchange="updateTable()"></select>
</p>
<p>
<table id="table" width="100%">
<tbody id="table-body">
</tbody>
</table>
</p>
</body>
</html>
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