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265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_JavascriptTimelineMarker_h_
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#define mozilla_JavascriptTimelineMarker_h_
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#include "TimelineMarker.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/dom/ProfileTimelineMarkerBinding.h"
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#include "mozilla/dom/RootedDictionary.h"
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#include "mozilla/dom/ToJSValue.h"
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namespace mozilla {
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class JavascriptTimelineMarker : public TimelineMarker {
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public:
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// The caller owns |aAsyncCause| here, so we must copy it into a separate
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// string for use later on.
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JavascriptTimelineMarker(const char* aReason, const char16_t* aFunctionName,
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const char16_t* aFileName, uint32_t aLineNumber,
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MarkerTracingType aTracingType,
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JS::Handle<JS::Value> aAsyncStack,
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const char* aAsyncCause)
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: TimelineMarker("Javascript", aTracingType,
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MarkerStackRequest::NO_STACK),
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mCause(NS_ConvertUTF8toUTF16(aReason)),
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mFunctionName(aFunctionName),
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mFileName(aFileName),
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mLineNumber(aLineNumber),
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mAsyncCause(aAsyncCause) {
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JSContext* ctx = nsContentUtils::GetCurrentJSContext();
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if (ctx) {
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mAsyncStack.init(ctx, aAsyncStack);
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}
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}
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virtual void AddDetails(JSContext* aCx,
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dom::ProfileTimelineMarker& aMarker) override {
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TimelineMarker::AddDetails(aCx, aMarker);
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aMarker.mCauseName.Construct(mCause);
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if (!mFunctionName.IsEmpty() || !mFileName.IsEmpty()) {
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dom::RootedDictionary<dom::ProfileTimelineStackFrame> stackFrame(aCx);
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stackFrame.mLine.Construct(mLineNumber);
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stackFrame.mSource.Construct(mFileName);
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stackFrame.mFunctionDisplayName.Construct(mFunctionName);
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if (mAsyncStack.isObject() && !mAsyncCause.IsEmpty()) {
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JS::Rooted<JSObject*> asyncStack(aCx, &mAsyncStack.toObject());
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JS::Rooted<JSObject*> parentFrame(aCx);
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JS::Rooted<JSString*> asyncCause(
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aCx, JS_NewUCStringCopyN(aCx, mAsyncCause.BeginReading(),
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mAsyncCause.Length()));
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if (!asyncCause) {
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JS_ClearPendingException(aCx);
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return;
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}
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if (JS::IsMaybeWrappedSavedFrame(asyncStack) &&
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!JS::CopyAsyncStack(aCx, asyncStack, asyncCause, &parentFrame,
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mozilla::Nothing())) {
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JS_ClearPendingException(aCx);
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} else {
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stackFrame.mAsyncParent = parentFrame;
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}
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}
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JS::Rooted<JS::Value> newStack(aCx);
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if (ToJSValue(aCx, stackFrame, &newStack)) {
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if (newStack.isObject()) {
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aMarker.mStack = &newStack.toObject();
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}
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} else {
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JS_ClearPendingException(aCx);
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}
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}
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}
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private:
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nsString mCause;
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nsString mFunctionName;
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nsString mFileName;
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uint32_t mLineNumber;
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JS::PersistentRooted<JS::Value> mAsyncStack;
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NS_ConvertUTF8toUTF16 mAsyncCause;
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};
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} // namespace mozilla
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#endif // mozilla_JavascriptTimelineMarker_h_
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