1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const { XPCOMUtils } = ChromeUtils.importESModule(
"resource://gre/modules/XPCOMUtils.sys.mjs"
);
const gDashboard = Cc["@mozilla.org/network/dashboard;1"].getService(
Ci.nsIDashboard
);
const gDirServ = Cc["@mozilla.org/file/directory_service;1"].getService(
Ci.nsIDirectoryServiceProvider
);
const { ProfilerMenuButton } = ChromeUtils.importESModule(
"resource://devtools/client/performance-new/popup/menu-button.sys.mjs"
);
const { CustomizableUI } = ChromeUtils.importESModule(
"resource:///modules/CustomizableUI.sys.mjs"
);
ChromeUtils.defineLazyGetter(this, "ProfilerPopupBackground", function () {
return ChromeUtils.importESModule(
"resource://devtools/client/performance-new/shared/background.sys.mjs"
);
});
const $ = document.querySelector.bind(document);
const $$ = document.querySelectorAll.bind(document);
function fileEnvVarPresent() {
return Services.env.get("MOZ_LOG_FILE") || Services.env.get("NSPR_LOG_FILE");
}
function moduleEnvVarPresent() {
return Services.env.get("MOZ_LOG") || Services.env.get("NSPR_LOG");
}
/**
* All the information associated with a logging presets:
* - `modules` is the list of log modules and option, the same that would have
* been set as a MOZ_LOG environment variable
* - l10nIds.label and l10nIds.description are the Ids of the strings that
* appear in the dropdown selector, and a one-liner describing the purpose of
* a particular logging preset
* - profilerPreset is the name of a Firefox Profiler preset [1]. In general,
* the profiler preset will have the correct set of threads for a particular
* logging preset, so that all logging statements are recorded in the profile
* as markers.
*
* [1]: The keys of the `presets` object defined in
* https://searchfox.org/mozilla-central/source/devtools/client/performance-new/shared/background.sys.mjs
*/
const gOsSpecificLoggingPresets = (() => {
// Microsoft Windows
if (navigator.platform.startsWith("Win")) {
return {
windows: {
modules:
"timestamp,sync,Widget:5,BaseWidget:5,WindowsEvent:4,TaskbarConcealer:5,FileDialog:5",
l10nIds: {
label: "about-logging-preset-windows-label",
description: "about-logging-preset-windows-description",
},
},
};
}
return {};
})();
const gLoggingPresets = {
networking: {
modules:
"timestamp,sync,nsHttp:5,cache2:5,nsSocketTransport:5,nsHostResolver:5,EarlyHint:5",
l10nIds: {
label: "about-logging-preset-networking-label",
description: "about-logging-preset-networking-description",
},
profilerPreset: "networking",
},
cookie: {
modules: "timestamp,sync,nsHttp:5,cache2:5,cookie:5",
l10nIds: {
label: "about-logging-preset-networking-cookie-label",
description: "about-logging-preset-networking-cookie-description",
},
},
websocket: {
modules:
"timestamp,sync,nsHttp:5,nsWebSocket:5,nsSocketTransport:5,nsHostResolver:5",
l10nIds: {
label: "about-logging-preset-networking-websocket-label",
description: "about-logging-preset-networking-websocket-description",
},
},
http3: {
modules:
"timestamp,sync,nsHttp:5,nsSocketTransport:5,nsHostResolver:5,neqo_http3::*:5,neqo_transport::*:5",
l10nIds: {
label: "about-logging-preset-networking-http3-label",
description: "about-logging-preset-networking-http3-description",
},
},
"http3-upload-speed": {
modules: "timestamp,neqo_transport::*:3",
l10nIds: {
