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By delegating responsibility for shared surfaces reporting to imagelib, we can cross reference the GPU shared surfaces cache with the local surface cache in a content process (or the main process). This will allow us to identify entries that are in the GPU cache but not in the content/main process cache, and aid in debugging memory leaks. This functionality is pref'd off by default behind image.mem.debug-reporting. Additionally, we want to report every entry that was mapped into the compositor process, in the compositor process memory report. This will give us a sense of how much of our resident memory is consumed by mapped images in absence of the more detailed cross referencing above.
97 lines
3.7 KiB
C++
97 lines
3.7 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_image_ImageMemoryReporter_h
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#define mozilla_image_ImageMemoryReporter_h
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#include <cstdint>
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#include "nsString.h"
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#include "mozilla/layers/SharedSurfacesMemoryReport.h"
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class nsISupports;
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class nsIHandleReportCallback;
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namespace mozilla {
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namespace image {
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struct ImageMemoryCounter;
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struct SurfaceMemoryCounter;
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class ImageMemoryReporter final
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{
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public:
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/**
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* Initializes image related memory reporting in the compositor process when
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* using WebRender.
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*/
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static void InitForWebRender();
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/**
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* Tears down image related memory reporting in the compositor process when
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* using WebRender.
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*/
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static void ShutdownForWebRender();
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/**
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* Report all remaining entries in the shared surface's memory report. This
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* should be used by the content or main process to allow reporting any
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* entries that is was unable to cross reference with the local surface cache.
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* These are candidates for having been leaked. This should be used in
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* conjunction with AppendSharedSurfacePrefix and/or TrimSharedSurfaces to
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* produce the expected result.
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*/
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static void ReportSharedSurfaces(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData,
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const layers::SharedSurfacesMemoryReport& aSharedSurfaces);
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/**
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* Adjust the path prefix for a surface to include any additional metadata for
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* the shared surface, if any. It will also remove any corresponding entries
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* in the given memory report.
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*/
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static void AppendSharedSurfacePrefix(nsACString& aPathPrefix,
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const SurfaceMemoryCounter& aCounter,
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layers::SharedSurfacesMemoryReport& aSharedSurfaces);
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/**
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* Remove all entries in the memory report for the given set of surfaces for
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* an image. This is useful when we aren't reporting on a particular image
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* because it isn't notable.
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*/
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static void TrimSharedSurfaces(const ImageMemoryCounter& aCounter,
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layers::SharedSurfacesMemoryReport& aSharedSurfaces);
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private:
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/**
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* Report all remaining entries in the shared surface's memory report.
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*
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* aIsForCompositor controls how to intepret what remains in the report. If
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* true, this should mirror exactly what is currently in
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* SharedSurfacesParent's cache. This will report entries that are currently
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* mapped into the compositor process. If false, then we are in a content or
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* main process, and it should have removed entries that also exist in its
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* local surface cache -- thus any remaining entries are those that are
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* candidates for leaks.
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*/
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static void ReportSharedSurfaces(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData,
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bool aIsForCompositor,
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const layers::SharedSurfacesMemoryReport& aSharedSurfaces);
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static void ReportSharedSurface(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData,
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bool aIsForCompositor,
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uint64_t aExternalId,
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const layers::SharedSurfacesMemoryReport::SurfaceEntry& aEntry);
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class WebRenderReporter;
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static WebRenderReporter* sWrReporter;
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};
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} // image
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} // mozilla
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#endif // mozilla_image_ImageMemoryReporter_h
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