current/deps/v8/tools/parse-processor.js
// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
"use strict";
/**
* A thin wrapper around shell's 'read' function showing a file name on error.
*/
function readFile(fileName) {
try {
return read(fileName);
} catch (e) {
console.log(fileName + ': ' + (e.message || e));
throw e;
}
}
// ===========================================================================
// This is the only true formatting, why? For an international audience the
// confusion between the decimal and thousands separator is big (alternating
// between comma "," vs dot "."). The Swiss formatting uses "'" as a thousands
// separator, dropping most of that confusion.
const numberFormat = new Intl.NumberFormat('de-CH', {
maximumFractionDigits: 2,
minimumFractionDigits: 2,
});
function formatNumber(value) {
return numberFormat.format(value);
}
function BYTES(bytes, total) {
let units = ['B ', 'kB', 'mB', 'gB'];
let unitIndex = 0;
let value = bytes;
while (value > 1000 && unitIndex < units.length) {
value /= 1000;
unitIndex++;
}
let result = formatNumber(value).padStart(10) + ' ' + units[unitIndex];
if (total !== void 0 && total != 0) {
result += PERCENT(bytes, total).padStart(5);
}
return result;
}
function PERCENT(value, total) {
return Math.round(value / total * 100) + "%";
}
// ===========================================================================
const kNoTimeMetrics = {
__proto__: null,
executionDuration: 0,
firstEventTimestamp: 0,
firstParseEventTimestamp: 0,
lastParseEventTimestamp: 0,
lastEventTimestamp: 0
};
class CompilationUnit {
constructor() {
this.isEval = false;
// Lazily computed properties.
this.firstEventTimestamp = -1;
this.firstParseEventTimestamp = -1;
this.firstCompileEventTimestamp = -1;
this.lastParseEventTimestamp = -1;
this.lastEventTimestamp = -1;
this.deserializationTimestamp = -1;
this.preparseTimestamp = -1;
this.parseTimestamp = -1;
this.parse2Timestamp = -1;
this.resolutionTimestamp = -1;
this.compileTimestamp = -1;
this.lazyCompileTimestamp = -1;
this.executionTimestamp = -1;
this.optimizationTimestamp = -1;
this.deserializationDuration = -0.0;
this.preparseDuration = -0.0;
this.parseDuration = -0.0;
this.parse2Duration = -0.0;
this.resolutionDuration = -0.0;
this.scopeResolutionDuration = -0.0;
this.lazyCompileDuration = -0.0;
this.compileDuration = -0.0;
this.optimizeDuration = -0.0;
this.ownBytes = -1;
this.compilationCacheHits = [];
}
finalize() {
this.firstEventTimestamp = this.timestampMin(
this.deserializationTimestamp, this.parseTimestamp,
this.preparseTimestamp, this.resolutionTimestamp,
this.executionTimestamp);
this.firstParseEventTimestamp = this.timestampMin(
this.deserializationTimestamp, this.parseTimestamp,
this.preparseTimestamp, this.resolutionTimestamp);
this.firstCompileEventTimestamp = this.rawTimestampMin(
this.deserializationTimestamp, this.compileTimestamp,
this.lazyCompileTimestamp);
// Any excuted script needs to be compiled.
if (this.hasBeenExecuted() &&
(this.firstCompileEventTimestamp <= 0 ||
this.executionTimestamp < this.firstCompileTimestamp)) {
console.error('Compile < execution timestamp', this);
}
if (this.ownBytes < 0) console.error(this, 'Own bytes must be positive');
}
hasBeenExecuted() {
return this.executionTimestamp > 0;
}
addCompilationCacheHit(timestamp) {
this.compilationCacheHits.push(timestamp);
}
// Returns the smallest timestamp from the given list, ignoring
// uninitialized (-1) values.