label: "about-logging-preset-networking-http3-upload-speed-label",
description:
"about-logging-preset-networking-http3-upload-speed-description",
},
},
"media-playback": {
modules:
"HTMLMediaElement:4,HTMLMediaElementEvents:4,cubeb:5,PlatformDecoderModule:5,AudioSink:5,AudioSinkWrapper:5,MediaDecoderStateMachine:4,MediaDecoder:4,MediaFormatReader:5,GMP:5",
l10nIds: {
label: "about-logging-preset-media-playback-label",
description: "about-logging-preset-media-playback-description",
},
profilerPreset: "media",
},
webrtc: {
modules:
"jsep:5,sdp:5,signaling:5,mtransport:5,RTCRtpReceiver:5,RTCRtpSender:5,RTCDMTFSender:5,VideoFrameConverter:5,WebrtcTCPSocket:5,CamerasChild:5,CamerasParent:5,VideoEngine:5,ShmemPool:5,TabShare:5,MediaChild:5,MediaParent:5,MediaManager:5,MediaTrackGraph:5,cubeb:5,MediaStream:5,MediaStreamTrack:5,DriftCompensator:5,ForwardInputTrack:5,MediaRecorder:5,MediaEncoder:5,TrackEncoder:5,VP8TrackEncoder:5,Muxer:5,GetUserMedia:5,MediaPipeline:5,PeerConnectionImpl:5,WebAudioAPI:5,webrtc_trace:5,RTCRtpTransceiver:5,ForwardedInputTrack:5,HTMLMediaElement:5,HTMLMediaElementEvents:5",
l10nIds: {
label: "about-logging-preset-webrtc-label",
description: "about-logging-preset-webrtc-description",
},
profilerPreset: "media",
},
webgpu: {
modules:
"wgpu_core::*:5,wgpu_hal::*:5,wgpu_types::*:5,naga::*:5,wgpu_bindings::*:5,WebGPU:5",
l10nIds: {
label: "about-logging-preset-webgpu-label",
description: "about-logging-preset-webgpu-description",
},
},
gfx: {
modules:
"webrender::*:5,webrender_bindings::*:5,webrender_types::*:5,gfx2d:5,WebRenderBridgeParent:5,DcompSurface:5,apz.displayport:5,layout:5,dl.content:5,dl.parent:5,nsRefreshDriver:5,fontlist:5,fontinit:5,textrun:5,textrunui:5,textperf:5",
l10nIds: {
label: "about-logging-preset-gfx-label",
description: "about-logging-preset-gfx-description",
},
// The graphics profiler preset enables the threads we want but loses the screenshots.
// We could add an extra preset for that if we miss it.
profilerPreset: "graphics",
},
...gOsSpecificLoggingPresets,
custom: {
modules: "",
l10nIds: {
label: "about-logging-preset-custom-label",
description: "about-logging-preset-custom-description",
},
},
};
const gLoggingSettings = {
// Possible values: "profiler" and "file".
loggingOutputType: "profiler",
running: false,
// If non-null, the profiler preset to use. If null, the preset selected in
// the dropdown is going to be used. It is also possible to use a "custom"
// preset and an explicit list of modules.
loggingPreset: null,
// If non-null, the profiler preset to use. If a logging preset is being used,
// and this is null, the profiler preset associated to the logging preset is
// going to be used. Otherwise, a generic profiler preset is going to be used
// ("firefox-platform").
profilerPreset: null,
// If non-null, the threads that will be recorded by the Firefox Profiler. If
// null, the threads from the profiler presets are going to be used.
profilerThreads: null,
// If non-null, stack traces will be recorded for MOZ_LOG profiler markers.
// This is set only when coming from the URL, not when the user changes the UI.
profilerStacks: null,
};
// When the profiler has been started, this holds the promise the
// Services.profiler.StartProfiler returns, to ensure the profiler has
// effectively started.
