content/common/gpu/gpu_memory_manager_client.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_CLIENT_H_
   6 #define CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_CLIENT_H_
   7
   8 #include <list>
   9
  10 #include "base/basictypes.h"
  11 #include "content/common/content_export.h"
  12 #include "gpu/command_buffer/common/gpu_memory_allocation.h"
  13 #include "gpu/command_buffer/service/memory_tracking.h"
  14 #include "ui/gfx/size.h"
  15
  16 namespace content {
  17
  18 class GpuMemoryManager;
  19 class GpuMemoryTrackingGroup;
  20
  21 // The interface that the GPU memory manager uses to manipulate a client (to
  22 // send it allocation information and query its properties).
  23 class CONTENT_EXPORT GpuMemoryManagerClient {
  24  public:
  25   virtual ~GpuMemoryManagerClient() {}
  26
  27   // Returns surface size.
  28   virtual gfx::Size GetSurfaceSize() const = 0;
  29
  30   // Returns the memory tracker for this stub.
  31   virtual gpu::gles2::MemoryTracker* GetMemoryTracker() const = 0;
  32
  33   // Sets buffer usage depending on Memory Allocation
  34   virtual void SetMemoryAllocation(
  35       const gpu::MemoryAllocation& allocation) = 0;
  36
  37   virtual void SuggestHaveFrontBuffer(bool suggest_have_frontbuffer) = 0;
  38
  39   // Returns in bytes the total amount of GPU memory for the GPU which this
  40   // context is currently rendering on. Returns false if no extension exists
  41   // to get the exact amount of GPU memory.
  42   virtual bool GetTotalGpuMemory(uint64* bytes) = 0;
  43 };
  44
  45 // The state associated with a GPU memory manager client. This acts as the
  46 // handle through which the client interacts with the GPU memory manager.
  47 class CONTENT_EXPORT GpuMemoryManagerClientState {
  48  public:
  49   ~GpuMemoryManagerClientState();
  50   void SetVisible(bool visible);
  51
  52  private:
  53   friend class GpuMemoryManager;
  54
  55   GpuMemoryManagerClientState(GpuMemoryManager* memory_manager,
  56                               GpuMemoryManagerClient* client,
  57                               GpuMemoryTrackingGroup* tracking_group,
  58                               bool has_surface,
  59                               bool visible);
  60
  61   // The memory manager this client is hanging off of.
  62   GpuMemoryManager* memory_manager_;
  63
  64   // The client to send allocations to.
  65   GpuMemoryManagerClient* client_;
  66
  67   // The tracking group for this client.
  68   GpuMemoryTrackingGroup* tracking_group_;
  69
  70   // Offscreen commandbuffers will not have a surface.
  71   const bool has_surface_;
  72
  73   // Whether or not this client is visible.
  74   bool visible_;
  75
  76   // If the client has a surface, then this is an iterator in the
  77   // clients_visible_mru_ if this client is visible and
  78   // clients_nonvisible_mru_ if this is non-visible. Otherwise this is an
  79   // iterator in clients_nonsurface_.
  80   std::list<GpuMemoryManagerClientState*>::iterator list_iterator_;
  81   bool list_iterator_valid_;
  82
  83   // Set to disable allocating a frontbuffer or to disable allocations
  84   // for clients that don't have surfaces.
  85   bool hibernated_;
  86 };
  87
  88 }  // namespace content
  89
  90 #endif  // CONTENT_COMMON_GPU_GPU_MEMORY_MANAGER_CLIENT_H_