40527340cd
- Show map description for selected maps - More instructions for detailed investigation Change-Id: Ia07e847c20cafc52160310c7a358004330d22094 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2231356 Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Cr-Commit-Position: refs/heads/master@{#68208}
752 lines
18 KiB
JavaScript
752 lines
18 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// ===========================================================================
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function define(prototype, name, fn) {
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Object.defineProperty(prototype, name, {value:fn, enumerable:false});
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}
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define(Array.prototype, "max", function(fn) {
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if (this.length === 0) return undefined;
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if (fn === undefined) fn = (each) => each;
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let max = fn(this[0]);
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for (let i = 1; i < this.length; i++) {
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max = Math.max(max, fn(this[i]));
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}
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return max;
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})
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define(Array.prototype, "first", function() { return this[0] });
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define(Array.prototype, "last", function() { return this[this.length - 1] });
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// ===========================================================================
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class MapProcessor extends LogReader {
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constructor() {
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super();
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this.dispatchTable_ = {
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__proto__:null,
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'code-creation': {
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parsers: [parseString, parseInt, parseInt, parseInt, parseInt,
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parseString, parseVarArgs],
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processor: this.processCodeCreation
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},
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'code-move': {
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parsers: [parseInt, parseInt],
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'sfi-move': {
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parsers: [parseInt, parseInt],
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processor: this.processCodeMove
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},
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'code-delete': {
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parsers: [parseInt],
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processor: this.processCodeDelete
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},
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processor: this.processFunctionMove
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},
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'map-create': {
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parsers: [parseInt, parseInt, parseString],
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processor: this.processMapCreate
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},
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'map': {
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parsers: [parseString, parseInt, parseInt, parseInt, parseInt, parseInt,
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parseString, parseString, parseString
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],
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processor: this.processMap
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},
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'map-details': {
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parsers: [parseInt, parseInt, parseString],
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processor: this.processMapDetails
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}
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};
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this.profile_ = new Profile();
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this.timeline_ = new Timeline();
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this.formatPCRegexp_ = /(.*):[0-9]+:[0-9]+$/;
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}
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printError(str) {
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console.error(str);
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throw str
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}
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processString(string) {
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let end = string.length;
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let current = 0;
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let next = 0;
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let line;
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let i = 0;
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let entry;
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try {
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while (current < end) {
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next = string.indexOf("\n", current);
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if (next === -1) break;
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i++;
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line = string.substring(current, next);
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current = next + 1;
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this.processLogLine(line);
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}
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} catch(e) {
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console.error("Error occurred during parsing, trying to continue: " + e);
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}
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return this.finalize();
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}
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processLogFile(fileName) {
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this.collectEntries = true
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this.lastLogFileName_ = fileName;
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let i = 1;
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let line;
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try {
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while (line = readline()) {
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this.processLogLine(line);
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i++;
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}
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} catch(e) {
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console.error("Error occurred during parsing line " + i + ", trying to continue: " + e);
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}
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return this.finalize();
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}
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finalize() {
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// TODO(cbruni): print stats;
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this.timeline_.finalize();
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return this.timeline_;
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}
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addEntry(entry) {
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this.entries.push(entry);
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}
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/**
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* Parser for dynamic code optimization state.
