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-rw-r--r--docshell/base/timeline/TimelineMarker.h49
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diff --git a/docshell/base/timeline/TimelineMarker.h b/docshell/base/timeline/TimelineMarker.h
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+/* -*- 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/. */
+
+#ifndef mozilla_TimelineMarker_h_
+#define mozilla_TimelineMarker_h_
+
+#include "AbstractTimelineMarker.h"
+#include "js/RootingAPI.h"
+
+namespace mozilla {
+
+// Objects of this type can be added to the timeline if there is an interested
+// consumer. The class can also be subclassed to let a given marker creator
+// provide custom details.
+class TimelineMarker : public AbstractTimelineMarker
+{
+public:
+ TimelineMarker(const char* aName,
+ MarkerTracingType aTracingType,
+ MarkerStackRequest aStackRequest = MarkerStackRequest::STACK);
+
+ TimelineMarker(const char* aName,
+ const TimeStamp& aTime,
+ MarkerTracingType aTracingType,
+ MarkerStackRequest aStackRequest = MarkerStackRequest::STACK);
+
+ virtual void AddDetails(JSContext* aCx, dom::ProfileTimelineMarker& aMarker) override;
+ virtual JSObject* GetStack() override;
+
+protected:
+ void CaptureStack();
+
+private:
+ // While normally it is not a good idea to make a persistent root,
+ // in this case changing nsDocShell to participate in cycle
+ // collection was deemed too invasive, and the markers are only held
+ // here temporarily to boot.
+ JS::PersistentRooted<JSObject*> mStackTrace;
+
+ void CaptureStackIfNecessary(MarkerTracingType aTracingType,
+ MarkerStackRequest aStackRequest);
+};
+
+} // namespace mozilla
+
+#endif /* mozilla_TimelineMarker_h_ */