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logProcessor.ts
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logProcessor.ts
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
//
// THIRD PARTY LICENSE NOTICE:
//
// Portions of this code are sourced from V8:
//
// Copyright 2012 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.v8 file.
//
// Portions of this code are sourced from deoptigate:
//
// Copyright 2017 Thorsten Lorenz. All rights reserved.
// Use of this source code is goverened by the license that can be found
// in the LICENSE.deoptigate file.
import { CancelError } from "@esfx/cancelable";
import { empty, flatMap, identity, map } from "@esfx/iter-fn";
import { from } from "@esfx/iter-query";
import { Address, formatAddress, isAddress, parseAddress, tryParseAddress } from "#core/address.js";
import { assert } from "#core/assert.js";
import { LocationMap } from "#core/collections/locationMap.js";
import { StringMap } from "#core/collections/stringMap.js";
import { StringSet } from "#core/collections/stringSet.js";
import { SourceLocation } from "#core/sourceMap.js";
import { Sources } from "#core/sources.js";
import { TimeDelta, TimeTicks } from "#core/time.js";
import { resolveUri } from "#core/uri.js";
import { V8Version } from "#core/v8Version.js";
import { DeoptEntry, DeoptEntryUpdate } from "#deoptigate/deoptEntry.js";
import { FunctionEntry, FunctionEntryUpdate } from "#deoptigate/functionEntry.js";
import { IcEntry, IcEntryUpdate } from "#deoptigate/icEntry.js";
import { kNullAddress } from "#v8/constants.js";
import { CodeKind, parseCodeKind } from "#v8/enums/codeKind.js";
import { DeoptimizeKind, parseDeoptimizeKind } from "#v8/enums/deoptimizeKind.js";
import { FunctionState, parseFunctionState } from "#v8/enums/functionState.js";
import { IcState, parseIcState } from "#v8/enums/icState.js";
import { IcType } from "#v8/enums/icType.js";
import { MapEvent, parseMapEvent } from "#v8/enums/mapEvent.js";
import { parseVmState, VmState } from "#v8/enums/vmState.js";
import { TickSample } from "#v8/tickSample.js";
import { CodeEntry, DynamicCodeEntry, SharedFunctionCodeEntry } from "#v8/tools/codeentry.js";
import { CodeMap } from "#v8/tools/codemap.js";
import { ConsArray } from "#v8/tools/consarray.js";
import { CppEntriesProvider, getCppEntriesProvider } from "#v8/tools/cppEntriesProvider.js";
import { cancelTokenArg, commandNameArg, parseInt32, Parser, Parsers, parseString, parseVarArgs } from "#v8/tools/logreader.js";
import { Profile } from "#v8/tools/profile.js";
import { SplayTree } from "#v8/tools/splaytree.js";
import { CancellationError, CancellationToken, Location, Position, Progress, Uri } from "vscode";
import { DeoptPosition } from "../model/deoptPosition";
import { Entry } from "../model/entry";
import { FileEntry } from "../model/fileEntry";
import { LogFile } from "../model/logFile";
import { MapEntry, MapEntryUpdate, MapId, MapProperty, MapReference, MapReferencedByIcEntryUpdate, MapReferencedByMap, MapReferencedByMapProperty, PropertyNameEqualer, SymbolName } from "../model/mapEntry";
import { MemoryCategory } from "../model/memoryCategory";
import { MemoryEntry } from "../model/memoryEntry";
import { MemoryOverview } from "../model/memoryOverview";
import { log, measureAsync, measureSync, output, warn } from "../outputChannel";
import { getCanonicalUri } from "../services/canonicalPaths";
import { LocationComparer } from "../vscode/location";
import { messageOnlyProgress } from "../vscode/progress";
import { isPathOrUriString, pathOrUriStringToUri } from "../vscode/uri";
import { VersionedLogReader } from "./v8/versionedLogReader";
const constructorRegExp = /\n - constructor: (0x[a-fA-F0-9]+) <JSFunction ([a-zA-Z$_][a-zA-Z$_0-9]*)(?: \(sfi = ([a-fA-F0-9]+)\))?/;
const typeRegExp = /\n - type: (\w+)\r?\n/;
const elementsKindRegExp = /\n - elements kind: (\w+)\r?\n/;
const instanceSizeRegExp = /\n - instance size: (\d+)\r?\n/;
const inobjectPropertiesRegExp = /\n - inobject properties: (\d+)\r?\n/;
const unusedPropertyFieldsRegExp = /\n - unused property fields: (\d+)\r?\n/;
// const mapDetailsMapLineRegExp = /^Map=(?<value>.*)$/;
