Jamie Gennis | 2da489c | 2012-09-19 18:06:29 -0700 | [diff] [blame] | 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 | /** |
| 6 | * @fileoverview Imports text files in the Linux event trace format into the |
| 7 | * timeline model. This format is output both by sched_trace and by Linux's perf |
| 8 | * tool. |
| 9 | * |
| 10 | * This importer assumes the events arrive as a string. The unit tests provide |
| 11 | * examples of the trace format. |
| 12 | * |
| 13 | * Linux scheduler traces use a definition for 'pid' that is different than |
| 14 | * tracing uses. Whereas tracing uses pid to identify a specific process, a pid |
| 15 | * in a linux trace refers to a specific thread within a process. Within this |
| 16 | * file, we the definition used in Linux traces, as it improves the importing |
| 17 | * code's readability. |
| 18 | */ |
| 19 | base.require('timeline_model'); |
| 20 | base.require('timeline_color_scheme'); |
| 21 | base.require('linux_perf_cpufreq_parser'); |
| 22 | base.require('linux_perf_drm_parser'); |
| 23 | base.require('linux_perf_exynos_parser'); |
| 24 | base.require('linux_perf_gesture_parser'); |
| 25 | base.require('linux_perf_i915_parser'); |
| 26 | base.require('linux_perf_mali_parser'); |
| 27 | base.require('linux_perf_power_parser'); |
| 28 | base.require('linux_perf_sched_parser'); |
| 29 | base.require('linux_perf_workqueue_parser'); |
| 30 | base.require('linux_perf_android_parser'); |
| 31 | |
| 32 | base.exportTo('tracing', function() { |
| 33 | /** |
| 34 | * Represents the scheduling state for a single thread. |
| 35 | * @constructor |
| 36 | */ |
| 37 | function CpuState(cpu) { |
| 38 | this.cpu = cpu; |
| 39 | } |
| 40 | |
| 41 | CpuState.prototype = { |
| 42 | __proto__: Object.prototype, |
| 43 | |
| 44 | /** |
| 45 | * Switches the active pid on this Cpu. If necessary, add a TimelineSlice |
| 46 | * to the cpu representing the time spent on that Cpu since the last call to |
| 47 | * switchRunningLinuxPid. |
| 48 | */ |
| 49 | switchRunningLinuxPid: function(importer, prevState, ts, pid, comm, prio) { |
| 50 | // Generate a slice if the last active pid was not the idle task |
| 51 | if (this.lastActivePid !== undefined && this.lastActivePid != 0) { |
| 52 | var duration = ts - this.lastActiveTs; |
| 53 | var thread = importer.threadsByLinuxPid[this.lastActivePid]; |
| 54 | if (thread) |
| 55 | name = thread.userFriendlyName; |
| 56 | else |
| 57 | name = this.lastActiveComm; |
| 58 | |
| 59 | var slice = new tracing.TimelineSlice('', name, |
| 60 | tracing.getStringColorId(name), |
| 61 | this.lastActiveTs, |
| 62 | { |
| 63 | comm: this.lastActiveComm, |
| 64 | tid: this.lastActivePid, |
| 65 | prio: this.lastActivePrio, |
| 66 | stateWhenDescheduled: prevState |
| 67 | }, |
| 68 | duration); |
| 69 | this.cpu.slices.push(slice); |
| 70 | } |
| 71 | |
| 72 | this.lastActiveTs = ts; |
| 73 | this.lastActivePid = pid; |
| 74 | this.lastActiveComm = comm; |
| 75 | this.lastActivePrio = prio; |
| 76 | } |
| 77 | }; |
| 78 | |
| 79 | /** |
| 80 | * Imports linux perf events into a specified model. |
| 81 | * @constructor |
| 82 | */ |
| 83 | function LinuxPerfImporter(model, events) { |
