src/third_party/trace-viewer/trace_viewer/tracing/importer/linux_perf/workqueue_parser.html

   1 <!DOCTYPE html>
   2 <!--
   3 Copyright (c) 2012 The Chromium Authors. All rights reserved.
   4 Use of this source code is governed by a BSD-style license that can be
   5 found in the LICENSE file.
   6 -->
   7
   8 <link rel="import" href="/tracing/importer/linux_perf/parser.html">
   9
  10 <script>
  11 'use strict';
  12
  13 /**
  14  * @fileoverview Parses workqueue events in the Linux event trace format.
  15  */
  16 tvcm.exportTo('tracing.importer.linux_perf', function() {
  17
  18   var Parser = tracing.importer.linux_perf.Parser;
  19
  20   /**
  21    * Parses linux workqueue trace events.
  22    * @constructor
  23    */
  24   function WorkqueueParser(importer) {
  25     Parser.call(this, importer);
  26
  27     importer.registerEventHandler('workqueue_execute_start',
  28         WorkqueueParser.prototype.executeStartEvent.bind(this));
  29     importer.registerEventHandler('workqueue_execute_end',
  30         WorkqueueParser.prototype.executeEndEvent.bind(this));
  31     importer.registerEventHandler('workqueue_queue_work',
  32         WorkqueueParser.prototype.executeQueueWork.bind(this));
  33     importer.registerEventHandler('workqueue_activate_work',
  34         WorkqueueParser.prototype.executeActivateWork.bind(this));
  35   }
  36
  37   // Matches the workqueue_execute_start record
  38   //  workqueue_execute_start: work struct c7a8a89c: function MISRWrapper
  39   var workqueueExecuteStartRE = /work struct (.+): function (\S+)/;
  40
  41   // Matches the workqueue_execute_start record
  42   //  workqueue_execute_end: work struct c7a8a89c
  43   var workqueueExecuteEndRE = /work struct (.+)/;
  44
  45   WorkqueueParser.prototype = {
  46     __proto__: Parser.prototype,
  47
  48     /**
  49      * Parses workqueue events and sets up state in the importer.
  50      */
  51     executeStartEvent: function(eventName, cpuNumber, pid, ts, eventBase) {
  52       var event = workqueueExecuteStartRE.exec(eventBase.details);
  53       if (!event)
  54         return false;
  55
  56       var kthread = this.importer.getOrCreateKernelThread(eventBase.threadName,
  57           pid, pid);
  58       kthread.openSliceTS = ts;
  59       kthread.openSlice = event[2];
  60       return true;
  61     },
  62
  63     executeEndEvent: function(eventName, cpuNumber, pid, ts, eventBase) {
  64       var event = workqueueExecuteEndRE.exec(eventBase.details);
  65       if (!event)
  66         return false;
  67
  68       var kthread = this.importer.getOrCreateKernelThread(eventBase.threadName,
  69           pid, pid);
  70       if (kthread.openSlice) {
  71         var slice = new tracing.trace_model.Slice('', kthread.openSlice,
  72             tvcm.ui.getStringColorId(kthread.openSlice),
  73             kthread.openSliceTS,
  74             {},
  75             ts - kthread.openSliceTS);
  76
  77         kthread.thread.sliceGroup.pushSlice(slice);
  78       }
  79       kthread.openSlice = undefined;
  80       return true;
  81     },
  82
  83     executeQueueWork: function(eventName, cpuNumber, pid, ts, eventBase) {
  84       // TODO: Do something with this event?
  85       return true;
  86     },
  87
  88     executeActivateWork: function(eventName, cpuNumber, pid, ts, eventBase) {
  89       // TODO: Do something with this event?
  90       return true;
  91     }
  92
  93   };
  94
  95   Parser.registerSubtype(WorkqueueParser);
  96
  97   return {
  98     WorkqueueParser: WorkqueueParser
  99   };
 100 });
 101 </script>
 102