rawTimestampMin(...timestamps) {
timestamps = timestamps.length == 1 ? timestamps[0] : timestamps;
let result = timestamps.reduce((min, item) => {
return item == -1 ? min : (min == -1 ? item : Math.min(item, item));
}, -1);
return result;
}
timestampMin(...timestamps) {
let result = this.rawTimestampMin(...timestamps);
if (Number.isNaN(result) || result < 0) {
console.error(
'Invalid timestamp min:', {result, timestamps, script: this});
return 0;
}
return result;
}
timestampMax(...timestamps) {
timestamps = timestamps.length == 1 ? timestamps[0] : timestamps;
let result = Math.max(...timestamps);
if (Number.isNaN(result) || result < 0) {
console.error(
'Invalid timestamp max:', {result, timestamps, script: this});
return 0;
}
return result;
}
}
// ===========================================================================
class Script extends CompilationUnit {
constructor(id) {
super();
if (id === void 0 || id <= 0) {
throw new Error(`Invalid id=${id} for script`);
}
this.file = '';
this.id = id;
this.isNative = false;
this.isBackgroundCompiled = false;
this.isStreamingCompiled = false;
this.funktions = [];
this.metrics = new Map();
this.maxNestingLevel = 0;
this.width = 0;
this.bytesTotal = -1;
this.finalized = false;
this.summary = '';
this.source = '';
}
setFile(name) {
this.file = name;
this.isNative = name.startsWith('native ');
}
isEmpty() {
return this.funktions.length === 0;
}
getFunktionAtStartPosition(start) {
if (!this.isEval && start === 0) {
throw 'position 0 is reserved for the script';
}
if (this.finalized) {
return this.funktions.find(funktion => funktion.start == start);
}
return this.funktions[start];
}
// Return the innermost function at the given source position.
getFunktionForPosition(position) {
if (!this.finalized) throw 'Incomplete script';
for (let i = this.funktions.length - 1; i >= 0; i--) {
let funktion = this.funktions[i];
if (funktion.containsPosition(position)) return funktion;
}
return undefined;
}
addMissingFunktions(list) {
if (this.finalized) throw 'script is finalized!';
list.forEach(fn => {
if (this.funktions[fn.start] === void 0) {
this.addFunktion(fn);
}
});
}
addFunktion(fn) {
if (this.finalized) throw 'script is finalized!';
if (fn.start === void 0) throw "Funktion has no start position";
if (this.funktions[fn.start] !== void 0) {
fn.print();
throw "adding same function twice to script";
}
this.funktions[fn.start] = fn;
}
finalize() {
this.finalized = true;
// Compact funktions as we no longer need access via start byte position.
this.funktions = this.funktions.filter(each => true);
let parent = null;
let maxNesting = 0;
// Iterate over the Funktions in byte position order.
this.funktions.forEach(fn => {
fn.isEval = this.isEval;
if (parent === null) {
parent = fn;
} else {
// Walk up the nested chain of Funktions to find the parent.
while (parent !== null && !fn.isNestedIn(parent)) {
parent = parent.parent;
}
fn.parent = parent;
if (parent) {
maxNesting = Math.max(maxNesting, parent.addNestedFunktion(fn));
}
parent = fn;
}
});
// Sanity checks to ensure that scripts are executed and parsed before any
// of its funktions.
let funktionFirstParseEventTimestamp = -1;
// Second iteration step to finalize the funktions once the proper
// hierarchy has been set up.
this.funktions.forEach(fn => {
fn.finalize();
funktionFirstParseEventTimestamp = this.timestampMin(
funktionFirstParseEventTimestamp, fn.firstParseEventTimestamp);
this.lastParseEventTimestamp = this.timestampMax(
this.lastParseEventTimestamp, fn.lastParseEventTimestamp);
this.lastEventTimestamp =
this.timestampMax(this.lastEventTimestamp, fn.lastEventTimestamp);
});
this.maxNestingLevel = maxNesting;
// Initialize sizes.
if (!this.ownBytes === -1) throw 'Invalid state';
if (this.funktions.length == 0) {
this.bytesTotal = this.ownBytes = 0;
return;
}
let toplevelFunktionBytes = this.funktions.reduce(
(bytes, each) => bytes + (each.isToplevel() ? each.getBytes() : 0), 0);
if (this.isDeserialized || this.isEval || this.isStreamingCompiled) {
if (this.getBytes() === -1) {
this.bytesTotal = toplevelFunktionBytes;
}
}
this.ownBytes = this.bytesTotal - toplevelFunktionBytes;
// Initialize common properties.
super.finalize();
// Sanity checks after the minimum timestamps have been computed.