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*/
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parseState(s) {
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switch (s) {
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case "":
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return Profile.CodeState.COMPILED;
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case "~":
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return Profile.CodeState.OPTIMIZABLE;
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case "*":
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return Profile.CodeState.OPTIMIZED;
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}
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throw new Error("unknown code state: " + s);
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}
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processCodeCreation(
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type, kind, timestamp, start, size, name, maybe_func) {
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if (maybe_func.length) {
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let funcAddr = parseInt(maybe_func[0]);
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let state = this.parseState(maybe_func[1]);
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this.profile_.addFuncCode(type, name, timestamp, start, size, funcAddr, state);
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} else {
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this.profile_.addCode(type, name, timestamp, start, size);
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}
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}
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processCodeMove(from, to) {
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this.profile_.moveCode(from, to);
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}
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processCodeDelete(start) {
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this.profile_.deleteCode(start);
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}
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processFunctionMove(from, to) {
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this.profile_.moveFunc(from, to);
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}
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formatPC(pc, line, column) {
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let entry = this.profile_.findEntry(pc);
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if (!entry) return "<unknown>"
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if (entry.type === "Builtin") {
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return entry.name;
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}
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let name = entry.func.getName();
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let array = this.formatPCRegexp_.exec(name);
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if (array === null) {
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entry = name;
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} else {
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entry = entry.getState() + array[1];
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}
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return entry + ":" + line + ":" + column;
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}
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processMap(type, time, from, to, pc, line, column, reason, name) {
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let time_ = parseInt(time);
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if (type === "Deprecate") return this.deprecateMap(type, time_, from);
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let from_ = this.getExistingMap(from, time_);
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let to_ = this.getExistingMap(to, time_);
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let edge = new Edge(type, name, reason, time, from_, to_);
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to_.filePosition = this.formatPC(pc, line, column);
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edge.finishSetup();
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}
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deprecateMap(type, time, id) {
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this.getExistingMap(id, time).deprecate();
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}
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processMapCreate(time, id, string) {
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// map-create events might override existing maps if the addresses get
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// rcycled. Hence we do not check for existing maps.
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let map = this.createMap(id, time);
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map.description = string;
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}
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processMapDetails(time, id, string) {
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//TODO(cbruni): fix initial map logging.
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let map = this.getExistingMap(id, time);
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if (!map.description) map.description = string;
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}
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createMap(id, time) {
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let map = new V8Map(id, time);
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this.timeline_.push(map);
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return map;
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}
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getExistingMap(id, time) {
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if (id === 0) return undefined;
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let map = V8Map.get(id);
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if (map === undefined) {
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console.error("No map details provided: id=" + id);
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// Manually patch in a map to continue running.
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return this.createMap(id, time);
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};
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return map;
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}
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}
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// ===========================================================================
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class V8Map {
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constructor(id, time = -1) {
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if (!id) throw "Invalid ID";
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this.id = id;
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this.time = time;
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if (!(time > 0)) throw "Invalid time";
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this.description = "";
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this.edge = void 0;
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this.children = [];
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this.depth = 0;
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this._isDeprecated = false;
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this.deprecationTargets = null;
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V8Map.set(id, this);
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this.leftId = 0;
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this.rightId = 0;
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this.filePosition = "";
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}
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finalizeRootMap(id) {
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let stack = [this];
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while (stack.length > 0) {
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let current = stack.pop();
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if (current.leftId !== 0) {
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console.error("Skipping potential parent loop between maps:", current)
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continue;
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}
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current.finalize(id)
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id += 1;
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current.children.forEach(edge => stack.push(edge.to))
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// TODO implement rightId
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}
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return id;
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}
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finalize(id) {
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// Initialize preorder tree traversal Ids for fast subtree inclusion checks
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if (id <= 0) throw "invalid id";
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let currentId = id;
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this.leftId = currentId
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}
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parent() {
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if (this.edge === void 0) return void 0;
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return this.edge.from;
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}
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isDeprecated() {
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return this._isDeprecated;
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}
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deprecate() {
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this._isDeprecated = true;
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}
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isRoot() {
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return this.edge === void 0 || this.edge.from === void 0;
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}
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contains(map) {
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return this.leftId < map.leftId && map.rightId < this.rightId;
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}
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addEdge(edge) {
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this.children.push(edge);
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}
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chunkIndex(chunks) {
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// Did anybody say O(n)?