// const mapDetailsFieldKeyValueRegExp = /^ - (?<key>type|instance size|inobject properties|elements kind|unused property fields|enum length|native context|prototype info|back pointer|prototype_validity cell|instance descriptors(?: \(own\))?|layout descriptor|prototype|constructor|dependent code|construction counter): (?<value>.*)$/;
// const mapDetailsFieldKeyRegExp = /^ - (?<key>deprecated_map|stable_map|migration_target|dictionary_map|named_interceptor|indexed_interceptor|may_have_interesting_symbols|undetectable|callable|constructor|has_prototype_slot(?: \(non-instance prototype\))?|access_check_needed|non-extensible|prototype_map)$/;
// const mapDetailsInstanceDescriptorsFieldRegExp = /^ - (?<key>instance descriptors) (?<own>\(own\) )?#(?<count>): (?<value>.*)$/;
const mapDetailsPropertyLikeRegExp = /^ \[\d+\]:/;
const mapDetailsPropertyRegExp = /^ \[\d+\]: (?:0x)?[a-fA-F0-9]+:? <(?<type>String\[#?\d+\]|Symbol): (?<key>[^>]*)> \((?:const )?(?:data|accessor)(?: field(?: \d+)?(?::(?<mnemonic>\w+))?| descriptor)(?:, p: \d+)?(?:, attrs: \[(?<attrs>[W_][E_][C_])\])?\) @ (?:Any|None|Class\((?<classMapAddress>[a-fA-F0-9]+)\))?/;
const mapDetailsPropertyRegExp2 = /^ \[\d+\]: (?:0x)?[a-fA-F0-9]+:? \[(?<type>[^\]]+)\] in (?<space>\w+): u?#(?<key>(?:(?! \((?:const )?(?:data|accessor)).)*) \((?:const )?(?:data|accessor)(?: field(?: \d+)?(?::(?<mnemonic>\w+))?| descriptor)(?:, p: \d+)?(?:, attrs: \[(?<attrs>[W_][E_][C_])\])?\) @ (?:Any|None|Class\((?<classMapAddress>[a-fA-F0-9]+)\))?/;
const enum CodeType {
Cpp = 0,
SharedLib = 1,
}
export interface LogProcessorOptions {
cppEntriesProvider?: CppEntriesProvider;
excludeIc?: boolean;
excludeBytecodes?: boolean;
excludeBuiltins?: boolean;
excludeStubs?: boolean;
excludeNatives?: boolean;
timedRange?: boolean;
pairwiseTimedRange?: boolean;
globalStorageUri?: Uri;
}
export class LogProcessor {
private _cppEntriesProvider: CppEntriesProvider;
private _reader: VersionedLogReader;
private _processed = false;
private _version = V8Version.MIN;
private _codeMap = new CodeMap();
private _sources = new Sources();
private _profile: Profile;
private _files = new StringMap<Uri, FileEntry>(uriToString);
private _entries = new LocationMap<{ function?: FunctionEntry, ic?: IcEntry, deopt?: DeoptEntry }>();
private _functions = new LocationMap<FunctionEntry>();
private _ics = new LocationMap<IcEntry>();
private _deopts = new LocationMap<DeoptEntry>();
private _maps = new SplayTree<Address, MapEntry[]>();
private _heapCapacity = 0;
private _heapAvailable = 0;
private _memory = new SplayTree<Address, MemoryEntry>();
private _memorySize = 0;
private _maxMemorySize = 0;
private _memorySizes = new Map<string, MemoryCategory>();
private _entrySizes = new Map<string, MemoryCategory>();;
private _codeTypes = new Map<string, CodeType>();
private _lastTimestamp = TimeTicks.Zero;
private _mapReferences = new Map<MapEntry, Set<IcEntry>>();
private _seenFiles = new StringSet(uriToString);
private _generatedPaths = new StringSet(uriToString);
private _sourcePaths = new StringSet(uriToString);
private _messageOnlyProgress: Progress<string> | undefined;
constructor({
globalStorageUri,
cppEntriesProvider = getCppEntriesProvider({ globalStorageUri }),
excludeIc = false,
excludeBytecodes = false,
excludeBuiltins = false,
excludeStubs = false,
excludeNatives = false,
timedRange = false,
pairwiseTimedRange = false,
}: LogProcessorOptions = { }) {
this._cppEntriesProvider = cppEntriesProvider;
this._profile = new Profile({
codeMap: this._codeMap,
sources: this._sources,
excludeIc,
excludeBytecodes,
excludeBuiltins,
excludeStubs,
excludeNatives,
});
this._profile.onError(message => {
output.error(message);
});
const parseTimeTicks = (text: string) => {
const timestamp = TimeTicks.sinceOrigin(TimeDelta.fromMicroseconds(text));
if (timestamp.compareTo(this._lastTimestamp) >= 0) this._lastTimestamp = timestamp;
return timestamp;
};
const parseCodeKindForVersion = (text: string): CodeKind => parseCodeKind(text, this._version);
const parseVmStateForVersion = (text: string): VmState => parseVmState(text, this._version);
// The log reader map is mostly derived from https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc
// In most cases you can find related log events by looking for uses of the MSG_BUILDER() macro in that file.