if (funktionFirstParseEventTimestamp < this.firstParseEventTimestamp) {
console.error(
'invalid firstCompileEventTimestamp', this,
funktionFirstParseEventTimestamp, this.firstParseEventTimestamp);
}
}
print() {
console.log(this.toString());
}
toString() {
let str = `SCRIPT id=${this.id} file=${this.file}\n` +
`functions[${this.funktions.length}]:`;
this.funktions.forEach(fn => str += fn.toString());
return str;
}
getBytes() {
return this.bytesTotal;
}
getOwnBytes() {
return this.ownBytes;
}
// Also see Funktion.prototype.getMetricBytes
getMetricBytes(name) {
if (name == 'lazyCompileTimestamp') return this.getOwnBytes();
return this.getOwnBytes();
}
getMetricDuration(name) {
return this[name];
}
forEach(fn) {
fn(this);
this.funktions.forEach(fn);
}
// Container helper for TotalScript / Script.
getScripts() {
return [this];
}
calculateMetrics(printSummary) {
let log = (str) => this.summary += str + '\n';
log("SCRIPT: " + this.id);
let all = this.funktions;
if (all.length === 0) return;
let nofFunktions = all.length;
let ownBytesSum = list => {
return list.reduce((bytes, each) => bytes + each.getOwnBytes(), 0)
};
let info = (name, funktions) => {
let ownBytes = ownBytesSum(funktions);
let nofPercent = Math.round(funktions.length / nofFunktions * 100);
let value = (funktions.length + "").padStart(6) +
(nofPercent + "%").padStart(5) +
BYTES(ownBytes, this.bytesTotal).padStart(10);
log((" - " + name).padEnd(20) + value);
this.metrics.set(name + "-bytes", ownBytes);
this.metrics.set(name + "-count", funktions.length);
this.metrics.set(name + "-count-percent", nofPercent);
this.metrics.set(name + "-bytes-percent",
Math.round(ownBytes / this.bytesTotal * 100));
};
log(" - file: " + this.file);
log(' - details: ' +
'isEval=' + this.isEval + ' deserialized=' + this.isDeserialized +
' streamed=' + this.isStreamingCompiled);
info("scripts", this.getScripts());
info("functions", all);
info("toplevel fn", all.filter(each => each.isToplevel()));
info('preparsed', all.filter(each => each.preparseDuration > 0));
info('fully parsed', all.filter(each => each.parseDuration > 0));
// info("fn parsed", all.filter(each => each.parse2Duration > 0));
// info("resolved", all.filter(each => each.resolutionDuration > 0));
info("executed", all.filter(each => each.executionTimestamp > 0));
info('forEval', all.filter(each => each.isEval));
info("lazy compiled", all.filter(each => each.lazyCompileTimestamp > 0));
info("eager compiled", all.filter(each => each.compileTimestamp > 0));
let parsingCost =
new ExecutionCost('parse', all, each => each.parseDuration);
parsingCost.setMetrics(this.metrics);
log(parsingCost.toString());
let preParsingCost =
new ExecutionCost('preparse', all, each => each.preparseDuration);
preParsingCost.setMetrics(this.metrics);
log(preParsingCost.toString());
let resolutionCost =
new ExecutionCost('resolution', all, each => each.resolutionDuration);
resolutionCost.setMetrics(this.metrics);
log(resolutionCost.toString());
let nesting = new NestingDistribution(all);
nesting.setMetrics(this.metrics);
log(nesting.toString());
if (printSummary) console.log(this.summary);
}
getAccumulatedTimeMetrics(
metrics, start, end, delta, cumulative = true, useDuration = false) {
// Returns an array of the following format:
// [ [start, acc(metric0, start, start), acc(metric1, ...), ...],
// [start+delta, acc(metric0, start, start+delta), ...],
// [start+delta*2, acc(metric0, start, start+delta*2), ...],
// ...
