1 files changed, 62 insertions, 0 deletions
diff --git a/dom/performance/PerformanceMeasure.cpp b/dom/performance/PerformanceMeasure.cpp
new file mode 100644
index 0000000000..d276162b42
--- /dev/null
+++ b/dom/performance/PerformanceMeasure.cpp
@@ -0,0 +1,62 @@
+/* -*- 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 "PerformanceMeasure.h"
+#include "MainThreadUtils.h"
+#include "mozilla/dom/PerformanceMeasureBinding.h"
+
+using namespace mozilla::dom;
+
+PerformanceMeasure::PerformanceMeasure(nsISupports* aParent,
+                                       const nsAString& aName,
+                                       DOMHighResTimeStamp aStartTime,
+                                       DOMHighResTimeStamp aEndTime,
+                                       const JS::Handle<JS::Value>& aDetail)
+    : PerformanceEntry(aParent, aName, u"measure"_ns),
+      mStartTime(aStartTime),
+      mDuration(aEndTime - aStartTime),
+      mDetail(aDetail) {
+  mozilla::HoldJSObjects(this);
+}
+
+PerformanceMeasure::~PerformanceMeasure() { mozilla::DropJSObjects(this); }
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(PerformanceMeasure)
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(PerformanceMeasure,
+                                                PerformanceEntry)
+  tmp->mDetail.setUndefined();
+  mozilla::DropJSObjects(tmp);
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PerformanceMeasure,
+                                                  PerformanceEntry)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceMeasure,
+                                               PerformanceEntry)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDetail)
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(PerformanceMeasure,
+                                               PerformanceEntry)
+
+JSObject* PerformanceMeasure::WrapObject(JSContext* aCx,
+                                         JS::Handle<JSObject*> aGivenProto) {
+  return PerformanceMeasure_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void PerformanceMeasure::GetDetail(JSContext* aCx,
+                                   JS::MutableHandle<JS::Value> aRetval) {
+  // Return a copy so that this method always returns the value it is set to
+  // (i.e. it'll return the same value even if the caller assigns to it). Note
+  // that if detail is an object, its contents can be mutated and this is
+  // expected.
+  aRetval.set(mDetail);
+}
+
+size_t PerformanceMeasure::SizeOfIncludingThis(
+    mozilla::MallocSizeOf aMallocSizeOf) const {
+  return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
+}