| 84 | this.importPriority = 2; |
| 85 | this.model_ = model; |
| 86 | this.events_ = events; |
| 87 | this.clockSyncRecords_ = []; |
| 88 | this.cpuStates_ = {}; |
| 89 | this.kernelThreadStates_ = {}; |
| 90 | this.buildMapFromLinuxPidsToTimelineThreads(); |
| 91 | this.lineNumber = -1; |
| 92 | this.pseudoThreadCounter = 1; |
| 93 | this.parsers_ = []; |
| 94 | this.eventHandlers_ = {}; |
| 95 | } |
| 96 | |
| 97 | TestExports = {}; |
| 98 | |
| 99 | // Matches the default trace record in 3.2 and later (includes irq-info): |
| 100 | // <idle>-0 [001] d... 1.23: sched_switch |
| 101 | var lineREWithIRQInfo = new RegExp( |
| 102 | '^\\s*(.+?)\\s+\\[(\\d+)\\]' + '\\s+[dX.][N.][Hhs.][0-9a-f.]' + |
| 103 | '\\s+(\\d+\\.\\d+):\\s+(\\S+):\\s(.*)$'); |
| 104 | TestExports.lineREWithIRQInfo = lineREWithIRQInfo; |
| 105 | |
| 106 | // Matches the default trace record pre-3.2: |
| 107 | // <idle>-0 [001] 1.23: sched_switch |
| 108 | var lineRE = /^\s*(.+?)\s+\[(\d+)\]\s*(\d+\.\d+):\s+(\S+):\s(.*)$/; |
| 109 | TestExports.lineRE = lineRE; |
| 110 | |
| 111 | // Matches the trace_event_clock_sync record |
| 112 | // 0: trace_event_clock_sync: parent_ts=19581477508 |
| 113 | var traceEventClockSyncRE = /trace_event_clock_sync: parent_ts=(\d+\.?\d*)/; |
| 114 | TestExports.traceEventClockSyncRE = traceEventClockSyncRE; |
| 115 | |
| 116 | // Some kernel trace events are manually classified in slices and |
| 117 | // hand-assigned a pseudo PID. |
| 118 | var pseudoKernelPID = 0; |
| 119 | |
| 120 | /** |
| 121 | * Deduce the format of trace data. Linix kernels prior to 3.3 used |
| 122 | * one format (by default); 3.4 and later used another. |
| 123 | * |
| 124 | * @return {string} the regular expression for parsing data when |
| 125 | * the format is recognized; otherwise null. |
| 126 | */ |
| 127 | function autoDetectLineRE(line) { |
| 128 | if (lineREWithIRQInfo.test(line)) |
| 129 | return lineREWithIRQInfo; |
| 130 | if (lineRE.test(line)) |
| 131 | return lineRE; |
| 132 | return null; |
| 133 | }; |
| 134 | TestExports.autoDetectLineRE = autoDetectLineRE; |
| 135 | |
| 136 | /** |
| 137 | * Guesses whether the provided events is a Linux perf string. |
| 138 | * Looks for the magic string "# tracer" at the start of the file, |
| 139 | * or the typical task-pid-cpu-timestamp-function sequence of a typical |
| 140 | * trace's body. |
| 141 | * |
| 142 | * @return {boolean} True when events is a linux perf array. |
| 143 | */ |
| 144 | LinuxPerfImporter.canImport = function(events) { |
| 145 | if (!(typeof(events) === 'string' || events instanceof String)) |
| 146 | return false; |
| 147 | |
| 148 | if (/^# tracer:/.test(events)) |
| 149 | return true; |
| 150 | |
| 151 | var m = /^(.+)\n/.exec(events); |
| 152 | if (m) |
| 153 | events = m[1]; |
| 154 | if (autoDetectLineRE(events)) |
| 155 | return true; |
| 156 | |
| 157 | return false; |
| 158 | }; |
| 159 | |
| 160 | LinuxPerfImporter.prototype = { |
| 161 | __proto__: Object.prototype, |
| 162 | |
| 163 | /** |
| 164 | * Precomputes a lookup table from linux pids back to existing |
| 165 | * TimelineThreads. This is used during importing to add information to each |