//
// Some events we don't explicitly handle from that file:
// Logger::StringEvent // `<name:string>,<:string>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1055
// Logger::UncheckedStringEvent // `<name:string>,<:string>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1059
// Logger::IntPtrTEvent // `<name:string>,<:intptr_t>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1065
// Logger::HandleEvent // `<name:string>,<:address>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1073
// Logger::ApiSecurityEvent // `api,check-security`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1080
// Logger::BasicBlockCounterEvent // `<marker:?>,<name:string>,<block_id:int>,<count:int>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1121
// Logger::BuiltinHashEvent // `<marker:?>,<name:string>,<hash:int>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1130
// Logger::ApiNamedPropertyAccess // `api,<tag:string>,<class:string>,<property:string>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1151
// Logger::ApiIndexedPropertyAccess // `api,<tag:string>,<class:string>,<index:int>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1161
// Logger::ApiObjectAccess // `api,<tag:string>,<class:string>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1170
// Logger::ApiEntryCall // `api,<name:string>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1177
// Logger::NewEvent // `new,<name:string>,<object:address>,<size:int>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1184
// Logger::DeleteEvent // `delete,<name:string>,<object:address>`; source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1192
// Logger::LogCodeDisassemble // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1307
// Logger::ResourceEvent // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1576
// Logger::SuspectReadEvent // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1590
// Logger::FunctionEvent // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1616
// Logger::CompilationCacheEvent // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1641
// Logger::ScriptEvent // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1656
// Logger::ScriptDetails // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1681
// Logger::RuntimeCallTimerEvent // event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1730
// CODE_MOVING_GC
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L37
//
// code-moving-gc
// SNAPSHOT_CODE_NAME_EVENT
// event definition: https://github.com/v8/v8/blob/6bbf2dfa5b3bde9a40527268741b739f7d7e4bd0/src/logging/code-events.h#L37
// event source: https://github.com/v8/v8/blob/6bbf2dfa5b3bde9a40527268741b739f7d7e4bd0/src/logging/log.cc#L1558
//
// snapshot-code-name,<pos:int>,<name:string>
// more...
this._reader = new VersionedLogReader({
// 8.6.133:
// https://github.com/v8/v8/commit/e8d24c66b958edda253d10e7c8e24102d1662e80#diff-3b0c2882b426a3987400fabb70700bdd936049b0bc58ca4cede2c50341faf1b2R1662
// added timestamp to IC events
">=8.6.133": {
// #region ics
// event source: https://github.com/v8/v8/blob/6bbf2dfa5b3bde9a40527268741b739f7d7e4bd0/src/logging/log.cc#L1764
// Logger::ICEvent
//
// <type:string>,<pc:Address>,<timestamp:TimeTicks>,<line:int>,<column:int>,<oldState:char>,<newState:char>,<mapAddr:Address>,<key:string>,<modifier:string>,<slowReason:string>
"LoadGlobalIC": DISPATCHER({
parsers: [commandNameArg, parseAddress, parseTimeTicks, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEvent.bind(this)
}),
"StoreGlobalIC": DISPATCHER({
parsers: [commandNameArg, parseAddress, parseTimeTicks, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEvent.bind(this),
}),
"LoadIC": DISPATCHER({
parsers: [commandNameArg, parseAddress, parseTimeTicks, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEvent.bind(this),
}),
"StoreIC": DISPATCHER({
parsers: [commandNameArg, parseAddress, parseTimeTicks, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEvent.bind(this),
}),
"KeyedLoadIC": DISPATCHER({
parsers: [commandNameArg, parseAddress, parseTimeTicks, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEvent.bind(this),
}),
"KeyedStoreIC": DISPATCHER({
parsers: [commandNameArg, parseAddress, parseTimeTicks, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEvent.bind(this),
}),
"StoreInArrayLiteralIC": DISPATCHER({
parsers: [commandNameArg, parseAddress, parseTimeTicks, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEvent.bind(this),
}),
// #endregion ics
},
"*": {
// #region functions
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1087
//
// shared-library,<name:string>,<start:Address>,<end:Address>,<aslrSlide:int>
"shared-library": DISPATCHER({
parsers: [parseString, parseAddress, parseAddress, parseInt32, cancelTokenArg],
processor: this.processSharedLibrary.bind(this),
}),
// CODE_CREATION_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L33
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1329
//
// code-creation,<type:string>,<kind:int>,<timestamp:int64>,<start:Address>,<size:int>,<name:string>,[<funcAddr:Address>,<state:char>]
