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The Tor Browser
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GfxTexturesReporter.h (2975B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef GFXTEXTURESREPORTER_H_
      8 #define GFXTEXTURESREPORTER_H_
      9 
     10 #include "mozilla/Atomics.h"
     11 #include "nsIMemoryReporter.h"
     12 #include "GLTypes.h"
     13 
     14 namespace mozilla {
     15 namespace gl {
     16 
     17 class GfxTexturesReporter final : public nsIMemoryReporter {
     18  ~GfxTexturesReporter() = default;
     19 
     20 public:
     21  NS_DECL_ISUPPORTS
     22 
     23  GfxTexturesReporter() {
     24 #ifdef DEBUG
     25    // There must be only one instance of this class, due to |sAmount|
     26    // being static.  Assert this.
     27    static bool hasRun = false;
     28    MOZ_ASSERT(!hasRun);
     29    hasRun = true;
     30 #endif
     31  }
     32 
     33  enum MemoryUse {
     34    // when memory being allocated is reported to a memory reporter
     35    MemoryAllocated,
     36    // when memory being freed is reported to a memory reporter
     37    MemoryFreed
     38  };
     39 
     40  // When memory is used/freed for tile textures, call this method to update
     41  // the value reported by this memory reporter.
     42  static void UpdateAmount(MemoryUse action, size_t amount);
     43 
     44  static void UpdateWasteAmount(int32_t delta) {
     45    if (delta >= 0) {
     46      sTileWasteAmount += static_cast<size_t>(delta);
     47    } else {
     48      sTileWasteAmount -= static_cast<size_t>(-delta);
     49    }
     50  }
     51 
     52  NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
     53                            nsISupports* aData, bool aAnonymize) override {
     54    MOZ_COLLECT_REPORT(
     55        "gfx-tiles-waste", KIND_OTHER, UNITS_BYTES, int64_t(sTileWasteAmount),
     56        "Memory lost due to tiles extending past content boundaries");
     57 
     58    MOZ_COLLECT_REPORT("gfx-textures", KIND_OTHER, UNITS_BYTES,
     59                       int64_t(sAmount),
     60                       "Memory used for storing GL textures.");
     61 
     62    MOZ_COLLECT_REPORT("gfx-textures-peak", KIND_OTHER, UNITS_BYTES,
     63                       int64_t(sPeakAmount),
     64                       "Peak memory used for storing GL textures.");
     65 
     66    return NS_OK;
     67  }
     68 
     69 private:
     70  static Atomic<size_t> sAmount;
     71  static Atomic<size_t> sPeakAmount;
     72  // Count the amount of memory lost to tile waste
     73  static Atomic<size_t> sTileWasteAmount;
     74 };
     75 
     76 class GfxTextureWasteTracker {
     77 public:
     78  GfxTextureWasteTracker() : mBytes(0) {
     79    MOZ_COUNT_CTOR(GfxTextureWasteTracker);
     80  }
     81 
     82  void Update(int32_t aPixelArea, int32_t aBytesPerPixel) {
     83    GfxTexturesReporter::UpdateWasteAmount(-mBytes);
     84    mBytes = aPixelArea * aBytesPerPixel;
     85    GfxTexturesReporter::UpdateWasteAmount(mBytes);
     86  }
     87 
     88  ~GfxTextureWasteTracker() {
     89    GfxTexturesReporter::UpdateWasteAmount(-mBytes);
     90    MOZ_COUNT_DTOR(GfxTextureWasteTracker);
     91  }
     92 
     93 private:
     94  GfxTextureWasteTracker(const GfxTextureWasteTracker& aRef);
     95 
     96  int32_t mBytes;
     97 };
     98 
     99 }  // namespace gl
    100 }  // namespace mozilla
    101 
    102 #endif  // GFXTEXTURESREPORTER_H_