| 166 | * timeline thread about whether it was running, descheduled, sleeping, et |
| 167 | * cetera. |
| 168 | */ |
| 169 | buildMapFromLinuxPidsToTimelineThreads: function() { |
| 170 | this.threadsByLinuxPid = {}; |
| 171 | this.model_.getAllThreads().forEach( |
| 172 | function(thread) { |
| 173 | this.threadsByLinuxPid[thread.tid] = thread; |
| 174 | }.bind(this)); |
| 175 | }, |
| 176 | |
| 177 | /** |
| 178 | * @return {CpuState} A CpuState corresponding to the given cpuNumber. |
| 179 | */ |
| 180 | getOrCreateCpuState: function(cpuNumber) { |
| 181 | if (!this.cpuStates_[cpuNumber]) { |
| 182 | var cpu = this.model_.getOrCreateCpu(cpuNumber); |
| 183 | this.cpuStates_[cpuNumber] = new CpuState(cpu); |
| 184 | } |
| 185 | return this.cpuStates_[cpuNumber]; |
| 186 | }, |
| 187 | |
| 188 | /** |
| 189 | * @return {TimelinThread} A thread corresponding to the kernelThreadName. |
| 190 | */ |
| 191 | getOrCreateKernelThread: function(kernelThreadName, opt_pid, opt_tid) { |
| 192 | if (!this.kernelThreadStates_[kernelThreadName]) { |
| 193 | var pid = opt_pid; |
| 194 | if (pid == undefined) { |
| 195 | pid = /.+-(\d+)/.exec(kernelThreadName)[1]; |
| 196 | pid = parseInt(pid, 10); |
| 197 | } |
| 198 | var tid = opt_tid; |
| 199 | if (tid == undefined) |
| 200 | tid = pid; |
| 201 | |
| 202 | var thread = this.model_.getOrCreateProcess(pid).getOrCreateThread(tid); |
| 203 | thread.name = kernelThreadName; |
| 204 | this.kernelThreadStates_[kernelThreadName] = { |
| 205 | pid: pid, |
| 206 | thread: thread, |
| 207 | openSlice: undefined, |
| 208 | openSliceTS: undefined |
| 209 | }; |
| 210 | this.threadsByLinuxPid[pid] = thread; |
| 211 | } |
| 212 | return this.kernelThreadStates_[kernelThreadName]; |
| 213 | }, |
| 214 | |
| 215 | /** |
| 216 | * @return {TimelinThread} A pseudo thread corresponding to the |
| 217 | * threadName. Pseudo threads are for events that we want to break |
| 218 | * out to a separate timeline but would not otherwise happen. |
| 219 | * These threads are assigned to pseudoKernelPID and given a |
| 220 | * unique (incrementing) TID. |
| 221 | */ |
| 222 | getOrCreatePseudoThread: function(threadName) { |
| 223 | var thread = this.kernelThreadStates_[threadName]; |
| 224 | if (!thread) { |
| 225 | thread = this.getOrCreateKernelThread(threadName, pseudoKernelPID, |
| 226 | this.pseudoThreadCounter); |
| 227 | this.pseudoThreadCounter++; |
| 228 | } |
| 229 | return thread; |
| 230 | }, |
| 231 | |
| 232 | /** |
| 233 | * Imports the data in this.events_ into model_. |
| 234 | */ |
| 235 | importEvents: function(isSecondaryImport) { |
| 236 | this.createParsers(); |
| 237 | this.importCpuData(); |
| 238 | if (!this.alignClocks(isSecondaryImport)) |
| 239 | return; |
| 240 | this.buildMapFromLinuxPidsToTimelineThreads(); |
| 241 | this.buildPerThreadCpuSlicesFromCpuState(); |
| 242 | }, |
| 243 | |
| 244 | /** |
| 245 | * Called by the TimelineModel after all other importers have imported their |
| 246 | * events. |
| 247 | */ |
| 248 | finalizeImport: function() { |
| 249 | }, |
| 250 | |
| 251 | /** |
| 252 | * Builds the cpuSlices array on each thread based on our knowledge of what |