"code-creation": DISPATCHER({
parsers: [parseString, parseCodeKindForVersion, parseTimeTicks, parseAddress, parseInt32, parseString, { parser: parseAddress, optional: true }, { parser: parseFunctionState, optional: true }],
processor: this.processCodeCreation.bind(this)
}),
// CODE_MOVE_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L35
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1456
//
// code-move,<start:Address>,<end:Address>
"code-move": DISPATCHER({
parsers: [parseAddress, parseAddress],
processor: this.processCodeMove.bind(this)
}),
// CODE_DELETE_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L36
//
// code-delete,<start:Address>
"code-delete": DISPATCHER({
parsers: [parseAddress],
processor: this.processCodeDelete.bind(this)
}),
// CODE_DISABLE_OPT_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L34
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1473
//
// code-disable-optimization,<name:string>,<reason:string>
"code-disable-optimization": {
parsers: [parseString, parseString],
processor: this.processCodeDisableOptimization.bind(this)
},
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1243
//
// code-source-info,<addr:Address>,<script:int>,<start:int>,<end:int>,<pos:string>,<inline-pos:string>,<fns:string>
//
// where
// <addr> is code object address
// <script> is script id
// <start> is the starting position inside the script
// <end> is the end position inside the script
// <pos> is source position table encoded in the string,
// it is a sequence of C<code-offset>O<script-offset>[I<inlining-id>]
// where
// <code-offset> is the offset within the code object
// <script-offset> is the position within the script
// <inlining-id> is the offset in the <inlining> table
// <inlining> table is a sequence of strings of the form
// F<function-id>O<script-offset>[I<inlining-id>]
// where
// <function-id> is an index into the <fns> function table
// <fns> is the function table encoded as a sequence of strings
// S<shared-function-info-address>
"code-source-info": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseInt32, parseString, parseString, parseString],
processor: this.processCodeSourceInfo.bind(this)
}),
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1699
//
// script-source,<script:int>,<url:string>,<source:string>
"script-source": DISPATCHER({
parsers: [parseInt32, parseString, parseString],
processor: this.processScriptSource.bind(this)
}),
// SHARED_FUNC_MOVE_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L38
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1567
//
// sfi-move,<from:Address>,<to:Address>
"sfi-move": DISPATCHER({
parsers: [parseAddress, parseAddress],
processor: this.processSharedFunctionMove.bind(this)
}),
// #endregion functions
// #region ics
// event source: https://github.com/v8/v8/blob/443230c20de5825da9c8e477e597353850a1708e/src/logging/log.cc#L1653
//
// <type:string>,<pc:Address>,<line:int>,<column:int>,<oldState:char>,<newState:char>,<mapAddr:Address>,<key:string>,<modifier:string>,<slowReason:string>
"LoadGlobalIC": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEventUsingLastTimestamp.bind(this, IcType.LoadGlobalIC)
}),
"StoreGlobalIC": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEventUsingLastTimestamp.bind(this, IcType.StoreGlobalIC),
}),
"LoadIC": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEventUsingLastTimestamp.bind(this, IcType.LoadIC),
}),
"StoreIC": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEventUsingLastTimestamp.bind(this, IcType.StoreIC),
}),
"KeyedLoadIC": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEventUsingLastTimestamp.bind(this, IcType.KeyedLoadIC),
}),
"KeyedStoreIC": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEventUsingLastTimestamp.bind(this, IcType.KeyedStoreIC),
}),
"StoreInArrayLiteralIC": DISPATCHER({
parsers: [parseAddress, parseInt32, parseInt32, parseIcState, parseIcState, parseAddress, parseString, parseString, parseString],
processor: this.processIcEventUsingLastTimestamp.bind(this, IcType.StoreInArrayLiteralIC),
}),
// #endregion ics
// #region deopts
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1484
//
// code-deopt,<timestamp:TimeTicks>,<size:int>,<pc:Address>,<inliningId:int>,<scriptOffset:int>,<bailoutType:DeoptimizeKind>,<sourcePositionText:string>,<deoptReason:string>
"code-deopt": DISPATCHER({
parsers: [parseTimeTicks, parseInt32, parseAddress, parseInt32, parseInt32, parseDeoptimizeKind, DeoptPosition.parse, parseString],
processor: this.processCodeDeopt.bind(this)
}),
// #endregion deopts
// #region maps
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1825
//
// map-create,<timestamp:TimeTicks>,<addr:Address>
"map-create": DISPATCHER({
parsers: [parseTimeTicks, parseAddress],
processor: this.processMapCreate.bind(this)
}),
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1833
//
// map-details,<timestamp:TimeTicks>,<addr:Address>,<details:string>
"map-details": DISPATCHER({
parsers: [parseTimeTicks, parseAddress, parseString],
processor: this.processMapDetails.bind(this)
}),
