1 files changed, 68 insertions, 0 deletions
diff --git a/dom/performance/PerformanceMark.h b/dom/performance/PerformanceMark.h
new file mode 100644
index 0000000000..a67564442c
--- /dev/null
+++ b/dom/performance/PerformanceMark.h
@@ -0,0 +1,68 @@
+/* -*- 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_dom_performancemark_h___
+#define mozilla_dom_performancemark_h___
+
+#include "mozilla/dom/PerformanceEntry.h"
+#include "mozilla/ProfilerMarkers.h"
+
+namespace mozilla::dom {
+
+struct PerformanceMarkOptions;
+
+// http://www.w3.org/TR/user-timing/#performancemark
+class PerformanceMark final : public PerformanceEntry {
+ public:
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(PerformanceMark,
+                                                         PerformanceEntry);
+
+ private:
+  PerformanceMark(nsISupports* aParent, const nsAString& aName,
+                  DOMHighResTimeStamp aStartTime,
+                  const JS::Handle<JS::Value>& aDetail,
+                  DOMHighResTimeStamp aUnclampedStartTime);
+
+ public:
+  static already_AddRefed<PerformanceMark> Constructor(
+      const GlobalObject& aGlobal, const nsAString& aMarkName,
+      const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv);
+
+  static already_AddRefed<PerformanceMark> Constructor(
+      JSContext* aCx, nsIGlobalObject* aGlobal, const nsAString& aMarkName,
+      const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv);
+
+  virtual JSObject* WrapObject(JSContext* aCx,
+                               JS::Handle<JSObject*> aGivenProto) override;
+
+  virtual DOMHighResTimeStamp StartTime() const override { return mStartTime; }
+
+  virtual DOMHighResTimeStamp UnclampedStartTime() const override {
+    MOZ_ASSERT(profiler_thread_is_being_profiled_for_markers(),
+               "This should only be called when the Gecko Profiler is active.");
+    return mUnclampedStartTime;
+  }
+
+  void GetDetail(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval);
+
+  size_t SizeOfIncludingThis(
+      mozilla::MallocSizeOf aMallocSizeOf) const override;
+
+ protected:
+  virtual ~PerformanceMark();
+  DOMHighResTimeStamp mStartTime;
+
+ private:
+  JS::Heap<JS::Value> mDetail;
+  // This is used by the Gecko Profiler only to be able to add precise markers.
+  // It's not exposed to JS
+  DOMHighResTimeStamp mUnclampedStartTime;
+};
+
+}  // namespace mozilla::dom
+
+#endif /* mozilla_dom_performancemark_h___ */