let gProfilerPromise = null;
// Used in tests
function presets() {
return gLoggingPresets;
}
// Used in tests
function settings() {
return gLoggingSettings;
}
// Used in tests
function profilerPromise() {
return gProfilerPromise;
}
function populatePresets() {
let dropdown = $("#logging-preset-dropdown");
for (let presetName in gLoggingPresets) {
let preset = gLoggingPresets[presetName];
let option = document.createElement("option");
document.l10n.setAttributes(option, preset.l10nIds.label);
option.value = presetName;
dropdown.appendChild(option);
if (option.value === gLoggingSettings.loggingPreset) {
option.setAttribute("selected", true);
}
}
function setPresetAndDescription(preset) {
document.l10n.setAttributes(
$("#logging-preset-description"),
gLoggingPresets[preset].l10nIds.description
);
gLoggingSettings.loggingPreset = preset;
}
dropdown.onchange = function () {
// When switching to custom, leave the existing module list, to allow
// editing.
if (dropdown.value != "custom") {
$("#log-modules").value = gLoggingPresets[dropdown.value].modules;
}
setPresetAndDescription(dropdown.value);
Services.prefs.setCharPref("logging.config.preset", dropdown.value);
};
$("#log-modules").value = gLoggingPresets[dropdown.value].modules;
setPresetAndDescription(dropdown.value);
// When changing the list switch to custom.
$("#log-modules").oninput = () => {
dropdown.value = "custom";
};
}
function updateLoggingOutputType(profilerOutputType) {
gLoggingSettings.loggingOutputType = profilerOutputType;
Services.prefs.setCharPref("logging.config.output_type", profilerOutputType);
$(`input[type=radio][value=${profilerOutputType}]`).checked = true;
switch (profilerOutputType) {
case "profiler":
if (!gLoggingSettings.profilerStacks) {
// If this value is set from the URL, do not allow to change it.
$("#with-profiler-stacks-checkbox").disabled = false;
}
// hide options related to file output for clarity
$("#log-file-configuration").hidden = true;
break;
case "file":
$("#with-profiler-stacks-checkbox").disabled = true;
$("#log-file-configuration").hidden = false;
$("#no-log-file").hidden = !!$("#current-log-file").innerText.length;
break;
}
}
function displayErrorMessage(error) {
var err = $("#error");
err.hidden = false;
var errorDescription = $("#error-description");
document.l10n.setAttributes(errorDescription, error.l10nId, {
k: error.key,
v: error.value,
});
}
class ParseError extends Error {
constructor(l10nId, key, value) {
super(name);
this.l10nId = l10nId;
this.key = key;
this.value = value;
}
name = "ParseError";
l10nId;
key;
value;
}
function parseURL() {
let options = new URL(document.location.href).searchParams;
if (!options) {
return;
}
let modulesOverriden = null,
outputTypeOverriden = null,
loggingPresetOverriden = null,
threadsOverriden = null,
profilerPresetOverriden = null,
profilerStacksOverriden = null;
try {
for (let [k, v] of options) {
switch (k) {
case "modules":
case "module":
modulesOverriden = v;
break;
case "output":
case "output-type":
if (v !== "profiler" && v !== "file") {
throw new ParseError("about-logging-invalid-output", k, v);
}
outputTypeOverriden = v;
break;
case "preset":
case "logging-preset":
if (!Object.keys(gLoggingPresets).includes(v)) {
throw new ParseError("about-logging-unknown-logging-preset", k, v);
}
loggingPresetOverriden = v;
break;
case "threads":
case "thread":
threadsOverriden = v;
break;
case "profiler-preset":
if (!Object.keys(ProfilerPopupBackground.presets).includes(v)) {
throw new Error(["about-logging-unknown-profiler-preset", k, v]);
}
profilerPresetOverriden = v;
break;
case "profilerstacks":
profilerStacksOverriden = true;
break;
default:
throw new ParseError("about-logging-unknown-option", k, v);
}
}
} catch (e) {
displayErrorMessage(e);
return;
}
// Detect combinations that don't make sense
if (
(profilerPresetOverriden || threadsOverriden) &&
outputTypeOverriden == "file"
) {
displayErrorMessage(
