WIP GPU scheduler + delayed activation / tile draw

gpu/ipc/service/gpu_command_buffer_stub.h

 // Copyright (c) 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 GPU_IPC_SERVICE_GPU_COMMAND_BUFFER_STUB_H_
 #define GPU_IPC_SERVICE_GPU_COMMAND_BUFFER_STUB_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <deque>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "gpu/command_buffer/common/command_buffer_id.h"
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/command_buffer/common/gpu_memory_allocation.h"
+#include "gpu/command_buffer/common/preemption_flag.h"
 #include "gpu/command_buffer/service/command_buffer_service.h"
-#include "gpu/command_buffer/service/command_executor.h"
 #include "gpu/command_buffer/service/context_group.h"
 #include "gpu/gpu_export.h"
 #include "gpu/ipc/common/surface_handle.h"
 #include "gpu/ipc/service/gpu_memory_manager.h"
 #include "gpu/ipc/service/image_transport_surface_delegate.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 #include "ui/gfx/swap_result.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gpu_preference.h"
 #include "url/gurl.h"
 
 namespace gpu {
 struct Mailbox;
 struct SyncToken;
+class CommandExecutor;
+class GpuScheduler;
 class SyncPointClient;
 }
 
 struct GPUCreateCommandBufferConfig;
 struct GpuCommandBufferMsg_CreateImage_Params;
 
 namespace gpu {
 
 class GpuChannel;
 struct WaitForCommandState;
 
 class GPU_EXPORT GpuCommandBufferStub
     : public IPC::Listener,
       public IPC::Sender,
       public ImageTransportSurfaceDelegate,
       public base::SupportsWeakPtr<GpuCommandBufferStub> {
  public:
   class DestructionObserver {
    public:
     // Called in Destroy(), before the context/surface are released.
     virtual void OnWillDestroyStub() = 0;
 
    protected:
     virtual ~DestructionObserver() {}
   };
 
   typedef base::Callback<void(const std::vector<ui::LatencyInfo>&)>
       LatencyInfoCallback;
 
+  static gpu::CommandBufferId GetCommandBufferID(int32_t channel_id,
+                                                 int32_t route_id);
+  static int32_t GetChannelID(gpu::CommandBufferId cmd_buffer_id);
+  static int32_t GetRouteID(gpu::CommandBufferId cmd_buffer_id);
+
   static std::unique_ptr<GpuCommandBufferStub> Create(
-    GpuChannel* channel,
-    GpuCommandBufferStub* share_group,
-    const GPUCreateCommandBufferConfig& init_params,
-    int32_t route_id,
-    std::unique_ptr<base::SharedMemory> shared_state_shm);
+      GpuChannel* channel,
+      GpuCommandBufferStub* share_group,
+      const GPUCreateCommandBufferConfig& init_params,
+      int32_t route_id,
+      std::unique_ptr<base::SharedMemory> shared_state_shm);
 
   ~GpuCommandBufferStub() override;
 
   // IPC::Listener implementation:
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // IPC::Sender implementation:
   bool Send(IPC::Message* msg) override;
 
 // ImageTransportSurfaceDelegate implementation:
@@ skipping 10 matching lines @@
 
   gles2::MemoryTracker* GetMemoryTracker() const;
 
   // Whether this command buffer can currently handle IPC messages.
   bool IsScheduled();
 
   // Whether there are commands in the buffer that haven't been processed.
   bool HasUnprocessedCommands();
 
   gles2::GLES2Decoder* decoder() const { return decoder_.get(); }
-  CommandExecutor* scheduler() const { return executor_.get(); }
   GpuChannel* channel() const { return channel_; }
 
   // Unique command buffer ID for this command buffer stub.
   CommandBufferId command_buffer_id() const { return command_buffer_id_; }
 
   // Identifies the various GpuCommandBufferStubs in the GPU process belonging
   // to the same renderer process.
   int32_t route_id() const { return route_id_; }
 
   // Identifies the stream for this command buffer.
@@ skipping 91 matching lines @@
   void CheckCompleteWaits();
   void PullTextureUpdates(CommandBufferNamespace namespace_id,
                           CommandBufferId command_buffer_id,
                           uint32_t release);
 
   // The lifetime of objects of this class is managed by a GpuChannel. The
   // GpuChannels destroy all the GpuCommandBufferStubs that they own when they
   // are destroyed. So a raw pointer is safe.
   GpuChannel* const channel_;
 
+  GpuScheduler* scheduler_;
   // The group of contexts that share namespaces with this context.
   scoped_refptr<gles2::ContextGroup> context_group_;
 
   bool initialized_;
   const SurfaceHandle surface_handle_;
   bool use_virtualized_gl_context_;
   const CommandBufferId command_buffer_id_;
   const int32_t stream_id_;
   const int32_t route_id_;
   uint32_t last_flush_count_;
@@ skipping 19 matching lines @@
 
   std::unique_ptr<WaitForCommandState> wait_for_token_;
   std::unique_ptr<WaitForCommandState> wait_for_get_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuCommandBufferStub);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_COMMAND_BUFFER_STUB_H_