Add tracing for GL texture objects

cc/resources/resource_provider.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_RESOURCES_RESOURCE_PROVIDER_H_
 #define CC_RESOURCES_RESOURCE_PROVIDER_H_
 
 #include <deque>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
+#include "base/trace_event/memory_allocator_dump.h"
+#include "base/trace_event/memory_dump_provider.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/resource_id.h"
 #include "cc/output/context_provider.h"
 #include "cc/output/output_surface.h"
 #include "cc/resources/release_callback_impl.h"
 #include "cc/resources/resource_format.h"
 #include "cc/resources/return_callback.h"
 #include "cc/resources/shared_bitmap.h"
 #include "cc/resources/single_release_callback_impl.h"
 #include "cc/resources/texture_mailbox.h"
@@ skipping 20 matching lines @@
 }
 
 namespace cc {
 class BlockingTaskRunner;
 class IdAllocator;
 class SharedBitmap;
 class SharedBitmapManager;
 
 // This class is not thread-safe and can only be called from the thread it was
 // created on (in practice, the impl thread).
-class CC_EXPORT ResourceProvider {
+class CC_EXPORT ResourceProvider
+    : public base::trace_event::MemoryDumpProvider {
  private:
   struct Resource;
 
  public:
   typedef std::vector<ResourceId> ResourceIdArray;
   typedef base::hash_set<ResourceId> ResourceIdSet;
   typedef base::hash_map<ResourceId, ResourceId> ResourceIdMap;
   enum TextureHint {
     TEXTURE_HINT_DEFAULT = 0x0,
     TEXTURE_HINT_IMMUTABLE = 0x1,
     TEXTURE_HINT_FRAMEBUFFER = 0x2,
     TEXTURE_HINT_IMMUTABLE_FRAMEBUFFER =
         TEXTURE_HINT_IMMUTABLE | TEXTURE_HINT_FRAMEBUFFER
   };
   enum ResourceType {
     RESOURCE_TYPE_GL_TEXTURE,
     RESOURCE_TYPE_BITMAP,
   };
 
   static scoped_ptr<ResourceProvider> Create(
       OutputSurface* output_surface,
       SharedBitmapManager* shared_bitmap_manager,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
       BlockingTaskRunner* blocking_main_thread_task_runner,
       int highp_threshold_min,
       bool use_rgba_4444_texture_format,
       size_t id_allocation_chunk_size,
       bool use_persistent_map_for_gpu_memory_buffers);
-  virtual ~ResourceProvider();
+  ~ResourceProvider() override;
 
   void DidLoseOutputSurface() { lost_output_surface_ = true; }
 
   int max_texture_size() const { return max_texture_size_; }
   ResourceFormat memory_efficient_texture_format() const {
     return use_rgba_4444_texture_format_ ? RGBA_4444 : best_texture_format_;
   }
   ResourceFormat best_texture_format() const { return best_texture_format_; }
   ResourceFormat best_render_buffer_format() const {
     return best_render_buffer_format_;
@@ skipping 331 matching lines @@
   void WaitSyncPointIfNeeded(ResourceId id);
 
   void WaitReadLockIfNeeded(ResourceId id);
 
   static GLint GetActiveTextureUnit(gpu::gles2::GLES2Interface* gl);
 
   OutputSurface* output_surface() { return output_surface_; }
 
   void ValidateResource(ResourceId id) const;
 
+  // base::trace_event::MemoryDumpProvider implementation.
+  bool OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd) override;
+
  protected:
   ResourceProvider(OutputSurface* output_surface,
                    SharedBitmapManager* shared_bitmap_manager,
                    gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
                    BlockingTaskRunner* blocking_main_thread_task_runner,
                    int highp_threshold_min,
                    bool use_rgba_4444_texture_format,
                    size_t id_allocation_chunk_size,
                    bool use_persistent_map_for_gpu_memory_buffers);
   void Initialize();
@@ skipping 112 matching lines @@
   void BindImageForSampling(Resource* resource);
   // Binds the given GL resource to a texture target for sampling using the
   // specified filter for both minification and magnification. Returns the
   // texture target used. The resource must be locked for reading.
   GLenum BindForSampling(ResourceId resource_id, GLenum unit, GLenum filter);
 
   // Returns NULL if the output_surface_ does not have a ContextProvider.
   gpu::gles2::GLES2Interface* ContextGL() const;
   class GrContext* GrContext(bool worker_context) const;
 
+  base::trace_event::MemoryAllocatorDump* DumpForResource(
+      base::trace_event::ProcessMemoryDump* pmd,
+      const ResourceId& id,

[reveman, 2015/07/28 21:38:49]

nit: no need to pass the id by reference

[ericrk, 2015/07/29 18:46:46]

removed this fn.

+      const Resource& resource) const;
+
   OutputSurface* output_surface_;
   SharedBitmapManager* shared_bitmap_manager_;
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager_;
   BlockingTaskRunner* blocking_main_thread_task_runner_;
   bool lost_output_surface_;
   int highp_threshold_min_;
   ResourceId next_id_;
   ResourceMap resources_;
   int next_child_;
   ChildMap children_;
@@ skipping 76 matching lines @@
   return format_gl_data_format[format];
 }
 
 inline GLenum GLInternalFormat(ResourceFormat format) {
   return GLDataFormat(format);
 }
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_PROVIDER_H_