1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5'use strict'; 6 7/** 8 * @fileoverview Parses drm driver events in the Linux event trace format. 9 */ 10base.require('tracing.importer.linux_perf.parser'); 11base.exportTo('tracing.importer.linux_perf', function() { 12 13 var Parser = tracing.importer.linux_perf.Parser; 14 15 /** 16 * Parses linux drm trace events. 17 * @constructor 18 */ 19 function DrmParser(importer) { 20 Parser.call(this, importer); 21 22 importer.registerEventHandler('drm_vblank_event', 23 DrmParser.prototype.vblankEvent.bind(this)); 24 } 25 26 DrmParser.prototype = { 27 __proto__: Parser.prototype, 28 29 drmVblankSlice: function(ts, eventName, args) { 30 var kthread = this.importer.getOrCreatePseudoThread('drm_vblank'); 31 kthread.openSlice = eventName; 32 var slice = new tracing.trace_model.Slice('', kthread.openSlice, 33 tracing.getStringColorId(kthread.openSlice), ts, args, 0); 34 35 kthread.thread.sliceGroup.pushSlice(slice); 36 }, 37 38 /** 39 * Parses drm driver events and sets up state in the importer. 40 */ 41 vblankEvent: function(eventName, cpuNumber, pid, ts, eventBase) { 42 var event = /crtc=(\d+), seq=(\d+)/.exec(eventBase.details); 43 if (!event) 44 return false; 45 46 var crtc = parseInt(event[1]); 47 var seq = parseInt(event[2]); 48 this.drmVblankSlice(ts, 'vblank:' + crtc, 49 { 50 crtc: crtc, 51 seq: seq 52 }); 53 return true; 54 } 55 }; 56 57 Parser.registerSubtype(DrmParser); 58 59 return { 60 DrmParser: DrmParser 61 }; 62}); 63