From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- dom/performance/PerformancePaintTiming.h | 50 ++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 dom/performance/PerformancePaintTiming.h (limited to 'dom/performance/PerformancePaintTiming.h') diff --git a/dom/performance/PerformancePaintTiming.h b/dom/performance/PerformancePaintTiming.h new file mode 100644 index 0000000000..395866dbc2 --- /dev/null +++ b/dom/performance/PerformancePaintTiming.h @@ -0,0 +1,50 @@ +/* -*- 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_dom_PerformancePaintTiming_h___ +#define mozilla_dom_PerformancePaintTiming_h___ + +#include "mozilla/dom/PerformanceEntry.h" +#include "mozilla/dom/PerformancePaintTimingBinding.h" + +namespace mozilla::dom { + +class Performance; + +// https://w3c.github.io/paint-timing/#sec-PerformancePaintTiming +// Unlike timeToContentfulPaint, this timing is generated during +// displaylist building, when a frame is contentful, we collect +// the timestamp. Whereas, timeToContentfulPaint uses a compositor-side +// timestamp. +class PerformancePaintTiming final : public PerformanceEntry { + public: + PerformancePaintTiming(Performance* aPerformance, const nsAString& aName, + const TimeStamp& aStartTime); + + NS_DECL_ISUPPORTS_INHERITED + + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(PerformancePaintTiming, + PerformanceEntry) + + JSObject* WrapObject(JSContext* aCx, + JS::Handle aGivenProto) override; + + DOMHighResTimeStamp StartTime() const override; + + size_t SizeOfIncludingThis( + mozilla::MallocSizeOf aMallocSizeOf) const override; + + private: + ~PerformancePaintTiming(); + RefPtr mPerformance; + + const TimeStamp mRawStartTime; + mutable Maybe mCachedStartTime; +}; + +} // namespace mozilla::dom + +#endif /* mozilla_dom_PerformanacePaintTiming_h___ */ -- cgit v1.2.3