1 files changed, 105 insertions, 0 deletions
diff --git a/gfx/gl/GfxTexturesReporter.h b/gfx/gl/GfxTexturesReporter.h
new file mode 100644
index 000000000..ed4603f0a
--- /dev/null
+++ b/gfx/gl/GfxTexturesReporter.h
@@ -0,0 +1,105 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 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 GFXTEXTURESREPORTER_H_
+#define GFXTEXTURESREPORTER_H_
+
+#include "mozilla/Atomics.h"
+#include "nsIMemoryReporter.h"
+#include "GLTypes.h"
+
+namespace mozilla {
+namespace gl {
+
+class GfxTexturesReporter final : public nsIMemoryReporter
+{
+    ~GfxTexturesReporter() {}
+
+public:
+    NS_DECL_ISUPPORTS
+
+    GfxTexturesReporter()
+    {
+#ifdef DEBUG
+        // There must be only one instance of this class, due to |sAmount|
+        // being static.  Assert this.
+        static bool hasRun = false;
+        MOZ_ASSERT(!hasRun);
+        hasRun = true;
+#endif
+    }
+
+    enum MemoryUse {
+        // when memory being allocated is reported to a memory reporter
+        MemoryAllocated,
+        // when memory being freed is reported to a memory reporter
+        MemoryFreed
+    };
+
+    // When memory is used/freed for tile textures, call this method to update
+    // the value reported by this memory reporter.
+    static void UpdateAmount(MemoryUse action, size_t amount);
+
+    static void UpdateWasteAmount(size_t delta) {
+      sTileWasteAmount += delta;
+    }
+
+    NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
+                              nsISupports* aData, bool aAnonymize) override
+    {
+        MOZ_COLLECT_REPORT(
+            "gfx-tiles-waste", KIND_OTHER, UNITS_BYTES,
+            int64_t(sTileWasteAmount),
+            "Memory lost due to tiles extending past content boundaries");
+
+        MOZ_COLLECT_REPORT(
+            "gfx-textures", KIND_OTHER, UNITS_BYTES,
+            int64_t(sAmount),
+            "Memory used for storing GL textures.");
+
+        MOZ_COLLECT_REPORT(
+            "gfx-textures-peak", KIND_OTHER, UNITS_BYTES,
+            int64_t(sPeakAmount),
+            "Peak memory used for storing GL textures.");
+
+        return NS_OK;
+    }
+
+private:
+    static Atomic<size_t> sAmount;
+    static Atomic<size_t> sPeakAmount;
+    // Count the amount of memory lost to tile waste
+    static Atomic<size_t> sTileWasteAmount;
+};
+
+class GfxTextureWasteTracker {
+public:
+  GfxTextureWasteTracker()
+    : mBytes(0)
+  {
+    MOZ_COUNT_CTOR(GfxTextureWasteTracker);
+  }
+
+  void Update(int32_t aPixelArea, int32_t aBytesPerPixel) {
+    GfxTexturesReporter::UpdateWasteAmount(-mBytes);
+    mBytes = aPixelArea * aBytesPerPixel;
+    GfxTexturesReporter::UpdateWasteAmount(mBytes);
+  }
+
+  ~GfxTextureWasteTracker() {
+    GfxTexturesReporter::UpdateWasteAmount(-mBytes);
+    MOZ_COUNT_DTOR(GfxTextureWasteTracker);
+  }
+private:
+  GfxTextureWasteTracker(const GfxTextureWasteTracker& aRef);
+
+  int32_t mBytes;
+};
+
+} // namespace gl
+} // namespace mozilla
+
+#endif // GFXTEXTURESREPORTER_H_