1 files changed, 104 insertions, 0 deletions
diff --git a/dom/performance/PerformanceEntry.h b/dom/performance/PerformanceEntry.h
new file mode 100644
index 0000000000..37a13105f9
--- /dev/null
+++ b/dom/performance/PerformanceEntry.h
@@ -0,0 +1,104 @@
+/* -*- 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_PerformanceEntry_h___
+#define mozilla_dom_PerformanceEntry_h___
+
+#include "nsDOMNavigationTiming.h"
+#include "nsString.h"
+#include "nsWrapperCache.h"
+#include "nsAtom.h"
+#include "mozilla/dom/PerformanceObserverBinding.h"
+
+class nsISupports;
+
+namespace mozilla::dom {
+class PerformanceResourceTiming;
+
+// http://www.w3.org/TR/performance-timeline/#performanceentry
+class PerformanceEntry : public nsISupports, public nsWrapperCache {
+ protected:
+  virtual ~PerformanceEntry();
+
+ public:
+  PerformanceEntry(nsISupports* aParent, const nsAString& aName,
+                   const nsAString& aEntryType);
+
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(PerformanceEntry)
+
+  nsISupports* GetParentObject() const { return mParent; }
+
+  void GetName(nsAString& aName) const {
+    if (mName) {
+      mName->ToString(aName);
+    }
+  }
+
+  const nsAtom* GetName() const { return mName; }
+
+  void GetEntryType(nsAString& aEntryType) const {
+    if (mEntryType) {
+      mEntryType->ToString(aEntryType);
+    }
+  }
+
+  const nsAtom* GetEntryType() const { return mEntryType; }
+
+  void SetEntryType(const nsAString& aEntryType) {
+    mEntryType = NS_Atomize(aEntryType);
+  }
+
+  virtual DOMHighResTimeStamp StartTime() const { return 0; }
+
+  // This is used by the Gecko Profiler only for adding precise markers.
+  // It's not exposed to JS.
+  virtual DOMHighResTimeStamp UnclampedStartTime() const {
+    MOZ_ASSERT(false, "UnclampedStartTime should not be called on this class.");
+    return 0;
+  }
+
+  virtual DOMHighResTimeStamp Duration() const { return 0; }
+
+  virtual const PerformanceResourceTiming* ToResourceTiming() const {
+    return nullptr;
+  }
+
+  virtual bool ShouldAddEntryToObserverBuffer(
+      PerformanceObserverInit& aOption) const;
+
+  virtual void BufferEntryIfNeeded() {}
+
+  virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+ protected:
+  virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+ private:
+  nsCOMPtr<nsISupports> mParent;
+  RefPtr<nsAtom> mName;
+  RefPtr<nsAtom> mEntryType;
+};
+
+// Helper classes
+class MOZ_STACK_CLASS PerformanceEntryComparator final {
+ public:
+  bool Equals(const PerformanceEntry* aElem1,
+              const PerformanceEntry* aElem2) const {
+    MOZ_ASSERT(aElem1 && aElem2, "Trying to compare null performance entries");
+    return aElem1->StartTime() == aElem2->StartTime();
+  }
+
+  bool LessThan(const PerformanceEntry* aElem1,
+                const PerformanceEntry* aElem2) const {
+    MOZ_ASSERT(aElem1 && aElem2, "Trying to compare null performance entries");
+    return aElem1->StartTime() < aElem2->StartTime();
+  }
+};
+
+}  // namespace mozilla::dom
+
+#endif /* mozilla_dom_PerformanceEntry_h___ */