dom/canvas/WebGLMemoryTracker.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "WebGLMemoryTracker.h"
   7
   8 #include "HostWebGLContext.h"
   9 #include "WebGLBuffer.h"
  10 #include "WebGLRenderbuffer.h"
  11 #include "WebGLShader.h"
  12 #include "WebGLTexture.h"
  13
  14 namespace mozilla {
  15
  16 MOZ_DEFINE_MALLOC_SIZE_OF(WebGLShaderMallocSizeOf)
  17
  18 NS_IMETHODIMP
  19 WebGLMemoryTracker::CollectReports(nsIHandleReportCallback* aHandleReport,
  20                                    nsISupports* aData, bool) {
  21   const auto locked = HostWebGLContext::OutstandingContexts();
  22   const auto& contexts = locked->contexts;
  23
  24   const auto contextCount = contexts.size();
  25
  26   size_t bufferCount = 0;
  27   int64_t bufferGpuSize = 0;
  28   int64_t bufferCacheSize = 0;
  29
  30   size_t rbCount = 0;
  31   int64_t rbGpuSize = 0;
  32
  33   size_t shaderCount = 0;
  34   int64_t shaderCpuSize = 0;
  35
  36   size_t texCount = 0;
  37   int64_t texGpuSize = 0;
  38
  39   for (const auto& context : contexts) {
  40     bufferCount += context->mBufferMap.size();
  41     for (const auto& pair : context->mBufferMap) {
  42       const auto& buffer = *pair.second;
  43       bufferGpuSize += buffer.mByteLength;
  44
  45       if (buffer.mIndexCache) {
  46         bufferCacheSize += buffer.mByteLength;
  47       }
  48       bufferCacheSize += buffer.mIndexRanges.size() *
  49                          sizeof(decltype(buffer.mIndexRanges)::value_type);
  50     }
  51
  52     // -
  53
  54     rbCount += context->mRenderbufferMap.size();
  55     for (const auto& pair : context->mRenderbufferMap) {
  56       const auto& rb = pair.second;
  57       rbGpuSize += rb->MemoryUsage();
  58     }
  59
  60     // -
  61
  62     shaderCount += context->mShaderMap.size();
  63     for (const auto& pair : context->mShaderMap) {
  64       const auto& shader = pair.second;
  65       shaderCpuSize += shader->SizeOfIncludingThis(WebGLShaderMallocSizeOf);
  66     }
  67
  68     // -
  69
  70     texCount += context->mTextureMap.size();
  71     for (const auto& pair : context->mTextureMap) {
  72       const auto& texture = pair.second;
  73       texGpuSize += texture->MemoryUsage();
  74     }
  75   }
  76
  77   // -
  78
  79   MOZ_COLLECT_REPORT(
  80       "webgl-texture-memory", KIND_OTHER, UNITS_BYTES, texGpuSize,
  81       "Memory used by WebGL textures. The OpenGL implementation is free to "
  82       "store these textures in either video memory or main memory. This "
  83       "measurement is only a lower bound, actual memory usage may be higher "
  84       "for example if the storage is strided.");
  85
  86   MOZ_COLLECT_REPORT("webgl-texture-count", KIND_OTHER, UNITS_COUNT,
  87                      static_cast<int64_t>(texCount),
  88                      "Number of WebGL textures.");
  89
  90   MOZ_COLLECT_REPORT(
  91       "webgl-buffer-memory", KIND_OTHER, UNITS_BYTES, bufferGpuSize,
  92       "Memory used by WebGL buffers. The OpenGL implementation is free to "
  93       "store these buffers in either video memory or main memory. This "
  94       "measurement is only a lower bound, actual memory usage may be higher "
  95       "for example if the storage is strided.");
  96
  97   MOZ_COLLECT_REPORT(
  98       "explicit/webgl/buffer-cache-memory", KIND_HEAP, UNITS_BYTES,
  99       bufferCacheSize,
 100       "Memory used by WebGL buffer caches. The WebGL implementation caches "
 101       "the contents of element array buffers only. This adds up with the "
 102       "'webgl-buffer-memory' value, but contrary to it, this one represents "
 103       "bytes on the heap, not managed by OpenGL.");
 104
 105   MOZ_COLLECT_REPORT("webgl-buffer-count", KIND_OTHER, UNITS_COUNT,
 106                      static_cast<int64_t>(bufferCount),
 107                      "Number of WebGL buffers.");
 108
 109   MOZ_COLLECT_REPORT(
 110       "webgl-renderbuffer-memory", KIND_OTHER, UNITS_BYTES, rbGpuSize,
 111       "Memory used by WebGL renderbuffers. The OpenGL implementation is free "
 112       "to store these renderbuffers in either video memory or main memory. "
 113       "This measurement is only a lower bound, actual memory usage may be "
 114       "higher, for example if the storage is strided.");
 115
 116   MOZ_COLLECT_REPORT("webgl-renderbuffer-count", KIND_OTHER, UNITS_COUNT,
 117                      static_cast<int64_t>(rbCount),
 118                      "Number of WebGL renderbuffers.");
 119
 120   MOZ_COLLECT_REPORT(
 121       "explicit/webgl/shader", KIND_HEAP, UNITS_BYTES, shaderCpuSize,
 122       "Combined size of WebGL shader ASCII sources and translation logs "
 123       "cached on the heap.");
 124
 125   MOZ_COLLECT_REPORT("webgl-shader-count", KIND_OTHER, UNITS_COUNT,
 126                      static_cast<int64_t>(shaderCount),
 127                      "Number of WebGL shaders.");
 128
 129   MOZ_COLLECT_REPORT("webgl-context-count", KIND_OTHER, UNITS_COUNT,
 130                      static_cast<int64_t>(contextCount),
 131                      "Number of WebGL contexts.");
 132
 133   return NS_OK;
 134 }
 135
 136 NS_IMPL_ISUPPORTS(WebGLMemoryTracker, nsIMemoryReporter)
 137
 138 }  // namespace mozilla