// ]
if (end <= start) throw 'Invalid ranges [' + start + ',' + end + ']';
const timespan = end - start;
const kSteps = Math.ceil(timespan / delta);
// To reduce the time spent iterating over the funktions of this script
// we iterate once over all funktions and add the metric changes to each
// timepoint:
// [ [0, 300, ...], [1, 15, ...], [2, 100, ...], [3, 0, ...] ... ]
// In a second step we accumulate all values:
// [ [0, 300, ...], [1, 315, ...], [2, 415, ...], [3, 415, ...] ... ]
//
// To limit the number of data points required in the resulting graphs,
// only the rows for entries with actual changes are created.
const metricProperties = ["time"];
metrics.forEach(each => {
metricProperties.push(each + 'Timestamp');
if (useDuration) metricProperties.push(each + 'Duration');
});
// Create a packed {rowTemplate} which is copied later-on.
let indexToTime = (t) => (start + t * delta) / kSecondsToMillis;
let rowTemplate = [indexToTime(0)];
for (let i = 1; i < metricProperties.length; i++) rowTemplate.push(0.0);
// Create rows with 0-time entry.
let rows = new Array(rowTemplate.slice());
for (let t = 1; t <= kSteps; t++) rows.push(null);
// Create the real metric's property name on the Funktion object.
// Add the increments of each Funktion's metric to the result.
this.forEach(funktionOrScript => {
// Iterate over the Funktion's metric names, skipping position 0 which
// is the time.
const kMetricIncrement = useDuration ? 2 : 1;
for (let i = 1; i < metricProperties.length; i += kMetricIncrement) {
let timestampPropertyName = metricProperties[i];
let timestamp = funktionOrScript[timestampPropertyName];
if (timestamp === void 0) continue;
if (timestamp < start || end < timestamp) continue;
timestamp -= start;
let index = Math.floor(timestamp / delta);
let row = rows[index];
if (row === null) {
// Add a new row if it didn't exist,
row = rows[index] = rowTemplate.slice();
// .. add the time offset.
row[0] = indexToTime(index);
}
// Add the metric value.
row[i] += funktionOrScript.getMetricBytes(timestampPropertyName);
if (!useDuration) continue;
let durationPropertyName = metricProperties[i + 1];
row[i + 1] += funktionOrScript.getMetricDuration(durationPropertyName);
}
});
// Create a packed array again with only the valid entries.
// Accumulate the incremental results by adding the metric values from
// the previous time window.
let previous = rows[0];
let result = [previous];
for (let t = 1; t < rows.length; t++) {
let current = rows[t];
if (current === null) {
// Ensure a zero data-point after each non-zero point.
if (!cumulative && rows[t - 1] !== null) {
let duplicate = rowTemplate.slice();
duplicate[0] = indexToTime(t);
result.push(duplicate);
}
continue;
}
if (cumulative) {
// Skip i==0 where the corresponding time value in seconds is.
for (let i = 1; i < metricProperties.length; i++) {
current[i] += previous[i];
}
}
// Make sure we have a data-point in time right before the current one.
if (rows[t - 1] === null) {
let duplicate = (!cumulative ? rowTemplate : previous).slice();
duplicate[0] = indexToTime(t - 1);
result.push(duplicate);
}
previous = current;
result.push(current);
}
// Make sure there is an entry at the last position to make sure all graphs
// have the same width.
const lastIndex = rows.length - 1;
if (rows[lastIndex] === null) {
let duplicate = previous.slice();
duplicate[0] = indexToTime(lastIndex);
result.push(duplicate);
}
return result;
}
getFunktionsAtTime(time, delta, metric) {
// Returns a list of Funktions whose metric changed in the
// [time-delta, time+delta] range.
return this.funktions.filter(
funktion => funktion.didMetricChange(time, delta, metric));
return result;
}
}
class TotalScript extends Script {
constructor() {
super('all files', 'all files');
this.scripts = [];
}
addAllFunktions(script) {
// funktions is indexed by byte offset and as such not packed. Add every
// Funktion one by one to keep this.funktions packed.
script.funktions.forEach(fn => this.funktions.push(fn));
this.scripts.push(script);
this.bytesTotal += script.bytesTotal;
}
// Iterate over all Scripts and nested Funktions.
forEach(fn) {
this.scripts.forEach(script => script.forEach(fn));
}
getScripts() {
return this.scripts;
}
}
// ===========================================================================
class NestingDistribution {
constructor(funktions) {
// Stores the nof bytes per function nesting level.
this.accumulator = [0, 0, 0, 0, 0];
// Max nof bytes encountered at any nesting level.
this.max = 0;
// avg bytes per nesting level.