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for (let i = 0; i < chunks.length; i++) {
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let chunk = chunks[i];
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if (chunk.isEmpty()) continue;
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if (chunk.last().time < this.time) continue;
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return i;
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}
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return -1;
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}
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position(chunks) {
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let index = this.chunkIndex(chunks);
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let xFrom = (index + 0.5) * kChunkWidth;
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let yFrom = kChunkHeight - chunks[index].yOffset(this);
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return [xFrom, yFrom];
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}
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transitions() {
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let transitions = Object.create(null);
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let current = this;
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while (current) {
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let edge = current.edge;
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if (edge && edge.isTransition()) {
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transitions[edge.name] = edge;
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}
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current = current.parent()
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}
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return transitions;
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}
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getType() {
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return this.edge === void 0 ? "new" : this.edge.type;
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}
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isBootstrapped() {
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return this.edge === void 0;
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}
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getParents() {
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let parents = [];
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let current = this.parent();
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while (current) {
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parents.push(current);
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current = current.parent();
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}
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return parents;
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}
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static get(id) {
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return this.cache.get(id);
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}
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static set(id, map) {
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this.cache.set(id, map);
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}
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}
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V8Map.cache = new Map();
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// ===========================================================================
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class Edge {
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constructor(type, name, reason, time, from, to) {
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this.type = type;
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this.name = name;
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this.reason = reason;
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this.time = time;
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this.from = from;
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this.to = to;
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}
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finishSetup() {
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let from = this.from
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if (from) from.addEdge(this);
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let to = this.to;
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if (to === undefined) return;
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to.edge = this;
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if (from === undefined ) return;
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if (to === from) throw "From and to must be distinct.";
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if (to.time < from.time) {
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console.error("invalid time order");
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}
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let newDepth = from.depth + 1;
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if (to.depth > 0 && to.depth != newDepth) {
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console.error("Depth has already been initialized");
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}
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to.depth = newDepth;
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}
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chunkIndex(chunks) {
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// Did anybody say O(n)?
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for (let i = 0; i < chunks.length; i++) {
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let chunk = chunks[i];
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if (chunk.isEmpty()) continue;
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if (chunk.last().time < this.time) continue;
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return i;
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}
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return -1;
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}
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parentEdge() {
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if (!this.from) return undefined;
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return this.from.edge;
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}
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chainLength() {
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let length = 0;
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let prev = this;
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while (prev) {
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prev = this.parent;
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length++;
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}
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return length;
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}
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isTransition() {
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return this.type === "Transition"
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}
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isFastToSlow() {
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return this.type === "Normalize"
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}
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isSlowToFast() {
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return this.type === "SlowToFast"
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}
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isInitial() {
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return this.type === "InitialMap"
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}
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isBootstrapped() {
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return this.type === "new"
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}
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isReplaceDescriptors() {
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return this.type === "ReplaceDescriptors"
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}
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isCopyAsPrototype() {
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return this.reason === "CopyAsPrototype"
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}
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isOptimizeAsPrototype() {
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return this.reason === "OptimizeAsPrototype"
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}
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symbol() {
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if (this.isTransition()) return "+";
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if (this.isFastToSlow()) return "⊡";
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if (this.isSlowToFast()) return "⊛";
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if (this.isReplaceDescriptors()) {
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if (this.name) return "+";
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return "∥";
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}
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return "";
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}
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toString() {
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let s = this.symbol();
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if (this.isTransition()) return s + this.name;
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if (this.isFastToSlow()) return s + this.reason;
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if (this.isCopyAsPrototype()) return s + "Copy as Prototype";
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if (this.isOptimizeAsPrototype()) {
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return s + "Optimize as Prototype";
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}
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if (this.isReplaceDescriptors() && this.name) {
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return this.type + " " + this.symbol() + this.name;
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}
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return this.type + " " + (this.reason ? this.reason : "") + " " +
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(this.name ? this.name : "")
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}
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}
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// ===========================================================================
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class Marker {
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constructor(time, name) {
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this.time = parseInt(time);
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this.name = name;
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}
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}
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// ===========================================================================
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class Timeline {
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constructor() {
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this.values = [];
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this.transitions = new Map();
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this.markers = [];
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this.startTime = 0;
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this.endTime = 0;
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}
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push(map) {
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let time = map.time;
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if (!this.isEmpty() && this.last().time > time) {
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// Invalid insertion order, might happen without --single-process,
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// finding insertion point.
