257b0a43ac
Design doc: https://docs.google.com/document/d/1rxM3sDd-ZiOLznqw7MvYraulAPWJSVqC_CztO4YpUTQ/edit Change-Id: I471ff31f32b7bdd22cb03005c1dcc18aa485ad77 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3313793 Auto-Submit: Jianxiao Lu <jianxiao.lu@intel.com> Reviewed-by: Camillo Bruni <cbruni@chromium.org> Commit-Queue: Shiyu Zhang <shiyu.zhang@intel.com> Cr-Commit-Position: refs/heads/main@{#78428}
111 lines
3.2 KiB
JavaScript
111 lines
3.2 KiB
JavaScript
// Copyright 2021 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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import {calcOffsetInVMCage} from '../js/helper.mjs';
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import {DOM, FileReader,} from '../js/web-api-helper.mjs';
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import {kSpaceNames} from './space-categories.mjs';
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class TraceLogParseHelper {
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static re_gc_header = /(Before|After) GC:\d/;
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static re_page_info =
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/\{owner:.+,address:.+,size:.+,allocated_bytes:.+,wasted_memory:.+\}/;
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static re_owner = /(?<=owner:)[a-z_]+_space/;
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static re_address = /(?<=address:)0x[a-f0-9]+(?=,)/;
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static re_size = /(?<=size:)\d+(?=,)/;
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static re_allocated_bytes = /(?<=allocated_bytes:)\d+(?=,)/;
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static re_wasted_memory = /(?<=wasted_memory:)\d+(?=})/;
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static matchGCHeader(content) {
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return this.re_gc_header.test(content);
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}
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static matchPageInfo(content) {
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return this.re_page_info.test(content);
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}
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static parsePageInfo(content) {
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const owner = this.re_owner.exec(content)[0];
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const address =
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calcOffsetInVMCage(BigInt(this.re_address.exec(content)[0], 16));
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const size = parseInt(this.re_size.exec(content)[0]);
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const allocated_bytes = parseInt(this.re_allocated_bytes.exec(content)[0]);
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const wasted_memory = parseInt(this.re_wasted_memory.exec(content)[0]);
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const info = [
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owner,
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address,
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address + size,
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allocated_bytes,
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wasted_memory,
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];
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return info;
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}
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// Create a empty snapshot.
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static createSnapShotData() {
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let snapshot = {header: null, data: {}};
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for (let space_name of kSpaceNames) {
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snapshot.data[space_name] = [];
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}
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return snapshot;
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}
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static createModelFromV8TraceFile(contents) {
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let snapshots = [];
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let snapshot = this.createSnapShotData();
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// Fill data info a snapshot, then push it into snapshots.
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for (let content of contents) {
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if (this.matchGCHeader(content)) {
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if (snapshot.header != null) {
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snapshots.push(snapshot);
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}
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snapshot = this.createSnapShotData();
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snapshot.header = content;
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continue;
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}
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if (this.matchPageInfo(content)) {
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let pageinfo = this.parsePageInfo(content);
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try {
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snapshot.data[pageinfo[0]].push(pageinfo);
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} catch (e) {
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console.error(e);
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}
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}
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}
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// EOL, push the last.
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if (snapshot.header != null) {
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snapshots.push(snapshot);
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}
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return snapshots;
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}
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}
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DOM.defineCustomElement('../js/log-file-reader', 'trace-file-reader',
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(templateText) =>
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class TraceFileReader extends FileReader {
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constructor() {
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super(templateText);
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this.fullDataFromFile = '';
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this.addEventListener('fileuploadchunk', (e) => this.handleLoadChunk(e));
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this.addEventListener('fileuploadend', (e) => this.handleLoadEnd(e));
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}
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handleLoadChunk(event) {
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this.fullDataFromFile += event.detail;
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}
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handleLoadEnd(event) {
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let contents = this.fullDataFromFile.split('\n');
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let snapshots = TraceLogParseHelper.createModelFromV8TraceFile(contents);
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this.dispatchEvent(new CustomEvent('change', {
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bubbles: true,
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composed: true,
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detail: snapshots,
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}));
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}
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});
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