1 files changed, 114 insertions, 0 deletions
diff --git a/dom/performance/PerformanceMark.cpp b/dom/performance/PerformanceMark.cpp
new file mode 100644
index 0000000000..97157e6eaa
--- /dev/null
+++ b/dom/performance/PerformanceMark.cpp
@@ -0,0 +1,114 @@
+/* -*- 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 "PerformanceMark.h"
+#include "MainThreadUtils.h"
+#include "nsContentUtils.h"
+#include "Performance.h"
+#include "mozilla/dom/MessagePortBinding.h"
+#include "mozilla/dom/PerformanceBinding.h"
+#include "mozilla/dom/PerformanceMarkBinding.h"
+
+using namespace mozilla::dom;
+
+PerformanceMark::PerformanceMark(nsISupports* aParent, const nsAString& aName,
+                                 DOMHighResTimeStamp aStartTime,
+                                 const JS::Handle<JS::Value>& aDetail)
+    : PerformanceEntry(aParent, aName, u"mark"_ns),
+      mStartTime(aStartTime),
+      mDetail(aDetail) {
+  mozilla::HoldJSObjects(this);
+}
+
+already_AddRefed<PerformanceMark> PerformanceMark::Constructor(
+    const GlobalObject& aGlobal, const nsAString& aMarkName,
+    const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv) {
+  const nsCOMPtr<nsIGlobalObject> global =
+      do_QueryInterface(aGlobal.GetAsSupports());
+  return PerformanceMark::Constructor(aGlobal.Context(), global, aMarkName,
+                                      aMarkOptions, aRv);
+}
+
+already_AddRefed<PerformanceMark> PerformanceMark::Constructor(
+    JSContext* aCx, nsIGlobalObject* aGlobal, const nsAString& aMarkName,
+    const PerformanceMarkOptions& aMarkOptions, ErrorResult& aRv) {
+  RefPtr<Performance> performance = Performance::Get(aCx, aGlobal);
+  if (!performance) {
+    // This is similar to the message that occurs when accessing `performance`
+    // from outside a valid global.
+    aRv.ThrowTypeError(
+        "can't access PerformanceMark constructor, performance is null");
+    return nullptr;
+  }
+
+  if (performance->IsGlobalObjectWindow() &&
+      performance->IsPerformanceTimingAttribute(aMarkName)) {
+    aRv.ThrowSyntaxError("markName cannot be a performance timing attribute");
+    return nullptr;
+  }
+
+  DOMHighResTimeStamp startTime = aMarkOptions.mStartTime.WasPassed()
+                                      ? aMarkOptions.mStartTime.Value()
+                                      : performance->Now();
+  if (startTime < 0) {
+    aRv.ThrowTypeError("Expected startTime >= 0");
+    return nullptr;
+  }
+
+  JS::Rooted<JS::Value> detail(aCx);
+  if (aMarkOptions.mDetail.isNullOrUndefined()) {
+    detail.setNull();
+  } else {
+    StructuredSerializeOptions serializeOptions;
+    JS::Rooted<JS::Value> valueToClone(aCx, aMarkOptions.mDetail);
+    nsContentUtils::StructuredClone(aCx, aGlobal, valueToClone,
+                                    serializeOptions, &detail, aRv);
+    if (aRv.Failed()) {
+      return nullptr;
+    }
+  }
+
+  return do_AddRef(new PerformanceMark(aGlobal, aMarkName, startTime, detail));
+}
+
+PerformanceMark::~PerformanceMark() { mozilla::DropJSObjects(this); }
+
+NS_IMPL_CYCLE_COLLECTION_CLASS(PerformanceMark)
+NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(PerformanceMark,
+                                                PerformanceEntry)
+  tmp->mDetail.setUndefined();
+  mozilla::DropJSObjects(tmp);
+NS_IMPL_CYCLE_COLLECTION_UNLINK_END
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(PerformanceMark,
+                                                  PerformanceEntry)
+NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
+
+NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(PerformanceMark,
+                                               PerformanceEntry)
+  NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mDetail)
+NS_IMPL_CYCLE_COLLECTION_TRACE_END
+
+NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED_0(PerformanceMark,
+                                               PerformanceEntry)
+
+JSObject* PerformanceMark::WrapObject(JSContext* aCx,
+                                      JS::Handle<JSObject*> aGivenProto) {
+  return PerformanceMark_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void PerformanceMark::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 PerformanceMark::SizeOfIncludingThis(
+    mozilla::MallocSizeOf aMallocSizeOf) const {
+  return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
+}