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1793
//
// map,<event:string>,<timestamp:TimeTicks>,<from:Address>,<to:Address>,<pc:Address>,<line:int>,<column:int>,<reason:string>,<name:string>
"map": DISPATCHER({
parsers: [parseMapEvent, parseTimeTicks, parseAddress, parseAddress, parseAddress, parseInt32, parseInt32, parseString, parseString],
processor: this.processMapEvent.bind(this)
}),
// #endregion maps
// #region profiles
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1049
//
// profiler,begin,<interval:int>
// profiler,end
"profiler": DISPATCHER({
parsers: [parseString, { parser: parseInt32, optional: true }],
processor: this.processProfilerEvent.bind(this)
}),
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1105
//
// timer-event-start,<name:string>,<timestamp:TimeTicks>
"timer-event-start": DISPATCHER({
parsers: [parseString, parseTimeTicks],
processor: this.processTimerEventStart.bind(this)
}),
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1105
//
// timer-event-start,<name:string>,<timestamp:TimeTicks>
"timer-event-end": DISPATCHER({
parsers: [parseString, parseTimeTicks],
processor: this.processTimerEventEnd.bind(this)
}),
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1105
"timer-event": null,
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1098
//
// current-time,<timestamp:TimeTicks>
"current-time": DISPATCHER({
parsers: [parseTimeTicks],
processor: this.processCurrentTime.bind(this)
}),
// TICK_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L40
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1741
//
// tick,<pc:Address>,<timestamp:TimeTicks>,<isExternalCallback:int>,<tosOrExternalCallback:Address>,<vmState:VmState>,<stack:string[]>
"tick": DISPATCHER({
parsers: [parseAddress, parseTimeTicks, parseInt, parseAddress, parseVmStateForVersion, parseVarArgs],
processor: this.processTickEvent.bind(this)
}),
// #endregion profiles
// #region memory
"heap-capacity": DISPATCHER({
parsers: [parseInt],
processor: this.processHeapCapacityEvent.bind(this)
}),
"heap-available": DISPATCHER({
parsers: [parseInt],
processor: this.processHeapAvailableEvent.bind(this)
}),
"new": DISPATCHER({
parsers: [parseString, parseAddress, parseInt],
processor: this.processNewEvent.bind(this)
}),
"delete": DISPATCHER({
parsers: [parseString, parseAddress],
processor: this.processDeleteEvent.bind(this)
}),
// #endregion memory
}
},
timedRange, pairwiseTimedRange);
this._reader.onDidVersionChange(version => {
this._version = version;
output.log(`Detected log for V8 ${version.toFullString()}`);
});
this._reader.onError(message => {
output.error(message);
});
}
private async processContent(content: string | AsyncIterable<string>, progress: Progress<{ increment?: number, message?: string }>, token: CancellationToken, estimatedLogSize?: number) {
this._messageOnlyProgress = messageOnlyProgress(progress);
if (typeof content === "string") {
const result = this._reader.processLogChunk(content, token);
if (result) {
await result;
}
}
else {
for await (const line of content) {
assert(!line.includes("\n"));
const result = this._reader.processLogLine(line, token);
if (result) {
await result;
}
if (estimatedLogSize) {
progress.report({ increment: (line.length + 1) * 100 / estimatedLogSize, message: "Processing log..." });
}
}
}
this._profile.finalize();
this._messageOnlyProgress = undefined;
}
/**
* Processes log content.
* @param content Either a `string` consisting of the entire file, or an `AsyncIterable<string>` that yields each line of the file.
* @param progress An object used to report progress.
* @param token A token used to observe cancellation.
* @param estimatedLogSize The estimated size of the log.
* @returns The resulting `LogFile`.
*/
async process(content: string | AsyncIterable<string>, progress: Progress<{ increment?: number, message?: string }>, token: CancellationToken, estimatedLogSize?: number) {
if (this._processed) throw new Error("Processing already completed");
this._processed = true;
try {
await measureAsync("processContent", () => this.processContent(content, progress, token, estimatedLogSize));
progress.report({ message: "Resolving Files..." });
await measureAsync("resolveFiles", async () => {
const workQueue = new ConsArray<Uri>();
workQueue.concat([...this._seenFiles]);
const resolvedFiles = new StringSet(uriToString);
for (const file of workQueue.values()) {
if (token.isCancellationRequested) throw new CancellationError();
if (resolvedFiles.has(file)) continue;
resolvedFiles.add(file);
// Resolve the file
const resolution = this._sources.getExistingResolution(file) ?? await this._sources.resolveAsync(file);
if (resolution.result === "skip") continue;
// Resolve the source map
const sourceMap = this._sources.getExistingSourceMap(file) ?? await this._sources.getSourceMapAsync(file);
if (sourceMap === "no-sourcemap") continue;
// add the sources of the source map to be processed in the next pass.
workQueue.concat(sourceMap.sources);
}
});
measureSync("resolveLocations", () => {
// Resolve source locations. We must do this in advance to get the correct file information for the UI.