new ParseError("about-logging-file-and-profiler-override")
);
return;
}
// Configuration is deemed at least somewhat valid, override each setting in
// turn
let someElementsDisabled = false;
if (modulesOverriden || loggingPresetOverriden) {
// Don't allow changing those if set by the URL
let logModules = $("#log-modules");
var dropdown = $("#logging-preset-dropdown");
if (loggingPresetOverriden) {
dropdown.value = loggingPresetOverriden;
dropdown.onchange();
}
if (modulesOverriden) {
logModules.value = modulesOverriden;
dropdown.value = "custom";
dropdown.onchange();
dropdown.disabled = true;
someElementsDisabled = true;
}
logModules.disabled = true;
$("#set-log-modules-button").disabled = true;
$("#logging-preset-dropdown").disabled = true;
someElementsDisabled = true;
updateLogModules();
}
if (outputTypeOverriden) {
$$("input[type=radio]").forEach(e => (e.disabled = true));
someElementsDisabled = true;
updateLoggingOutputType(outputTypeOverriden);
}
if (profilerStacksOverriden) {
const checkbox = $("#with-profiler-stacks-checkbox");
checkbox.disabled = true;
someElementsDisabled = true;
Services.prefs.setBoolPref("logging.config.profilerstacks", true);
gLoggingSettings.profilerStacks = true;
}
if (loggingPresetOverriden) {
gLoggingSettings.loggingPreset = loggingPresetOverriden;
}
if (profilerPresetOverriden) {
gLoggingSettings.profilerPreset = profilerPresetOverriden;
}
if (threadsOverriden) {
gLoggingSettings.profilerThreads = threadsOverriden;
}
$("#some-elements-unavailable").hidden = !someElementsDisabled;
}
let gInited = false;
function init() {
if (gInited) {
return;
}
gInited = true;
gDashboard.enableLogging = true;
populatePresets();
parseURL();
$("#log-file-configuration").addEventListener("submit", e => {
e.preventDefault();
setLogFile();
});
$("#log-modules-form").addEventListener("submit", e => {
e.preventDefault();
setLogModules();
});
let toggleLoggingButton = $("#toggle-logging-button");
toggleLoggingButton.addEventListener("click", startStopLogging);
$$("input[type=radio]").forEach(radio => {
radio.onchange = e => {
updateLoggingOutputType(e.target.value);
};
});
$("#with-profiler-stacks-checkbox").addEventListener("change", e => {
Services.prefs.setBoolPref(
"logging.config.profilerstacks",
e.target.checked
);
updateLogModules();
});
let loggingOutputType = Services.prefs.getCharPref(
"logging.config.output_type",
"profiler"
);
if (loggingOutputType.length) {
updateLoggingOutputType(loggingOutputType);
}
$("#with-profiler-stacks-checkbox").checked = Services.prefs.getBoolPref(
"logging.config.profilerstacks",
false
);
try {
let loggingPreset = Services.prefs.getCharPref("logging.config.preset");
gLoggingSettings.loggingPreset = loggingPreset;
} catch {}
try {
let running = Services.prefs.getBoolPref("logging.config.running");
gLoggingSettings.running = running;
document.l10n.setAttributes(
$("#toggle-logging-button"),
`about-logging-${gLoggingSettings.running ? "stop" : "start"}-logging`
);
} catch {}
try {
let file = gDirServ.getFile("TmpD", {});
file.append("log.txt");
$("#log-file").value = file.path;
} catch (e) {
console.error(e);
}
// Update the value of the log file.
updateLogFile();
// Update the active log modules
updateLogModules();
// If we can't set the file and the modules at runtime,
// the start and stop buttons wouldn't really do anything.
if (
($("#set-log-file-button").disabled ||
$("#set-log-modules-button").disabled) &&
moduleEnvVarPresent()
) {
$("#buttons-disabled").hidden = false;
toggleLoggingButton.disabled = true;
}
}
function updateLogFile(file) {
let logPath = "";
// Try to get the environment variable for the log file
logPath =
Services.env.get("MOZ_LOG_FILE") || Services.env.get("NSPR_LOG_FILE");
let currentLogFile = $("#current-log-file");
let setLogFileButton = $("#set-log-file-button");
// If the log file was set from an env var, we disable the ability to set it
// at runtime.
