1 files changed, 39 insertions, 0 deletions
diff --git a/docshell/base/timeline/AutoGlobalTimelineMarker.cpp b/docshell/base/timeline/AutoGlobalTimelineMarker.cpp
new file mode 100644
index 0000000000..bf5a19cbab
--- /dev/null
+++ b/docshell/base/timeline/AutoGlobalTimelineMarker.cpp
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 8; 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/. */
+
+#include "AutoGlobalTimelineMarker.h"
+
+#include "TimelineConsumers.h"
+#include "MainThreadUtils.h"
+
+namespace mozilla {
+
+AutoGlobalTimelineMarker::AutoGlobalTimelineMarker(
+    const char* aName, MarkerStackRequest aStackRequest /* = STACK */
+    )
+    : mName(aName), mStackRequest(aStackRequest) {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (TimelineConsumers::IsEmpty()) {
+    return;
+  }
+
+  TimelineConsumers::AddMarkerForAllObservedDocShells(
+      mName, MarkerTracingType::START, mStackRequest);
+}
+
+AutoGlobalTimelineMarker::~AutoGlobalTimelineMarker() {
+  MOZ_ASSERT(NS_IsMainThread());
+
+  if (TimelineConsumers::IsEmpty()) {
+    return;
+  }
+
+  TimelineConsumers::AddMarkerForAllObservedDocShells(
+      mName, MarkerTracingType::END, mStackRequest);
+}
+
+}  // namespace mozilla