1 files changed, 66 insertions, 0 deletions
diff --git a/docshell/base/timeline/TimelineMarker.cpp b/docshell/base/timeline/TimelineMarker.cpp
new file mode 100644
index 0000000000..9f09ebf0a5
--- /dev/null
+++ b/docshell/base/timeline/TimelineMarker.cpp
@@ -0,0 +1,66 @@
+/* -*- 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 "TimelineMarker.h"
+
+#include "jsapi.h"
+#include "js/Exception.h"
+#include "mozilla/dom/ProfileTimelineMarkerBinding.h"
+#include "nsContentUtils.h"
+
+namespace mozilla {
+
+TimelineMarker::TimelineMarker(const char* aName,
+                               MarkerTracingType aTracingType,
+                               MarkerStackRequest aStackRequest)
+    : AbstractTimelineMarker(aName, aTracingType) {
+  CaptureStackIfNecessary(aTracingType, aStackRequest);
+}
+
+TimelineMarker::TimelineMarker(const char* aName, const TimeStamp& aTime,
+                               MarkerTracingType aTracingType,
+                               MarkerStackRequest aStackRequest)
+    : AbstractTimelineMarker(aName, aTime, aTracingType) {
+  CaptureStackIfNecessary(aTracingType, aStackRequest);
+}
+
+void TimelineMarker::AddDetails(JSContext* aCx,
+                                dom::ProfileTimelineMarker& aMarker) {
+  if (GetTracingType() == MarkerTracingType::START) {
+    aMarker.mProcessType.Construct(GetProcessType());
+    aMarker.mIsOffMainThread.Construct(IsOffMainThread());
+  }
+}
+
+JSObject* TimelineMarker::GetStack() {
+  if (mStackTrace.initialized()) {
+    return mStackTrace;
+  }
+  return nullptr;
+}
+
+void TimelineMarker::CaptureStack() {
+  JSContext* ctx = nsContentUtils::GetCurrentJSContext();
+  if (ctx) {
+    JS::Rooted<JSObject*> stack(ctx);
+    if (JS::CaptureCurrentStack(ctx, &stack)) {
+      mStackTrace.init(ctx, stack.get());
+    } else {
+      JS_ClearPendingException(ctx);
+    }
+  }
+}
+
+void TimelineMarker::CaptureStackIfNecessary(MarkerTracingType aTracingType,
+                                             MarkerStackRequest aStackRequest) {
+  if ((aTracingType == MarkerTracingType::START ||
+       aTracingType == MarkerTracingType::TIMESTAMP) &&
+      aStackRequest != MarkerStackRequest::NO_STACK) {
+    CaptureStack();
+  }
+}
+
+}  // namespace mozilla