if (logPath.length) {
currentLogFile.innerText = logPath;
setLogFileButton.disabled = true;
} else if (gDashboard.getLogPath() != ".moz_log") {
// There may be a value set by a pref.
currentLogFile.innerText = gDashboard.getLogPath();
} else if (file !== undefined) {
currentLogFile.innerText = file;
} else {
try {
let file = gDirServ.getFile("TmpD", {});
file.append("log.txt");
$("#log-file").value = file.path;
} catch (e) {
console.error(e);
}
// Fall back to the temp dir
currentLogFile.innerText = $("#log-file").value;
}
let openLogFileButton = $("#open-log-file-button");
openLogFileButton.disabled = true;
if (currentLogFile.innerText.length) {
let file = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile);
file.initWithPath(currentLogFile.innerText);
if (file.exists()) {
openLogFileButton.disabled = false;
openLogFileButton.onclick = function () {
file.reveal();
};
}
}
$("#no-log-file").hidden = !!currentLogFile.innerText.length;
$("#current-log-file").hidden = !currentLogFile.innerText.length;
}
function updateLogModules() {
// Try to get the environment variable for the log file
let logModules =
Services.env.get("MOZ_LOG") ||
Services.env.get("MOZ_LOG_MODULES") ||
Services.env.get("NSPR_LOG_MODULES");
let currentLogModules = $("#current-log-modules");
let setLogModulesButton = $("#set-log-modules-button");
if (logModules.length) {
currentLogModules.innerText = logModules;
// If the log modules are set by an environment variable at startup, do not
// allow changing them throught a pref. It would be difficult to figure out
// which ones are enabled and which ones are not. The user probably knows
// what he they are doing.
setLogModulesButton.disabled = true;
} else {
let activeLogModules = [];
let children = Services.prefs.getBranch("logging.").getChildList("");
for (let pref of children) {
if (pref.startsWith("config.")) {
continue;
}
try {
let value = Services.prefs.getIntPref(`logging.${pref}`);
activeLogModules.push(`${pref}:${value}`);
} catch (e) {
console.error(e);
}
}
if (activeLogModules.length) {
// Add some options only if some modules are present.
if (Services.prefs.getBoolPref("logging.config.add_timestamp", false)) {
activeLogModules.push("timestamp");
}
if (Services.prefs.getBoolPref("logging.config.sync", false)) {
activeLogModules.push("sync");
}
if (Services.prefs.getBoolPref("logging.config.profilerstacks", false)) {
activeLogModules.push("profilerstacks");
}
}
if (activeLogModules.length !== 0) {
currentLogModules.innerText = activeLogModules.join(",");
currentLogModules.hidden = false;
$("#no-log-modules").hidden = true;
} else {
currentLogModules.innerText = "";
currentLogModules.hidden = true;
$("#no-log-modules").hidden = false;
}
}
}
function setLogFile() {
let setLogButton = $("#set-log-file-button");
if (setLogButton.disabled) {
// There's no point trying since it wouldn't work anyway.
return;
}
let logFile = $("#log-file").value.trim();
Services.prefs.setCharPref("logging.config.LOG_FILE", logFile);
updateLogFile(logFile);
}
function clearLogModules() {
// Turn off all the modules.
let children = Services.prefs.getBranch("logging.").getChildList("");
for (let pref of children) {
if (!pref.startsWith("config.")) {
Services.prefs.clearUserPref(`logging.${pref}`);
}
}
Services.prefs.clearUserPref("logging.config.add_timestamp");
Services.prefs.clearUserPref("logging.config.sync");
updateLogModules();
}
function setLogModules() {
if (moduleEnvVarPresent()) {
// The modules were set via env var, so we shouldn't try to change them.
return;
}
let modules = $("#log-modules").value.trim();
// Clear previously set log modules.
clearLogModules();
if (modules.length !== 0) {
let logModules = modules.split(",");
for (let module of logModules) {
if (module == "timestamp") {
Services.prefs.setBoolPref("logging.config.add_timestamp", true);
} else if (module == "rotate") {
// XXX: rotate is not yet supported.
