Bug 1791900 - Change cubeb vendoring manifest, swapping out cubeb_tracing.h with something that uses MicroGeckoProfiler.h. r=cubeb-reviewers,kinetik

Differential Revision: https://phabricator.services.mozilla.com/D157879

media/libcubeb/moz.yaml

@@ -34,6 +34,7 @@ vendoring:
     - src/cubeb_kai.c
     - src/cubeb_osx_run_loop.cpp
     - src/cubeb_pulse.c
+    - src/cubeb_tracing.h
     - subprojects
     - tools
   keep:
@@ -44,5 +45,6 @@ vendoring:
     - src/cubeb-jni-instances.h
     - src/cubeb_assert.h
     - src/cubeb_osx_run_loop.c
+    - src/cubeb_tracing.h
     - src/moz.build
 

media/libcubeb/src/cubeb_tracing.h

@@ -1,23 +1,27 @@
-/*
- * Copyright © 2022 Mozilla Foundation
- *
- * This program is made available under an ISC-style license.  See the
- * accompanying file LICENSE for details.
- */
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
 
 #ifndef CUBEB_TRACING_H
 #define CUBEB_TRACING_H
 
-/* Empty header to allow hooking up a frame profiler. */
+#include <MicroGeckoProfiler.h>
+
+#define CUBEB_REGISTER_THREAD(name)               \
+  do {                                            \
+    char stacktop;                                \
+    uprofiler_register_thread(name, &stacktop);   \
+  } while (0)
+
+#define CUBEB_UNREGISTER_THREAD() uprofiler_unregister_thread()
 
-// To be called once on a thread to register for tracing.
-#define CUBEB_REGISTER_THREAD(name)
-// To be called once before a registered threads exits.
-#define CUBEB_UNREGISTER_THREAD()
 // Insert a tracing marker, with a particular name.
 // Phase can be 'x': instant marker, start time but no duration
 //              'b': beginning of a marker with a duration
 //              'e': end of a marker with a duration
-#define CUBEB_TRACE(name, phase)
+#define CUBEB_TRACE(name, phase) \
+  uprofiler_simple_event_marker(name, phase, 0, NULL, NULL, NULL)
 
 #endif // CUBEB_TRACING_H

tools/profiler/moz.build

@@ -151,6 +151,7 @@ include("/ipc/chromium/chromium-config.mozbuild")
 EXPORTS += [
     "public/ChildProfilerController.h",
     "public/GeckoProfiler.h",
+    "public/MicroGeckoProfiler.h",
     "public/ProfilerBindings.h",
     "public/ProfilerControl.h",
     "public/ProfilerParent.h",