| 253 | * each Cpu is doing. This is done only for TimelineThreads that are |
| 254 | * already in the model, on the assumption that not having any traced data |
| 255 | * on a thread means that it is not of interest to the user. |
| 256 | */ |
| 257 | buildPerThreadCpuSlicesFromCpuState: function() { |
| 258 | // Push the cpu slices to the threads that they run on. |
| 259 | for (var cpuNumber in this.cpuStates_) { |
| 260 | var cpuState = this.cpuStates_[cpuNumber]; |
| 261 | var cpu = cpuState.cpu; |
| 262 | |
| 263 | for (var i = 0; i < cpu.slices.length; i++) { |
| 264 | var slice = cpu.slices[i]; |
| 265 | |
| 266 | var thread = this.threadsByLinuxPid[slice.args.tid]; |
| 267 | if (!thread) |
| 268 | continue; |
| 269 | if (!thread.tempCpuSlices) |
| 270 | thread.tempCpuSlices = []; |
| 271 | thread.tempCpuSlices.push(slice); |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | // Create slices for when the thread is not running. |
| 276 | var runningId = tracing.getColorIdByName('running'); |
| 277 | var runnableId = tracing.getColorIdByName('runnable'); |
| 278 | var sleepingId = tracing.getColorIdByName('sleeping'); |
| 279 | var ioWaitId = tracing.getColorIdByName('iowait'); |
| 280 | this.model_.getAllThreads().forEach(function(thread) { |
| 281 | if (!thread.tempCpuSlices) |
| 282 | return; |
| 283 | var origSlices = thread.tempCpuSlices; |
| 284 | delete thread.tempCpuSlices; |
| 285 | |
| 286 | origSlices.sort(function(x, y) { |
| 287 | return x.start - y.start; |
| 288 | }); |
| 289 | |
| 290 | // Walk the slice list and put slices between each original slice |
| 291 | // to show when the thread isn't running |
| 292 | var slices = []; |
| 293 | if (origSlices.length) { |
| 294 | var slice = origSlices[0]; |
| 295 | slices.push(new tracing.TimelineSlice('', 'Running', runningId, |
| 296 | slice.start, {}, slice.duration)); |
| 297 | } |
| 298 | for (var i = 1; i < origSlices.length; i++) { |
| 299 | var prevSlice = origSlices[i - 1]; |
| 300 | var nextSlice = origSlices[i]; |
| 301 | var midDuration = nextSlice.start - prevSlice.end; |
| 302 | if (prevSlice.args.stateWhenDescheduled == 'S') { |
| 303 | slices.push(new tracing.TimelineSlice('', 'Sleeping', sleepingId, |
| 304 | prevSlice.end, {}, midDuration)); |
| 305 | } else if (prevSlice.args.stateWhenDescheduled == 'R' || |
| 306 | prevSlice.args.stateWhenDescheduled == 'R+') { |
| 307 | slices.push(new tracing.TimelineSlice('', 'Runnable', runnableId, |
| 308 | prevSlice.end, {}, midDuration)); |
| 309 | } else if (prevSlice.args.stateWhenDescheduled == 'D') { |
| 310 | slices.push(new tracing.TimelineSlice( |
| 311 | '', 'Uninterruptible Sleep', ioWaitId, |
| 312 | prevSlice.end, {}, midDuration)); |
| 313 | } else if (prevSlice.args.stateWhenDescheduled == 'T') { |
| 314 | slices.push(new tracing.TimelineSlice('', '__TASK_STOPPED', |
| 315 | ioWaitId, prevSlice.end, {}, midDuration)); |
| 316 | } else if (prevSlice.args.stateWhenDescheduled == 't') { |
| 317 | slices.push(new tracing.TimelineSlice('', 'debug', ioWaitId, |
| 318 | prevSlice.end, {}, midDuration)); |
| 319 | } else if (prevSlice.args.stateWhenDescheduled == 'Z') { |