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let insertionPoint = this.find(time);
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this.values.splice(insertionPoint, map);
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} else {
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this.values.push(map);
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}
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if (time > 0) {
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this.endTime = Math.max(this.endTime, time);
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if (this.startTime === 0) {
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this.startTime = time;
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} else {
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this.startTime = Math.min(this.startTime, time);
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}
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}
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}
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addMarker(time, message) {
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this.markers.push(new Marker(time, message));
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}
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finalize() {
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let id = 0;
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this.forEach(map => {
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if (map.isRoot()) id = map.finalizeRootMap(id + 1);
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if (map.edge && map.edge.name) {
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let edge = map.edge;
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let list = this.transitions.get(edge.name);
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if (list === undefined) {
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this.transitions.set(edge.name, [edge]);
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} else {
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list.push(edge);
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}
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}
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});
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this.markers.sort((a, b) => b.time - a.time);
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}
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at(index) {
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return this.values[index]
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}
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isEmpty() {
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return this.size() === 0
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}
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size() {
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return this.values.length
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}
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first() {
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return this.values.first()
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}
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last() {
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return this.values.last()
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}
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duration() {
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return this.last().time - this.first().time
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}
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forEachChunkSize(count, fn) {
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const increment = this.duration() / count;
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let currentTime = this.first().time + increment;
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let index = 0;
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for (let i = 0; i < count; i++) {
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let nextIndex = this.find(currentTime, index);
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let nextTime = currentTime + increment;
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fn(index, nextIndex, currentTime, nextTime);
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index = nextIndex
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currentTime = nextTime;
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}
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}
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chunkSizes(count) {
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let chunks = [];
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this.forEachChunkSize(count, (start, end) => chunks.push(end - start));
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return chunks;
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}
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chunks(count) {
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let chunks = [];
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let emptyMarkers = [];
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this.forEachChunkSize(count, (start, end, startTime, endTime) => {
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let items = this.values.slice(start, end);
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let markers = this.markersAt(startTime, endTime);
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chunks.push(new Chunk(chunks.length, startTime, endTime, items, markers));
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});
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return chunks;
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}
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range(start, end) {
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const first = this.find(start);
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if (first < 0) return [];
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const last = this.find(end, first);
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return this.values.slice(first, last);
|
|
}
|
|
|
|
find(time, offset = 0) {
|
|
return this.basicFind(this.values, each => each.time - time, offset);
|
|
}
|
|
|
|
markersAt(startTime, endTime) {
|
|
let start = this.basicFind(this.markers, each => each.time - startTime);
|
|
let end = this.basicFind(this.markers, each => each.time - endTime, start);
|
|
return this.markers.slice(start, end);
|
|
}
|
|
|
|
basicFind(array, cmp, offset = 0) {
|
|
let min = offset;
|
|
let max = array.length;
|
|
while (min < max) {
|
|
let mid = min + Math.floor((max - min) / 2);
|
|
let result = cmp(array[mid]);
|
|
if (result > 0) {
|
|
max = mid - 1;
|
|
} else {
|
|
min = mid + 1;
|
|
}
|
|
}
|
|
return min;
|
|
}
|
|
|
|
count(filter) {
|
|
return this.values.reduce((sum, each) => {
|
|
return sum + (filter(each) === true ? 1 : 0);
|
|
}, 0);
|
|
}
|
|
|
|
filter(predicate) {
|
|
return this.values.filter(predicate);
|
|
}
|
|
|
|
filterUniqueTransitions(filter) {
|
|
// Returns a list of Maps whose parent is not in the list.
