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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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71
docshell/base/timeline/TimelineMarker.cpp Normal file
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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/. */
#include "TimelineMarker.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::RootedObject 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