this.avg = 0;
this.totalBytes = 0;
funktions.forEach(each => each.accumulateNestingLevel(this.accumulator));
this.max = this.accumulator.reduce((max, each) => Math.max(max, each), 0);
this.totalBytes = this.accumulator.reduce((sum, each) => sum + each, 0);
for (let i = 0; i < this.accumulator.length; i++) {
this.avg += this.accumulator[i] * i;
}
this.avg /= this.totalBytes;
}
print() {
console.log(this.toString())
}
toString() {
let ticks = " ▁▂▃▄▅▆▇█";
let accString = this.accumulator.reduce((str, each) => {
let index = Math.round(each / this.max * (ticks.length - 1));
return str + ticks[index];
}, '');
let percent0 = this.accumulator[0]
let percent1 = this.accumulator[1];
let percent2plus = this.accumulator.slice(2)
.reduce((sum, each) => sum + each, 0);
return " - nesting level: " +
' avg=' + formatNumber(this.avg) +
' l0=' + PERCENT(percent0, this.totalBytes) +
' l1=' + PERCENT(percent1, this.totalBytes) +
' l2+=' + PERCENT(percent2plus, this.totalBytes) +
' distribution=[' + accString + ']';
}
setMetrics(dict) {}
}
class ExecutionCost {
constructor(prefix, funktions, time_fn) {
this.prefix = prefix;
// Time spent on executed functions.
this.executedCost = 0
// Time spent on not executed functions.
this.nonExecutedCost = 0;
this.executedCost = funktions.reduce((sum, each) => {
return sum + (each.hasBeenExecuted() ? time_fn(each) : 0)
}, 0);
this.nonExecutedCost = funktions.reduce((sum, each) => {
return sum + (each.hasBeenExecuted() ? 0 : time_fn(each))
}, 0);
}
print() {
console.log(this.toString())
}
toString() {
return (' - ' + this.prefix + '-time:').padEnd(24) +
(" executed=" + formatNumber(this.executedCost) + 'ms').padEnd(20) +
" non-executed=" + formatNumber(this.nonExecutedCost) + 'ms';
}
setMetrics(dict) {
dict.set('parseMetric', this.executionCost);
dict.set('parseMetricNegative', this.nonExecutionCost);
}
}
// ===========================================================================
class Funktion extends CompilationUnit {
constructor(name, start, end, script) {
super();
if (start < 0) throw "invalid start position: " + start;
if (script.isEval) {
if (end < start) throw 'invalid start end positions';
} else {
if (end <= 0) throw 'invalid end position: ' + end;
if (end <= start) throw 'invalid start end positions';
}
this.name = name;
this.start = start;
this.end = end;
this.script = script;
this.parent = null;
this.nested = [];
this.nestingLevel = 0;
if (script) this.script.addFunktion(this);
}
finalize() {
this.lastParseEventTimestamp = Math.max(
this.preparseTimestamp + this.preparseDuration,
this.parseTimestamp + this.parseDuration,
this.resolutionTimestamp + this.resolutionDuration);
if (!(this.lastParseEventTimestamp > 0)) this.lastParseEventTimestamp = 0;
this.lastEventTimestamp =
Math.max(this.lastParseEventTimestamp, this.executionTimestamp);
if (!(this.lastEventTimestamp > 0)) this.lastEventTimestamp = 0;
this.ownBytes = this.nested.reduce(
(bytes, each) => bytes - each.getBytes(), this.getBytes());
super.finalize();
}
getMetricBytes(name) {
if (name == 'lazyCompileTimestamp') return this.getOwnBytes();
return this.getOwnBytes();
}
getMetricDuration(name) {
if (name in kNoTimeMetrics) return 0;
return this[name];
}
isNestedIn(funktion) {
if (this.script != funktion.script) throw "Incompatible script";
return funktion.start < this.start && this.end <= funktion.end;
}
isToplevel() {
return this.parent === null;
}
containsPosition(position) {
return this.start <= position && position <= this.end;
}
accumulateNestingLevel(accumulator) {
let value = accumulator[this.nestingLevel] || 0;
accumulator[this.nestingLevel] = value + this.getOwnBytes();
}
addNestedFunktion(child) {
if (this.script != child.script) throw "Incompatible script";
if (child == null) throw "Nesting non child";
this.nested.push(child);
if (this.nested.length > 1) {
// Make sure the nested children don't overlap and have been inserted in
// byte start position order.