| 320 | slices.push(new tracing.TimelineSlice('', 'Zombie', ioWaitId, |
| 321 | prevSlice.end, {}, midDuration)); |
| 322 | } else if (prevSlice.args.stateWhenDescheduled == 'X') { |
| 323 | slices.push(new tracing.TimelineSlice('', 'Exit Dead', ioWaitId, |
| 324 | prevSlice.end, {}, midDuration)); |
| 325 | } else if (prevSlice.args.stateWhenDescheduled == 'x') { |
| 326 | slices.push(new tracing.TimelineSlice('', 'Task Dead', ioWaitId, |
| 327 | prevSlice.end, {}, midDuration)); |
| 328 | } else if (prevSlice.args.stateWhenDescheduled == 'W') { |
| 329 | slices.push(new tracing.TimelineSlice('', 'WakeKill', ioWaitId, |
| 330 | prevSlice.end, {}, midDuration)); |
| 331 | } else if (prevSlice.args.stateWhenDescheduled == 'D|W') { |
| 332 | slices.push(new tracing.TimelineSlice( |
| 333 | '', 'Uninterruptable Sleep | WakeKill', ioWaitId, |
| 334 | prevSlice.end, {}, midDuration)); |
| 335 | } else { |
| 336 | throw new Error('Unrecognized state: ') + |
| 337 | prevSlice.args.stateWhenDescheduled; |
| 338 | } |
| 339 | |
| 340 | slices.push(new tracing.TimelineSlice('', 'Running', runningId, |
| 341 | nextSlice.start, {}, nextSlice.duration)); |
| 342 | } |
| 343 | thread.cpuSlices = slices; |
| 344 | }); |
| 345 | }, |
| 346 | |
| 347 | /** |
| 348 | * Walks the slices stored on this.cpuStates_ and adjusts their timestamps |
| 349 | * based on any alignment metadata we discovered. |
| 350 | */ |
| 351 | alignClocks: function(isSecondaryImport) { |
| 352 | if (this.clockSyncRecords_.length == 0) { |
| 353 | // If this is a secondary import, and no clock syncing records were |
| 354 | // found, then abort the import. Otherwise, just skip clock alignment. |
| 355 | if (!isSecondaryImport) |
| 356 | return true; |
| 357 | |
| 358 | // Remove the newly imported CPU slices from the model. |
| 359 | this.abortImport(); |
| 360 | return false; |
| 361 | } |
| 362 | |
| 363 | // Shift all the slice times based on the sync record. |
| 364 | var sync = this.clockSyncRecords_[0]; |
| 365 | // NB: parentTS of zero denotes no times-shift; this is |
| 366 | // used when user and kernel event clocks are identical. |
| 367 | if (sync.parentTS == 0 || sync.parentTS == sync.perfTS) |
| 368 | return true; |
| 369 | var timeShift = sync.parentTS - sync.perfTS; |
| 370 | for (var cpuNumber in this.cpuStates_) { |
| 371 | var cpuState = this.cpuStates_[cpuNumber]; |
| 372 | var cpu = cpuState.cpu; |
| 373 | |
| 374 | for (var i = 0; i < cpu.slices.length; i++) { |
| 375 | var slice = cpu.slices[i]; |
| 376 | slice.start = slice.start + timeShift; |
| 377 | slice.duration = slice.duration; |
| 378 | } |
| 379 | |
| 380 | for (var counterName in cpu.counters) { |
| 381 | var counter = cpu.counters[counterName]; |
| 382 | for (var sI = 0; sI < counter.timestamps.length; sI++) |
| 383 | counter.timestamps[sI] = (counter.timestamps[sI] + timeShift); |
| 384 | } |
| 385 | } |
| 386 | for (var kernelThreadName in this.kernelThreadStates_) { |
| 387 | var kthread = this.kernelThreadStates_[kernelThreadName]; |
| 388 | var thread = kthread.thread; |
| 389 | thread.shiftTimestampsForward(timeShift); |
| 390 | } |
| 391 | return true; |
| 392 | }, |
| 393 | |
| 394 | /** |