progress.report({ message: "Resolving locations..." });
type ResolutionWorkItem =
| CodeEntry
| FunctionEntry
| IcEntry
| DeoptEntry
| MapEntryUpdate
;
// // fixup map properties where the source wasn't resolved
// for (const maps of this._maps.exportValues())
// for (const map of maps) {
// let stringProperties: Map<string, FunctionEntry> | undefined;
// let symbolProperties: HashMap<SymbolName, FunctionEntry> | undefined;
// for (const property of map.properties) {
// if (property.source) continue;
// if (!stringProperties || !symbolProperties) {
// stringProperties = new Map();
// symbolProperties = new HashMap(SymbolNameEqualer);
// for (const update of map.updates) {
// if (!update.functionEntry) continue;
// if (typeof update.name === "string") {
// stringProperties.set(update.name, update.functionEntry);
// }
// else {
// symbolProperties.set(update.name, update.functionEntry);
// }
// }
// }
// if (typeof property.name === "string") {
// property.source = stringProperties.get(property.name);
// }
// else {
// property.source = symbolProperties.get(property.name);
// }
// }
// }
const workItems: Iterable<ResolutionWorkItem> = from<ResolutionWorkItem>(empty())
.concat(this._profile.dynamicCodeEntries())
.concat(this._functions.values())
.concat(this._ics.values())
.concat(this._deopts.values())
.concat(flatMap(flatMap(this._maps.exportValues(), identity), map => map.updates));
for (const entry of workItems) {
if (token.isCancellationRequested) throw new CancellationError();
if (!entry.filePosition) continue;
// resolve the file location
const uri = entry.filePosition.uri;
const resolution = this._sources.getExistingResolution(uri);
assert(resolution, `Should have resolved source file for ${uri.toString()} in an earlier step.`);
if (resolution.result === "redirect") {
switch (entry.kind) {
case "function": this._functions.delete(entry.filePosition); break;
case "ic": this._ics.delete(entry.filePosition); break;
case "deopt": this._deopts.delete(entry.filePosition); break;
}
entry.filePosition = new Location(resolution.file, entry.filePosition.range);
switch (entry.kind) {
case "function": this._functions.set(entry.filePosition, entry); break;
case "ic": this._ics.set(entry.filePosition, entry); break;
case "deopt": this._deopts.set(entry.filePosition, entry); break;
}
}
if (resolution.result !== "skip") {
const sourceMap = this._sources.getExistingSourceMap(uri);
assert(sourceMap, "Should have resolved source-map in an earlier step.");
if (sourceMap !== "no-sourcemap") {
let sourceLocation: Location | undefined = sourceMap.toSourceLocation(entry.filePosition.range.start);
if (sourceLocation) {
const canonicalUri = getCanonicalUri(sourceLocation.uri);
const resolution = this._sources.getExistingResolution(canonicalUri);
assert(resolution, "Should have resolved source location in an earlier step");
if (resolution.result === "redirect") {
sourceLocation = new Location(resolution.file, sourceLocation.range);
}
entry.generatedFilePosition = entry.filePosition;
entry.filePosition = sourceLocation;
switch (entry.kind) {
case "function":
case "ic":
case "deopt":
case "map-update":
if (sourceLocation instanceof SourceLocation && sourceLocation.name && !entry.generatedFunctionName) {
entry.generatedFunctionName = entry.functionName;
entry.functionName = sourceLocation.name;
}
break;
}
switch (entry.kind) {
case "function": this._functions.set(entry.filePosition, entry); break;
case "ic": this._ics.set(entry.filePosition, entry); break;
case "deopt": this._deopts.set(entry.filePosition, entry); break;
}
}
}
}
switch (entry.kind) {
case "function":
case "ic":
case "deopt":
this.addEntry(entry);
break;
}
if (this._sources.has(entry.filePosition.uri)) {
this._sourcePaths.add(entry.filePosition.uri);
switch (entry.kind) {
case "function": this.getFileEntry(entry.filePosition.uri).functions.push(entry); break;
case "ic": this.getFileEntry(entry.filePosition.uri).ics.push(entry); break;
case "deopt": this.getFileEntry(entry.filePosition.uri).deopts.push(entry); break;
}
}
if (entry.generatedFilePosition) {
if (this._sources.has(entry.generatedFilePosition.uri)) {
this._generatedPaths.add(entry.generatedFilePosition.uri);
switch (entry.kind) {
case "function": this.getFileEntry(entry.generatedFilePosition.uri).functions.push(entry); break;
case "ic": this.getFileEntry(entry.generatedFilePosition.uri).ics.push(entry); break;
case "deopt": this.getFileEntry(entry.generatedFilePosition.uri).deopts.push(entry); break;
}
}
}
}
});
// Sort entries by reference location
for (const fileEntry of this._files.values()) {
fileEntry.functions = from(fileEntry.functions)
.orderBy(entry => entry.filePosition, LocationComparer)
.distinct()
.toArray();
fileEntry.ics = from(fileEntry.ics)
.orderBy(entry => entry.filePosition, LocationComparer)
.distinct()
.toArray();
fileEntry.deopts = from(fileEntry.deopts)
.orderBy(entry => entry.filePosition, LocationComparer)
.distinct()
.toArray();
}
return new LogFile(
this._version,
this._entries,
this._files,
new StringMap<MapId, MapEntry>(
mapId => mapId.toString(),