let last = this.nested[this.nested.length - 2];
if (last.end > child.start || last.start > child.start ||
last.end > child.end || last.start > child.end) {
throw "Wrongly nested child added";
}
}
child.nestingLevel = this.nestingLevel + 1;
return child.nestingLevel;
}
getBytes() {
return this.end - this.start;
}
getOwnBytes() {
return this.ownBytes;
}
didMetricChange(time, delta, name) {
let value = this[name + 'Timestamp'];
return (time - delta) <= value && value <= (time + delta);
}
print() {
console.log(this.toString());
}
toString(details = true) {
let result = 'function' + (this.name ? ' ' + this.name : '') +
`() range=${this.start}-${this.end}`;
if (details) result += ` script=${this.script ? this.script.id : 'X'}`;
return result;
}
}
// ===========================================================================
const kTimestampFactor = 1000;
const kSecondsToMillis = 1000;
function toTimestamp(microseconds) {
return microseconds / kTimestampFactor
}
function startOf(timestamp, time) {
let result = toTimestamp(timestamp) - time;
if (result < 0) throw "start timestamp cannnot be negative";
return result;
}
class ParseProcessor extends LogReader {
constructor() {
super();
this.dispatchTable_ = {
// Avoid accidental leaking of __proto__ properties and force this object
// to be in dictionary-mode.
__proto__: null,
// "function",{event type},
// {script id},{start position},{end position},{time},{timestamp},
// {function name}
'function': {
parsers: [
parseString, parseInt, parseInt, parseInt, parseFloat, parseInt,
parseString
],
processor: this.processFunctionEvent
},
// "compilation-cache","hit"|"put",{type},{scriptid},{start position},
// {end position},{timestamp}
'compilation-cache': {
parsers:
[parseString, parseString, parseInt, parseInt, parseInt, parseInt],
processor: this.processCompilationCacheEvent
},
'script': {
parsers: [parseString, parseInt, parseInt],
processor: this.processScriptEvent
},
// "script-details", {script_id}, {file}, {line}, {column}, {size}
'script-details': {
parsers: [parseInt, parseString, parseInt, parseInt, parseInt],
processor: this.processScriptDetails
},
'script-source': {
parsers: [parseInt, parseString, parseString],
processor: this.processScriptSource
},
};
this.functionEventDispatchTable_ = {
// Avoid accidental leaking of __proto__ properties and force this object
// to be in dictionary-mode.
__proto__: null,
'full-parse': this.processFull.bind(this),
'parse-function': this.processParseFunction.bind(this),
// TODO(cbruni): make sure arrow functions emit a normal parse-function
// event.
'parse': this.processParseFunction.bind(this),
'parse-script': this.processParseScript.bind(this),
'parse-eval': this.processParseEval.bind(this),
'preparse-no-resolution': this.processPreparseNoResolution.bind(this),
'preparse-resolution': this.processPreparseResolution.bind(this),
'first-execution': this.processFirstExecution.bind(this),
'compile-lazy': this.processCompileLazy.bind(this),
'compile': this.processCompile.bind(this),
'compile-eval': this.processCompileEval.bind(this),
'optimize-lazy': this.processOptimizeLazy.bind(this),
'deserialize': this.processDeserialize.bind(this),
};
this.idToScript = new Map();
this.fileToScript = new Map();
this.nameToFunction = new Map();
this.scripts = [];
this.totalScript = new TotalScript();
this.firstEventTimestamp = -1;
this.lastParseEventTimestamp = -1;
this.lastEventTimestamp = -1;
}
print() {
console.log("scripts:");
this.idToScript.forEach(script => script.print());
}
processString(string) {
let end = string.length;
let current = 0;
let next = 0;
let line;
let i = 0;
let entry;
while (current < end) {
next = string.indexOf("\n", current);
if (next === -1) break;
i++;
line = string.substring(current, next);
current = next + 1;
this.processLogLine(line);
}
this.postProcess();
}
processLogFile(fileName) {
this.collectEntries = true
this.lastLogFileName_ = fileName;
var line;
while (line = readline()) {
this.processLogLine(line);
}
this.postProcess();
}
postProcess() {
this.scripts = Array.from(this.idToScript.values())
.filter(each => !each.isNative);
