| <!DOCTYPE html> |
| <!-- |
| Copyright 2015 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <link rel="import" href="/tracing/model/source_info/js_source_info.html"> |
| |
| <script> |
| 'use strict'; |
| |
| /** |
| * @fileoverview TraceCodeEntry is a wrapper around the V8 CodeEntry that |
| * extracts extra context information for each item. This includes things like |
| * the source file, line and if the function is a native method or not. |
| */ |
| tr.exportTo('tr.e.importer', function() { |
| function TraceCodeEntry(address, size, name, scriptId) { |
| this.id_ = tr.b.GUID.allocate(); |
| this.address_ = address; |
| this.size_ = size; |
| |
| // Stolen from DevTools TimelineJSProfileProcessor._buildCallFrame |
| // Code states: |
| // (empty) -> compiled |
| // ~ -> optimizable |
| // * -> optimized |
| var rePrefix = /^(\w*:)?([*~]?)(.*)$/m; |
| var tokens = rePrefix.exec(name); |
| var prefix = tokens[1]; |
| var state = tokens[2]; |
| var body = tokens[3]; |
| |
| if (state === '*') { |
| state = tr.model.source_info.JSSourceState.OPTIMIZED; |
| } else if (state === '~') { |
| state = tr.model.source_info.JSSourceState.OPTIMIZABLE; |
| } else if (state === '') { |
| state = tr.model.source_info.JSSourceState.COMPILED; |
| } else { |
| console.warning('Unknown v8 code state ' + state); |
| state = tr.model.source_info.JSSourceState.UNKNOWN; |
| } |
| |
| var rawName; |
| var rawUrl; |
| if (prefix === 'Script:') { |
| rawName = ''; |
| rawUrl = body; |
| } else { |
| var spacePos = body.lastIndexOf(' '); |
| rawName = spacePos !== -1 ? body.substr(0, spacePos) : body; |
| rawUrl = spacePos !== -1 ? body.substr(spacePos + 1) : ''; |
| } |
| |
| function splitLineAndColumn(url) { |
| var lineColumnRegEx = /(?::(\d+))?(?::(\d+))?$/; |
| var lineColumnMatch = lineColumnRegEx.exec(url); |
| var lineNumber; |
| var columnNumber; |
| |
| if (typeof(lineColumnMatch[1]) === 'string') { |
| lineNumber = parseInt(lineColumnMatch[1], 10); |
| // Immediately convert line and column to 0-based numbers. |
| lineNumber = isNaN(lineNumber) ? undefined : lineNumber - 1; |
| } |
| if (typeof(lineColumnMatch[2]) === 'string') { |
| columnNumber = parseInt(lineColumnMatch[2], 10); |
| columnNumber = isNaN(columnNumber) ? undefined : columnNumber - 1; |
| } |
| |
| return { |
| url: url.substring(0, url.length - lineColumnMatch[0].length), |
| lineNumber: lineNumber, |
| columnNumber: columnNumber |
| }; |
| } |
| |
| var nativeSuffix = ' native'; |
| var isNative = rawName.endsWith(nativeSuffix); |
| this.name_ = |
| isNative ? rawName.slice(0, -nativeSuffix.length) : rawName; |
| |
| var urlData = splitLineAndColumn(rawUrl); |
| var url = urlData.url || ''; |
| var line = urlData.lineNumber || 0; |
| var column = urlData.columnNumber || 0; |
| |
| this.sourceInfo_ = new tr.model.source_info.JSSourceInfo( |
| url, line, column, isNative, scriptId, state); |
| }; |
| |
| TraceCodeEntry.prototype = { |
| get id() { |
| return this.id_; |
| }, |
| |
| get sourceInfo() { |
| return this.sourceInfo_; |
| }, |
| |
| get name() { |
| return this.name_; |
| }, |
| |
| set address(address) { |
| this.address_ = address; |
| }, |
| |
| get address() { |
| return this.address_; |
| }, |
| |
| set size(size) { |
| this.size_ = size; |
| }, |
| |
| get size() { |
| return this.size_; |
| } |
| }; |
| |
| return { |
| TraceCodeEntry: TraceCodeEntry |
| }; |
| }); |
| </script> |
| |