flatMap(this._maps.exportKeysAndValues(), ([address, maps]) => map(maps, (map, index) => [new MapId(address, index), map] as [MapId, MapEntry]))),
this._profile,
new MemoryOverview(
this._heapCapacity,
this._heapAvailable,
this._memorySize,
this._maxMemorySize,
this._memorySizes,
this._entrySizes,
),
this._sourcePaths,
this._generatedPaths,
this._sources
);
}
catch (e) {
if (e instanceof CancellationError ||
e instanceof CancelError) {
throw e;
}
console.error(e);
debugger;
throw e;
}
}
private findFunctionBySfiAddress(address: Address) {
const func = this._profile.findEntry(address);
if (func instanceof SharedFunctionCodeEntry) {
const { filePosition } = func.functionName;
const entry = filePosition && this._functions.get(filePosition);
return entry;
}
}
private findFunctionByCodeAddress(address: Address) {
const code = this._profile.findEntry(address);
if (code?.isJSFunction?.()) {
const { filePosition } = code.func.functionName;
const entry = filePosition && this._functions.get(filePosition);
return entry;
}
}
private findProfileEntry(pc: Address) {
const code = this._profile.findEntry(pc);
if (code?.isJSFunction) {
return code as DynamicCodeEntry;
}
}
private addEntry(entry: Entry) {
let entries = this._entries.get(entry.filePosition);
if (!entries) this._entries.set(entry.filePosition, entries = {});
(entries[entry.kind] as Entry) = entry;
if (entry.generatedFilePosition) {
let entries = this._entries.get(entry.generatedFilePosition);
if (!entries) this._entries.set(entry.generatedFilePosition, entries = {});
(entries[entry.kind] as Entry) = entry;
}
}
private getFileEntry(file: Uri) {
let fileEntry = this._files.get(file);
if (!fileEntry) this._files.set(file, fileEntry = { functions: [], ics: [], deopts: [] });
return fileEntry;
}
// #region functions
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1087
private async processSharedLibrary(libName: string, startAddress: Address, endAddress: Address, aslrSlide: number, token: CancellationToken | undefined) {
const entry = this._profile.addLibrary(libName, startAddress, endAddress);
this._codeTypes.set(entry.getName(), CodeType.SharedLib);
await this._cppEntriesProvider.parseVmSymbols(libName, startAddress, endAddress, aslrSlide, (name, startAddress, endAddress) => {
this._profile.addStaticCode(`${name} ${libName}`, startAddress, endAddress);
this._codeTypes.set(name, CodeType.Cpp);
}, this._messageOnlyProgress, token);
this._messageOnlyProgress?.report("Processing log...");
const size = Number(endAddress - startAddress);
this.changeMemoryCategorySize(this._entrySizes, "Shared Library Code", size);
}
// CODE_CREATION_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L33
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1329
//
private processCodeCreation(type: string, kind: CodeKind, timestamp: TimeTicks, startAddress: Address, size: number, name: string, funcStartAddress?: Address, state?: FunctionState) {
// NOTE: Line information collected in https://github.com/v8/v8/blob/6bbf2dfa5b3bde9a40527268741b739f7d7e4bd0/src/profiler/profiler-listener.cc#L115
if (funcStartAddress !== undefined && state !== undefined) {
const code = this._profile.addFuncCode(type, name, timestamp, startAddress, size, funcStartAddress, state);
code.code_kind = kind;
let entry: FunctionEntry | undefined;
if (code.functionName.filePosition) {
entry = this._functions.get(code.functionName.filePosition);
if (!entry) {
entry = new FunctionEntry(this._sources, type, kind, code.functionName.name, code.functionName.filePosition);
this._functions.set(code.functionName.filePosition, entry);
}
entry.lastSfiAddress = funcStartAddress;
entry.updates.push(new FunctionEntryUpdate(timestamp, state));
entry.timeline.push({ event: entry.timeline.length ? "updated" : "created", timestamp, startAddress, funcStartAddress, size, state, codeKind: kind, type });
}
if (code.functionName.filePosition) {
this._seenFiles.add(code.functionName.filePosition.uri);
}
}
else {
const code = this._profile.addCode(type, name, timestamp, startAddress, size);
code.code_kind = kind;
this._codeEntries.push(code);
if (code.functionName.filePosition) {
this._seenFiles.add(code.functionName.filePosition.uri);
}
}
this.changeMemoryCategorySize(this._entrySizes, type, size);
}
private _codeEntries: DynamicCodeEntry[] = [];
// CODE_MOVE_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L35
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1456
private processCodeMove(fromAddress: Address, toAddress: Address) {
const code = this._profile.findEntry(fromAddress);
if (code?.isJSFunction?.()) {
const { filePosition } = code.func.functionName;
const entry = filePosition && this._functions.get(filePosition);
entry?.timeline.push({ event: "moved", timestamp: this._lastTimestamp, fromAddress, toAddress });
}
this._profile.moveCode(fromAddress, toAddress);
}
// SHARED_FUNC_MOVE_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L38
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1567
private processSharedFunctionMove(fromAddress: Address, toAddress: Address) {
const func = this._profile.findEntry(fromAddress);
if (func instanceof SharedFunctionCodeEntry) {
const { filePosition } = func.functionName;