| 395 | * Removes any data that has been added to the model because of an error |
| 396 | * detected during the import. |
| 397 | */ |
| 398 | abortImport: function() { |
| 399 | if (this.pushedEventsToThreads) |
| 400 | throw new Error('Cannot abort, have alrady pushedCpuDataToThreads.'); |
| 401 | |
| 402 | for (var cpuNumber in this.cpuStates_) |
| 403 | delete this.model_.cpus[cpuNumber]; |
| 404 | for (var kernelThreadName in this.kernelThreadStates_) { |
| 405 | var kthread = this.kernelThreadStates_[kernelThreadName]; |
| 406 | var thread = kthread.thread; |
| 407 | var process = thread.parent; |
| 408 | delete process.threads[thread.tid]; |
| 409 | delete this.model_.processes[process.pid]; |
| 410 | } |
| 411 | this.model_.importErrors.push( |
| 412 | 'Cannot import kernel trace without a clock sync.'); |
| 413 | }, |
| 414 | |
| 415 | /** |
| 416 | * Creates an instance of each registered linux perf event parser. |
| 417 | * This allows the parsers to register handlers for the events they |
| 418 | * understand. We also register our own special handlers (for the |
| 419 | * timestamp synchronization markers). |
| 420 | */ |
| 421 | createParsers: function() { |
| 422 | // Instantiate the parsers; this will register handlers for known events |
| 423 | var parserConstructors = tracing.LinuxPerfParser.getSubtypeConstructors(); |
| 424 | for (var i = 0; i < parserConstructors.length; ++i) { |
| 425 | var parserConstructor = parserConstructors[i]; |
| 426 | this.parsers_.push(new parserConstructor(this)); |
| 427 | } |
| 428 | |
| 429 | this.registerEventHandler('tracing_mark_write:trace_event_clock_sync', |
| 430 | LinuxPerfImporter.prototype.traceClockSyncEvent.bind(this)); |
| 431 | this.registerEventHandler('tracing_mark_write', |
| 432 | LinuxPerfImporter.prototype.traceMarkingWriteEvent.bind(this)); |
| 433 | // NB: old-style trace markers; deprecated |
| 434 | this.registerEventHandler('0:trace_event_clock_sync', |
| 435 | LinuxPerfImporter.prototype.traceClockSyncEvent.bind(this)); |
| 436 | this.registerEventHandler('0', |
| 437 | LinuxPerfImporter.prototype.traceMarkingWriteEvent.bind(this)); |
| 438 | }, |
| 439 | |
| 440 | /** |
| 441 | * Registers a linux perf event parser used by importCpuData. |
| 442 | */ |
| 443 | registerEventHandler: function(eventName, handler) { |
| 444 | // TODO(sleffler) how to handle conflicts? |
| 445 | this.eventHandlers_[eventName] = handler; |
| 446 | }, |
| 447 | |
| 448 | /** |
| 449 | * Records the fact that a pid has become runnable. This data will |
| 450 | * eventually get used to derive each thread's cpuSlices array. |
| 451 | */ |
| 452 | markPidRunnable: function(ts, pid, comm, prio) { |
| 453 | // TODO(nduca): implement this functionality. |
| 454 | }, |
| 455 | |
| 456 | importError: function(message) { |
| 457 | this.model_.importErrors.push('Line ' + (this.lineNumber + 1) + |
| 458 | ': ' + message); |
| 459 | }, |
| 460 | |
| 461 | /** |
| 462 | * Processes a trace_event_clock_sync event. |
| 463 | */ |
| 464 | traceClockSyncEvent: function(eventName, cpuNumber, pid, ts, eventBase) { |
| 465 | var event = /parent_ts=(\d+\.?\d*)/.exec(eventBase[2]); |
| 466 | if (!event) |
