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9120910ea9
I botched another patch in this series because I was confused about when zero meant "no limit" and when it actually just meant zero, so I figured I'd fix this. MozReview-Commit-ID: 5vgzKGSKL8F --HG-- extra : rebase_source : dc57c22b08455a1867eeaa139b3045d2ae181cef extra : histedit_source : e82898f74e8568bbbd10f7589427f5fbbcfe24fa
99 lines
3.3 KiB
C++
99 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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{
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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,
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const char16_t* aFunctionName,
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const char16_t* aFileName,
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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, 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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{
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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, dom::ProfileTimelineMarker& aMarker) override
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{
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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() && !mAsyncStack.isNullOrUndefined() &&
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!mAsyncCause.IsEmpty()) {
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JS::Rooted<JSObject*> asyncStack(aCx, mAsyncStack.toObjectOrNull());
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JS::Rooted<JSObject*> parentFrame(aCx);
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JS::Rooted<JSString*> asyncCause(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::IsSavedFrame(asyncStack) &&
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!JS::CopyAsyncStack(aCx, asyncStack, asyncCause, &parentFrame, 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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