const entry = filePosition && this._functions.get(filePosition);
if (entry) {
entry.lastSfiAddress = toAddress;
entry.timeline.push({ event: "sfi-moved", timestamp: this._lastTimestamp, fromAddress, toAddress });
}
}
this._profile.moveFunc(fromAddress, toAddress);
}
// CODE_DELETE_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L36
private processCodeDelete(startAddress: Address) {
const code = this._profile.findEntry(startAddress);
if (code?.isJSFunction?.()) {
const { filePosition } = code.func.functionName;
const entry = filePosition && this._functions.get(filePosition);
if (entry) {
entry.timeline.push({ event: "deleted", timestamp: this._lastTimestamp, startAddress });
}
}
this._profile.deleteCode(startAddress);
if (code) {
this.changeMemoryCategorySize(this._entrySizes, code.type, code.size);
}
}
// CODE_DISABLE_OPT_EVENT
// event definition: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/code-events.h#L34
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1473
private processCodeDisableOptimization(name: string, reason: string) {
}
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1699
private processScriptSource(scriptId: number, url: string, source: string) {
const uri = url ? getCanonicalUri(isPathOrUriString(url) ? pathOrUriStringToUri(url) : resolveUri(Uri.parse("unknown:", /*strict*/ true), url)) : undefined;
if (uri) {
this._seenFiles.add(uri);
}
this._profile.addScriptSource(scriptId, uri, source);
}
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1243
//
// code-source-info,<addr>,<script>,<start>,<end>,<pos>,<inline-pos>,<fns>
//
// where
// <addr> is code object address
// <script> is script id
// <start> is the starting position inside the script
// <end> is the end position inside the script
// <pos> is source position table encoded in the string,
// it is a sequence of C<code-offset>O<script-offset>[I<inlining-id>]
// where
// <code-offset> is the offset within the code object
// <script-offset> is the position within the script
// <inlining-id> is the offset in the <inlining> table
// <inlining> table is a sequence of strings of the form
// F<function-id>O<script-offset>[I<inlining-id>]
// where
// <function-id> is an index into the <fns> function table
// <fns> is the function table encoded as a sequence of strings
// S<shared-function-info-address>
private processCodeSourceInfo(startAddress: Address, scriptId: number, startPos: number, endPos: number, sourcePositions: string, inliningPositions: string, inlinedFunctions: string) {
return this._profile.addSourcePositions(startAddress, scriptId, startPos, endPos, sourcePositions, inliningPositions, inlinedFunctions);
}
// #endregion functions
// #region ics
private processIcEventUsingLastTimestamp(type: IcType, pc: Address, line: number, column: number, oldState: IcState, newState: IcState, mapAddress: Address, key: string, modifier: string, slowReason: string) {
return this.processIcEvent(type, pc, this._lastTimestamp, line, column, oldState, newState, mapAddress, key, modifier, slowReason);
}
private processIcEvent(type: IcType, pc: Address, timestamp: TimeTicks, line: number, column: number, oldState: IcState, newState: IcState, mapAddress: Address, key: string, modifier: string, slowReason: string) {
const code = this.findProfileEntry(pc);
if (code) {
// Get the name of the function and its file position
const name = code.functionName.name;
const codeFilePosition = code.filePosition ?? code.functionName.filePosition;
if (codeFilePosition) {
const uri = codeFilePosition.uri;
const icFilePosition = new Location(uri, new Position(Math.max(0, line - 1), Math.max(0, column - 1)));
// record an inline cache at this position
let entry = this._ics.get(icFilePosition);
if (!entry) {
entry = new IcEntry(this._sources, name, icFilePosition);
this._ics.set(icFilePosition, entry);
}
let mapId = MapId.NONE;
let map: MapEntry | undefined;
if (mapAddress !== kNullAddress) {
const maps = this._maps.find(mapAddress)?.value;
const mapIndex = maps ? maps.length - 1 : 0;
map = maps?.[mapIndex];
mapId = new MapId(mapAddress, mapIndex);
}
const update = new IcEntryUpdate(
timestamp,
type,
oldState,
newState,
key,
mapId,
map,
code.isJSFunction() ? code.state : undefined
);
update.functionEntry = this._functions.get(codeFilePosition);
entry.updates.push(update);
if (codeFilePosition) {
this._functions.get(codeFilePosition)?.timeline.push({ event: "ic", timestamp, entry, update });
}
if (map) {
let mapReferences = this._mapReferences.get(map);
if (!mapReferences) this._mapReferences.set(map, mapReferences = new Set());
if (!mapReferences.has(entry)) {
mapReferences.add(entry);
map.referencedBy.push(new MapReferencedByIcEntryUpdate(entry, update));
}
}
}
}
}
// #endregion ics
// #region deopts
// event source: https://github.com/v8/v8/blob/01c670e416310453b01533a85057a3e2db3ac64f/src/logging/log.cc#L1484
private processCodeDeopt(timestamp: TimeTicks, size: number, pc: Address, inliningId: number, scriptOffset: number, bailoutType: DeoptimizeKind, deoptPosition: DeoptPosition, deoptReason: string) {
const code = this.findProfileEntry(pc);
assert(code);