| <!DOCTYPE html> |
| <!-- |
| Copyright (c) 2013 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="/extras/importer/linux_perf/parser.html"> |
| |
| <script> |
| 'use strict'; |
| |
| /** |
| * @fileoverview Parses graph_ent and graph_ret events that were inserted by |
| * the Linux kernel's function graph trace. |
| */ |
| tr.exportTo('tr.e.importer.linux_perf', function() { |
| |
| var LinuxPerfParser = tr.e.importer.linux_perf.Parser; |
| |
| /** |
| * Parses graph_ent and graph_ret events that were inserted by the Linux |
| * kernel's function graph trace. |
| * @constructor |
| */ |
| function KernelFuncParser(importer) { |
| LinuxPerfParser.call(this, importer); |
| |
| importer.registerEventHandler('graph_ent', |
| KernelFuncParser.prototype.traceKernelFuncEnterEvent. |
| bind(this)); |
| importer.registerEventHandler('graph_ret', |
| KernelFuncParser.prototype.traceKernelFuncReturnEvent. |
| bind(this)); |
| |
| this.model_ = importer.model_; |
| this.ppids_ = {}; |
| } |
| |
| var TestExports = {}; |
| |
| var funcEnterRE = new RegExp('func=(.+)'); |
| TestExports.funcEnterRE = funcEnterRE; |
| |
| KernelFuncParser.prototype = { |
| __proto__: LinuxPerfParser.prototype, |
| |
| traceKernelFuncEnterEvent: function(eventName, cpuNumber, pid, ts, |
| eventBase) { |
| var eventData = funcEnterRE.exec(eventBase.details); |
| if (!eventData) |
| return false; |
| |
| if (eventBase.tgid === undefined) { |
| return false; |
| } |
| |
| var tgid = parseInt(eventBase.tgid); |
| var name = eventData[1]; |
| var thread = this.model_.getOrCreateProcess(tgid) |
| .getOrCreateThread(pid); |
| thread.name = eventBase.threadName; |
| |
| var slices = thread.kernelSliceGroup; |
| if (!slices.isTimestampValidForBeginOrEnd(ts)) { |
| this.model_.importWarning({ |
| type: 'parse_error', |
| message: 'Timestamps are moving backward.' |
| }); |
| return false; |
| } |
| |
| var slice = slices.beginSlice(null, name, ts, {}); |
| |
| return true; |
| }, |
| |
| traceKernelFuncReturnEvent: function(eventName, cpuNumber, pid, ts, |
| eventBase) { |
| if (eventBase.tgid === undefined) { |
| return false; |
| } |
| |
| var tgid = parseInt(eventBase.tgid); |
| var thread = this.model_.getOrCreateProcess(tgid) |
| .getOrCreateThread(pid); |
| thread.name = eventBase.threadName; |
| |
| var slices = thread.kernelSliceGroup; |
| if (!slices.isTimestampValidForBeginOrEnd(ts)) { |
| this.model_.importWarning({ |
| type: 'parse_error', |
| message: 'Timestamps are moving backward.' |
| }); |
| return false; |
| } |
| |
| if (slices.openSliceCount > 0) { |
| slices.endSlice(ts); |
| } |
| |
| return true; |
| } |
| }; |
| |
| LinuxPerfParser.register(KernelFuncParser); |
| |
| return { |
| KernelFuncParser: KernelFuncParser |
| }; |
| }); |
| </script> |
| |
