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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_LayerTimelineMarker_h_
#define mozilla_LayerTimelineMarker_h_
#include "TimelineMarker.h"
#include "mozilla/dom/ProfileTimelineMarkerBinding.h"
#include "mozilla/mozalloc_oom.h"
#include "nsRegion.h"
namespace mozilla {
class LayerTimelineMarker : public TimelineMarker {
public:
explicit LayerTimelineMarker(const nsIntRegion& aRegion)
: TimelineMarker("Layer", MarkerTracingType::HELPER_EVENT),
mRegion(aRegion) {}
void AddLayerRectangles(
dom::Sequence<dom::ProfileTimelineLayerRect>& aRectangles) {
for (auto iter = mRegion.RectIter(); !iter.Done(); iter.Next()) {
const nsIntRect& iterRect = iter.Get();
dom::ProfileTimelineLayerRect rect;
rect.mX = iterRect.X();
rect.mY = iterRect.Y();
rect.mWidth = iterRect.Width();
rect.mHeight = iterRect.Height();
if (!aRectangles.AppendElement(rect, fallible)) {
// XXX(Bug 1632090) Instead of extending the array 1-by-1 (which might
// involve multiple reallocations) and potentially crashing here,
// SetCapacity could be called outside the loop once.
mozalloc_handle_oom(0);
}
}
}
private:
nsIntRegion mRegion;
};
} // namespace mozilla
#endif // mozilla_LayerTimelineMarker_h_