this.scripts.forEach(script => {
script.finalize();
script.calculateMetrics(false)
});
this.scripts.forEach(script => this.totalScript.addAllFunktions(script));
this.totalScript.calculateMetrics(true);
this.firstEventTimestamp = this.totalScript.timestampMin(
this.scripts.map(each => each.firstEventTimestamp));
this.lastParseEventTimestamp = this.totalScript.timestampMax(
this.scripts.map(each => each.lastParseEventTimestamp));
this.lastEventTimestamp = this.totalScript.timestampMax(
this.scripts.map(each => each.lastEventTimestamp));
const series = {
firstParseEvent: 'Any Parse Event',
parse: 'Parsing',
preparse: 'Preparsing',
resolution: 'Preparsing with Var. Resolution',
lazyCompile: 'Lazy Compilation',
compile: 'Eager Compilation',
execution: 'First Execution',
};
let metrics = Object.keys(series);
this.totalScript.getAccumulatedTimeMetrics(
metrics, 0, this.lastEventTimestamp, 10);
}
processFunctionEvent(
eventName, scriptId, startPosition, endPosition, duration, timestamp,
functionName) {
let handlerFn = this.functionEventDispatchTable_[eventName];
if (handlerFn === undefined) {
console.error('Couldn\'t find handler for function event:' + eventName);
}
handlerFn(
scriptId, startPosition, endPosition, duration, timestamp,
functionName);
}
addEntry(entry) {
this.entries.push(entry);
}
lookupScript(id) {
return this.idToScript.get(id);
}
getOrCreateFunction(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
if (scriptId == -1) {
return this.lookupFunktionByRange(startPosition, endPosition);
}
let script = this.lookupScript(scriptId);
let funktion = script.getFunktionAtStartPosition(startPosition);
if (funktion === void 0) {
funktion = new Funktion(functionName, startPosition, endPosition, script);
}
return funktion;
}
// Iterates over all functions and tries to find matching ones.
lookupFunktionsByRange(start, end) {
let results = [];
this.idToScript.forEach(script => {
script.forEach(funktion => {
if (funktion.startPostion == start && funktion.endPosition == end) {
results.push(funktion);
}
});
});
return results;
}
lookupFunktionByRange(start, end) {
let results = this.lookupFunktionsByRange(start, end);
if (results.length != 1) throw "Could not find unique function by range";
return results[0];
}
processScriptEvent(eventName, scriptId, timestamp) {
let script = this.idToScript.get(scriptId);
switch (eventName) {
case 'create':
case 'reserve-id':
case 'deserialize': {
if (script !== undefined) return;
script = new Script(scriptId);
this.idToScript.set(scriptId, script);
if (eventName == 'deserialize') {
script.deserializationTimestamp = toTimestamp(timestamp);
}
return;
}
case 'background-compile':
if (script.isBackgroundCompiled) {
throw 'Cannot background-compile twice';
}
script.isBackgroundCompiled = true;
// TODO(cbruni): remove once backwards compatibility is no longer needed.
script.isStreamingCompiled = true;
// TODO(cbruni): fix parse events for background compilation scripts
script.preparseTimestamp = toTimestamp(timestamp);
return;
case 'streaming-compile':
if (script.isStreamingCompiled) throw 'Cannot stream-compile twice';
// TODO(cbruni): remove once backwards compatibility is no longer needed.
script.isBackgroundCompiled = true;
script.isStreamingCompiled = true;
// TODO(cbruni): fix parse events for background compilation scripts
script.preparseTimestamp = toTimestamp(timestamp);
return;
default:
console.error('Unhandled script event: ' + eventName);
}
}
processScriptDetails(scriptId, file, startLine, startColumn, size) {
let script = this.lookupScript(scriptId);
script.setFile(file);
}
processScriptSource(scriptId, url, source) {
let script = this.lookupScript(scriptId);
script.source = source;
}
processParseEval(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
if (startPosition != 0 && startPosition != -1) {
console.error('Invalid start position for parse-eval', arguments);
}
let script = this.processParseScript(...arguments);
script.isEval = true;
}
processFull(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
if (startPosition == 0) {
// This should only happen for eval.