} else if (module == "append") {
// XXX: append is not yet supported.
} else if (module == "sync") {
Services.prefs.setBoolPref("logging.config.sync", true);
} else if (module == "profilerstacks") {
Services.prefs.setBoolPref("logging.config.profilerstacks", true);
} else {
let lastColon = module.lastIndexOf(":");
let key = module.slice(0, lastColon);
let value = parseInt(module.slice(lastColon + 1), 10);
Services.prefs.setIntPref(`logging.${key}`, value);
}
}
}
updateLogModules();
}
function isLogging() {
try {
return Services.prefs.getBoolPref("logging.config.running");
} catch {
return false;
}
}
function startStopLogging() {
if (isLogging()) {
document.l10n.setAttributes(
$("#toggle-logging-button"),
"about-logging-start-logging"
);
stopLogging();
} else {
document.l10n.setAttributes(
$("#toggle-logging-button"),
"about-logging-stop-logging"
);
startLogging();
}
}
function startLogging() {
setLogModules();
if (gLoggingSettings.loggingOutputType === "profiler") {
const pageContext = "aboutlogging";
const supportedFeatures = Services.profiler.GetFeatures();
if (gLoggingSettings.loggingPreset != "custom") {
// Change the preset before starting the profiler, so that the
// underlying profiler code picks up the right configuration.
const profilerPreset =
gLoggingPresets[gLoggingSettings.loggingPreset].profilerPreset;
ProfilerPopupBackground.changePreset(
"aboutlogging",
profilerPreset,
supportedFeatures
);
} else {
// a baseline set of threads, and possibly others, overriden by the URL
ProfilerPopupBackground.changePreset(
"aboutlogging",
"firefox-platform",
supportedFeatures
);
}
let { entries, interval, features, threads, duration } =
ProfilerPopupBackground.getRecordingSettings(
pageContext,
Services.profiler.GetFeatures()
);
if (gLoggingSettings.profilerThreads) {
threads.push(...gLoggingSettings.profilerThreads.split(","));
// Small hack: if cubeb is being logged, it's almost always necessary (and
// never harmful) to enable audio callback tracing, otherwise, no log
// statements will be recorded from real-time threads.
if (gLoggingSettings.profilerThreads.includes("cubeb")) {
features.push("audiocallbacktracing");
}
}
const win = Services.wm.getMostRecentWindow("navigator:browser");
const windowid = win?.gBrowser?.selectedBrowser?.browsingContext?.browserId;
// Force displaying the profiler button in the navbar if not preset, so
// that there is a visual indication profiling is in progress.
if (!ProfilerMenuButton.isInNavbar()) {
// Ensure the widget is enabled.
Services.prefs.setBoolPref(
"devtools.performance.popup.feature-flag",
true
);
// Enable the profiler menu button.
ProfilerMenuButton.addToNavbar();
// Dispatch the change event manually, so that the shortcuts will also be
// added.
CustomizableUI.dispatchToolboxEvent("customizationchange");
}
gProfilerPromise = Services.profiler.StartProfiler(
entries,
interval,
features,
threads,
windowid,
duration
);
} else {
setLogFile();
}
Services.prefs.setBoolPref("logging.config.running", true);
}
async function stopLogging() {
if (gLoggingSettings.loggingOutputType === "profiler") {
await ProfilerPopupBackground.captureProfile("aboutlogging");
} else {
Services.prefs.clearUserPref("logging.config.LOG_FILE");
updateLogFile();
}
Services.prefs.setBoolPref("logging.config.running", false);
clearLogModules();
}
// We use the pageshow event instead of onload. This is needed because sometimes
// the page is loaded via session-restore/bfcache. In such cases we need to call
// init() to keep the page behaviour consistent with the ticked checkboxes.
// Mostly the issue is with the autorefresh checkbox.
window.addEventListener("pageshow", function () {
init();
});
|