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-rw-r--r--docshell/base/timeline/JavascriptTimelineMarker.h95
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diff --git a/docshell/base/timeline/JavascriptTimelineMarker.h b/docshell/base/timeline/JavascriptTimelineMarker.h
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+/* -*- 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_JavascriptTimelineMarker_h_
+#define mozilla_JavascriptTimelineMarker_h_
+
+#include "TimelineMarker.h"
+#include "mozilla/dom/ProfileTimelineMarkerBinding.h"
+#include "mozilla/dom/RootedDictionary.h"
+#include "mozilla/dom/ToJSValue.h"
+
+namespace mozilla {
+
+class JavascriptTimelineMarker : public TimelineMarker
+{
+public:
+ // The caller owns |aAsyncCause| here, so we must copy it into a separate
+ // string for use later on.
+ JavascriptTimelineMarker(const char* aReason,
+ const char16_t* aFunctionName,
+ const char16_t* aFileName,
+ uint32_t aLineNumber,
+ MarkerTracingType aTracingType,
+ JS::Handle<JS::Value> aAsyncStack,
+ const char* aAsyncCause)
+ : TimelineMarker("Javascript", aTracingType, MarkerStackRequest::NO_STACK)
+ , mCause(NS_ConvertUTF8toUTF16(aReason))
+ , mFunctionName(aFunctionName)
+ , mFileName(aFileName)
+ , mLineNumber(aLineNumber)
+ , mAsyncCause(aAsyncCause)
+ {
+ JSContext* ctx = nsContentUtils::GetCurrentJSContext();
+ if (ctx) {
+ mAsyncStack.init(ctx, aAsyncStack);
+ }
+ }
+
+ virtual void AddDetails(JSContext* aCx, dom::ProfileTimelineMarker& aMarker) override
+ {
+ TimelineMarker::AddDetails(aCx, aMarker);
+
+ aMarker.mCauseName.Construct(mCause);
+
+ if (!mFunctionName.IsEmpty() || !mFileName.IsEmpty()) {
+ dom::RootedDictionary<dom::ProfileTimelineStackFrame> stackFrame(aCx);
+ stackFrame.mLine.Construct(mLineNumber);
+ stackFrame.mSource.Construct(mFileName);
+ stackFrame.mFunctionDisplayName.Construct(mFunctionName);
+
+ if (mAsyncStack.isObject() && !mAsyncStack.isNullOrUndefined() &&
+ !mAsyncCause.IsEmpty()) {
+ JS::Rooted<JSObject*> asyncStack(aCx, mAsyncStack.toObjectOrNull());
+ JS::Rooted<JSObject*> parentFrame(aCx);
+ JS::Rooted<JSString*> asyncCause(aCx, JS_NewUCStringCopyN(aCx, mAsyncCause.BeginReading(),
+ mAsyncCause.Length()));
+ if (!asyncCause) {
+ JS_ClearPendingException(aCx);
+ return;
+ }
+
+ if (JS::IsSavedFrame(asyncStack) &&
+ !JS::CopyAsyncStack(aCx, asyncStack, asyncCause, &parentFrame, 0)) {
+ JS_ClearPendingException(aCx);
+ } else {
+ stackFrame.mAsyncParent = parentFrame;
+ }
+ }
+
+ JS::Rooted<JS::Value> newStack(aCx);
+ if (ToJSValue(aCx, stackFrame, &newStack)) {
+ if (newStack.isObject()) {
+ aMarker.mStack = &newStack.toObject();
+ }
+ } else {
+ JS_ClearPendingException(aCx);
+ }
+ }
+ }
+
+private:
+ nsString mCause;
+ nsString mFunctionName;
+ nsString mFileName;
+ uint32_t mLineNumber;
+ JS::PersistentRooted<JS::Value> mAsyncStack;
+ NS_ConvertUTF8toUTF16 mAsyncCause;
+};
+
+} // namespace mozilla
+
+#endif // mozilla_JavascriptTimelineMarker_h_