| 467 | return false; |
| 468 | |
| 469 | this.clockSyncRecords_.push({ |
| 470 | perfTS: ts, |
| 471 | parentTS: event[1] * 1000 |
| 472 | }); |
| 473 | return true; |
| 474 | }, |
| 475 | |
| 476 | /** |
| 477 | * Processes a trace_marking_write event. |
| 478 | */ |
| 479 | traceMarkingWriteEvent: function(eventName, cpuNumber, pid, ts, eventBase, |
| 480 | threadName) { |
| 481 | var event = /^\s*(\w+):\s*(.*)$/.exec(eventBase[5]); |
| 482 | if (!event) { |
| 483 | // Check if the event matches events traced by the Android framework |
| 484 | if (eventBase[5].lastIndexOf('B|', 0) === 0 || |
| 485 | eventBase[5] === 'E' || |
| 486 | eventBase[5].lastIndexOf('C|', 0) === 0) |
| 487 | event = [eventBase[5], 'android', eventBase[5]]; |
| 488 | else |
| 489 | return false; |
| 490 | } |
| 491 | |
| 492 | var writeEventName = eventName + ':' + event[1]; |
Jamie Gennis | 6e58f01 | 2012-09-27 17:41:20 -0700 | [diff] [blame^] | 493 | var threadName = (/(.+)-\d+/.exec(eventBase[1]))[1]; |
Jamie Gennis | 2da489c | 2012-09-19 18:06:29 -0700 | [diff] [blame] | 494 | var handler = this.eventHandlers_[writeEventName]; |
| 495 | if (!handler) { |
| 496 | this.importError('Unknown trace_marking_write event ' + writeEventName); |
| 497 | return true; |
| 498 | } |
| 499 | return handler(writeEventName, cpuNumber, pid, ts, event, threadName); |
| 500 | }, |
| 501 | |
| 502 | /** |
| 503 | * Walks the this.events_ structure and creates TimelineCpu objects. |
| 504 | */ |
| 505 | importCpuData: function() { |
| 506 | this.lines_ = this.events_.split('\n'); |
| 507 | |
| 508 | var lineRE = null; |
| 509 | for (this.lineNumber = 0; this.lineNumber < this.lines_.length; |
| 510 | ++this.lineNumber) { |
| 511 | var line = this.lines_[this.lineNumber]; |
| 512 | if (line.length == 0 || /^#/.test(line)) |
| 513 | continue; |
| 514 | if (lineRE == null) { |
| 515 | lineRE = autoDetectLineRE(line); |
| 516 | if (lineRE == null) { |
| 517 | this.importError('Cannot parse line: ' + line); |
| 518 | continue; |
| 519 | } |
| 520 | } |
| 521 | var eventBase = lineRE.exec(line); |
| 522 | if (!eventBase) { |
| 523 | this.importError('Unrecognized line: ' + line); |
| 524 | continue; |
| 525 | } |
| 526 | |
Jamie Gennis | 6e58f01 | 2012-09-27 17:41:20 -0700 | [diff] [blame^] | 527 | var pid = parseInt((/.+-(\d+)/.exec(eventBase[1]))[1]); |
Jamie Gennis | 2da489c | 2012-09-19 18:06:29 -0700 | [diff] [blame] | 528 | var cpuNumber = parseInt(eventBase[2]); |
| 529 | var ts = parseFloat(eventBase[3]) * 1000; |
| 530 | var eventName = eventBase[4]; |
| 531 | |
| 532 | var handler = this.eventHandlers_[eventName]; |
| 533 | if (!handler) { |
| 534 | this.importError('Unknown event ' + eventName + ' (' + line + ')'); |
| 535 | continue; |
| 536 | } |
| 537 | if (!handler(eventName, cpuNumber, pid, ts, eventBase)) |
| 538 | this.importError('Malformed ' + eventName + ' event (' + line + ')'); |
| 539 | } |
| 540 | } |
| 541 | }; |
| 542 | |
| 543 | tracing.TimelineModel.registerImporter(LinuxPerfImporter); |
| 544 | |
| 545 | return { |
| 546 | LinuxPerfImporter: LinuxPerfImporter, |
| 547 | _LinuxPerfImporterTestExports: TestExports |
| 548 | }; |
| 549 | |
| 550 | }); |