let script = this.lookupScript(scriptId);
script.isEval = true;
return;
}
let funktion = this.getOrCreateFunction(...arguments);
// TODO(cbruni): this should never happen, emit differen event from the
// parser.
if (funktion.parseTimestamp > 0) return;
funktion.parseTimestamp = startOf(timestamp, duration);
funktion.parseDuration = duration;
}
processParseFunction(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let funktion = this.getOrCreateFunction(...arguments);
funktion.parseTimestamp = startOf(timestamp, duration);
funktion.parseDuration = duration;
}
processParseScript(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
// TODO timestamp and duration
let script = this.lookupScript(scriptId);
let ts = startOf(timestamp, duration);
script.parseTimestamp = ts;
script.parseDuration = duration;
return script;
}
processPreparseResolution(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let funktion = this.getOrCreateFunction(...arguments);
// TODO(cbruni): this should never happen, emit different event from the
// parser.
if (funktion.resolutionTimestamp > 0) return;
funktion.resolutionTimestamp = startOf(timestamp, duration);
funktion.resolutionDuration = duration;
}
processPreparseNoResolution(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let funktion = this.getOrCreateFunction(...arguments);
funktion.preparseTimestamp = startOf(timestamp, duration);
funktion.preparseDuration = duration;
}
processFirstExecution(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let script = this.lookupScript(scriptId);
if (startPosition === 0) {
// undefined = eval fn execution
if (script) {
script.executionTimestamp = toTimestamp(timestamp);
}
} else {
let funktion = script.getFunktionAtStartPosition(startPosition);
if (funktion) {
funktion.executionTimestamp = toTimestamp(timestamp);
} else {
// TODO(cbruni): handle funktions from compilation-cache hits.
}
}
}
processCompileLazy(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let funktion = this.getOrCreateFunction(...arguments);
funktion.lazyCompileTimestamp = startOf(timestamp, duration);
funktion.lazyCompileDuration = duration;
}
processCompile(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let script = this.lookupScript(scriptId);
if (startPosition === 0) {
script.compileTimestamp = startOf(timestamp, duration);
script.compileDuration = duration;
script.bytesTotal = endPosition;
return script;
} else {
let funktion = script.getFunktionAtStartPosition(startPosition);
if (funktion === undefined) {
// This should not happen since any funktion has to be parsed first.
console.error('processCompile funktion not found', ...arguments);
return;
}
funktion.compileTimestamp = startOf(timestamp, duration);
funktion.compileDuration = duration;
return funktion;
}
}
processCompileEval(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let compilationUnit = this.processCompile(...arguments);
compilationUnit.isEval = true;
}
processOptimizeLazy(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let compilationUnit = this.lookupScript(scriptId);
if (startPosition > 0) {
compilationUnit =
compilationUnit.getFunktionAtStartPosition(startPosition);
if (compilationUnit === undefined) {
// This should not happen since any funktion has to be parsed first.
console.error('processOptimizeLazy funktion not found', ...arguments);
return;
}
}
compilationUnit.optimizationTimestamp = startOf(timestamp, duration);
compilationUnit.optimizationDuration = duration;
}
processDeserialize(
scriptId, startPosition, endPosition, duration, timestamp, functionName) {
let compilationUnit = this.lookupScript(scriptId);
if (startPosition === 0) {
compilationUnit.bytesTotal = endPosition;
} else {
compilationUnit = this.getOrCreateFunction(...arguments);
}
compilationUnit.deserializationTimestamp = startOf(timestamp, duration);
compilationUnit.deserializationDuration = duration;
}
processCompilationCacheEvent(
eventType, cacheType, scriptId, startPosition, endPosition, timestamp) {
if (eventType !== 'hit') return;
let compilationUnit = this.lookupScript(scriptId);
if (startPosition > 0) {
compilationUnit =
compilationUnit.getFunktionAtStartPosition(startPosition);
}
compilationUnit.addCompilationCacheHit(toTimestamp(timestamp));
}
}
class ArgumentsProcessor extends BaseArgumentsProcessor {
getArgsDispatch() {
return {};
}
getDefaultResults() {
return {
logFileName: 'v8.log',
range: 'auto,auto',
};
}
}