|
|
return this.values.filter(map => {
|
|
if (filter(map) === false) return false;
|
|
let parent = map.parent();
|
|
if (parent === undefined) return true;
|
|
return filter(parent) === false;
|
|
});
|
|
}
|
|
|
|
depthHistogram() {
|
|
return this.values.histogram(each => each.depth);
|
|
}
|
|
|
|
fanOutHistogram() {
|
|
return this.values.histogram(each => each.children.length);
|
|
}
|
|
|
|
forEach(fn) {
|
|
return this.values.forEach(fn)
|
|
}
|
|
}
|
|
|
|
|
|
// ===========================================================================
|
|
class Chunk {
|
|
constructor(index, start, end, items, markers) {
|
|
this.index = index;
|
|
this.start = start;
|
|
this.end = end;
|
|
this.items = items;
|
|
this.markers = markers
|
|
this.height = 0;
|
|
}
|
|
|
|
isEmpty() {
|
|
return this.items.length === 0;
|
|
}
|
|
|
|
last() {
|
|
return this.at(this.size() - 1);
|
|
}
|
|
|
|
first() {
|
|
return this.at(0);
|
|
}
|
|
|
|
at(index) {
|
|
return this.items[index];
|
|
}
|
|
|
|
size() {
|
|
return this.items.length;
|
|
}
|
|
|
|
yOffset(map) {
|
|
// items[0] == oldest map, displayed at the top of the chunk
|
|
// items[n-1] == youngest map, displayed at the bottom of the chunk
|
|
return (1 - (this.indexOf(map) + 0.5) / this.size()) * this.height;
|
|
}
|
|
|
|
indexOf(map) {
|
|
return this.items.indexOf(map);
|
|
}
|
|
|
|
has(map) {
|
|
if (this.isEmpty()) return false;
|
|
return this.first().time <= map.time && map.time <= this.last().time;
|
|
}
|
|
|
|
next(chunks) {
|
|
return this.findChunk(chunks, 1);
|
|
}
|
|
|
|
prev(chunks) {
|
|
return this.findChunk(chunks, -1);
|
|
}
|
|
|
|
findChunk(chunks, delta) {
|
|
let i = this.index + delta;
|
|
let chunk = chunks[i];
|
|
while (chunk && chunk.size() === 0) {
|
|
i += delta;
|
|
chunk = chunks[i]
|
|
}
|
|
return chunk;
|
|
}
|
|
|
|
getTransitionBreakdown() {
|
|
return BreakDown(this.items, map => map.getType())
|
|
}
|
|
|
|
getUniqueTransitions() {
|
|
// Filter out all the maps that have parents within the same chunk.
|
|
return this.items.filter(map => !map.parent() || !this.has(map.parent()));
|
|
}
|
|
}
|
|
|
|
|
|
// ===========================================================================
|
|
function BreakDown(list, map_fn) {
|
|
if (map_fn === void 0) {
|
|
map_fn = each => each;
|
|
}
|
|
let breakdown = {__proto__:null};
|
|
list.forEach(each=> {
|
|
let type = map_fn(each);
|
|
let v = breakdown[type];
|
|
breakdown[type] = (v | 0) + 1
|
|
});
|
|
return Object.entries(breakdown)
|
|
.sort((a,b) => a[1] - b[1]);
|
|
}
|
|
|
|
|
|
// ===========================================================================
|
|
class ArgumentsProcessor extends BaseArgumentsProcessor {
|
|
getArgsDispatch() {
|
|
return {
|
|
'--range': ['range', 'auto,auto',
|
|
'Specify the range limit as [start],[end]'
|
|
],
|
|
'--source-map': ['sourceMap', null,
|
|
'Specify the source map that should be used for output'
|
|
]
|
|
};
|
|
}
|
|
|
|
getDefaultResults() {
|
|
return {
|
|
logFileName: 'v8.log',
|
|
range: 'auto,auto',
|
|
};
|
|
}
|
|
}
|