gpu: Refactor memory buffer handling code out of content.

services/ui/ws/gpu_service_proxy.cc

 // Copyright 2016 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.
 
 #include "services/ui/ws/gpu_service_proxy.h"
 
 #include "base/memory/shared_memory.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "gpu/ipc/client/gpu_channel_host.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/service_manager/public/cpp/connection.h"
 #include "services/ui/ws/gpu_service_proxy_delegate.h"
 #include "services/ui/ws/mus_gpu_memory_buffer_manager.h"
 
 namespace ui {
 namespace ws {
 
 namespace {
 
 const int32_t kInternalGpuChannelClientId = 1;
 const uint64_t kInternalGpuChannelClientTracingId = 1;
 
+class GpuServiceImpl : public mojom::GpuService {
+ public:
+  GpuServiceImpl(int client_id,
+                 gpu::GPUInfo* gpu_info,
+                 gpu::GpuHostMemoryBufferManager* gpu_memory_buffer_manager,
+                 mojom::GpuServiceInternal* gpu_service_internal)
+      : client_id_(client_id),
+        gpu_info_(gpu_info),
+        gpu_memory_buffer_manager_(gpu_memory_buffer_manager),
+        gpu_service_internal_(gpu_service_internal) {}
+  ~GpuServiceImpl() override {}
+
+ private:
+  void OnGpuChannelEstablished(const EstablishGpuChannelCallback& callback,
+                               mojo::ScopedMessagePipeHandle channel_handle) {
+    callback.Run(client_id_, std::move(channel_handle), *gpu_info_);
+  }
+
+  // mojom::GpuService overrides:
+  void EstablishGpuChannel(
+      const EstablishGpuChannelCallback& callback) override {
+    // TODO(sad): crbug.com/617415 figure out how to generate a meaningful
+    // tracing id.
+    const uint64_t client_tracing_id = 0;
+    constexpr bool is_gpu_host = false;
+    gpu_service_internal_->EstablishGpuChannel(
+        client_id_, client_tracing_id, is_gpu_host,
+        base::Bind(&GpuServiceImpl::OnGpuChannelEstablished,
+                   base::Unretained(this), callback));
+  }
+
+  void CreateGpuMemoryBuffer(
+      gfx::GpuMemoryBufferId id,
+      const gfx::Size& size,
+      gfx::BufferFormat format,
+      gfx::BufferUsage usage,
+      const mojom::GpuService::CreateGpuMemoryBufferCallback& callback)
+      override {
+#if 0
+    NOTIMPLEMENTED();
+    callback.Run(gfx::GpuMemoryBufferHandle());
+#else
+    gpu_memory_buffer_manager_->AllocateGpuMemoryBufferForClient(
+        id, size, format, usage, client_id_, callback);
+#endif
+  }
+
+  void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
+                              const gpu::SyncToken& sync_token) override {
+    NOTIMPLEMENTED();
+  }
+
+  const int client_id_;
+  const gpu::GPUInfo* gpu_info_;
+  gpu::GpuHostMemoryBufferManager* gpu_memory_buffer_manager_;
+  mojom::GpuServiceInternal* gpu_service_internal_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuServiceImpl);
+};
+
 }  // namespace
 
 GpuServiceProxy::GpuServiceProxy(GpuServiceProxyDelegate* delegate)
     : delegate_(delegate),
       next_client_id_(kInternalGpuChannelClientId + 1),
       main_thread_task_runner_(base::ThreadTaskRunnerHandle::Get()),
       shutdown_event_(base::WaitableEvent::ResetPolicy::AUTOMATIC,
                       base::WaitableEvent::InitialState::NOT_SIGNALED) {
   gpu_main_.OnStart();
   // TODO(sad): Once GPU process is split, this would look like:
   //   connector->ConnectToInterface("service:gpu", &gpu_service_);
   gpu_main_.Create(GetProxy(&gpu_service_));
   gpu_service_->Initialize(
       base::Bind(&GpuServiceProxy::OnInitialized, base::Unretained(this)));
+
+  io_thread_ = base::MakeUnique<base::Thread>("GPUIOThread");
+  base::Thread::Options thread_options(base::MessageLoop::TYPE_IO, 0);
+  thread_options.priority = base::ThreadPriority::NORMAL;
+  CHECK(io_thread_->StartWithOptions(thread_options));
+
+  gpu_memory_buffer_manager_ =
+      base::MakeUnique<gpu::GpuHostMemoryBufferManager>();
+  gpu_memory_buffer_manager_->SetIO(io_thread_->task_runner());
 }
 
 GpuServiceProxy::~GpuServiceProxy() {
   if (gpu_channel_)
     gpu_channel_->DestroyChannel();
 }
 
 void GpuServiceProxy::Add(mojom::GpuServiceRequest request) {
-  bindings_.AddBinding(this, std::move(request));
+  mojo::MakeStrongBinding(
+      base::MakeUnique<GpuServiceImpl>(next_client_id_++, &gpu_info_,
+                                       gpu_memory_buffer_manager_.get(),
+                                       gpu_service_.get()),
+      std::move(request));
 }
 
 void GpuServiceProxy::OnInitialized(const gpu::GPUInfo& gpu_info) {
   gpu_info_ = gpu_info;
 
   constexpr bool is_gpu_host = true;
   gpu_service_->EstablishGpuChannel(
       kInternalGpuChannelClientId, kInternalGpuChannelClientTracingId,
       is_gpu_host, base::Bind(&GpuServiceProxy::OnInternalGpuChannelEstablished,
                              base::Unretained(this)));
 }
 
 void GpuServiceProxy::OnInternalGpuChannelEstablished(
     mojo::ScopedMessagePipeHandle channel_handle) {
-  io_thread_ = base::MakeUnique<base::Thread>("GPUIOThread");
-  base::Thread::Options thread_options(base::MessageLoop::TYPE_IO, 0);
-  thread_options.priority = base::ThreadPriority::NORMAL;
-  CHECK(io_thread_->StartWithOptions(thread_options));
-
-  gpu_memory_buffer_manager_ = base::MakeUnique<MusGpuMemoryBufferManager>(
-      gpu_service_.get(), kInternalGpuChannelClientId);
   gpu_channel_ = gpu::GpuChannelHost::Create(
       this, kInternalGpuChannelClientId, gpu_info_,
       IPC::ChannelHandle(channel_handle.release()), &shutdown_event_,
       gpu_memory_buffer_manager_.get());
   if (delegate_)
     delegate_->OnGpuChannelEstablished(gpu_channel_);
 }
 
-void GpuServiceProxy::OnGpuChannelEstablished(
-    const EstablishGpuChannelCallback& callback,
-    int32_t client_id,
-    mojo::ScopedMessagePipeHandle channel_handle) {
-  callback.Run(client_id, std::move(channel_handle), gpu_info_);
-}
-
-void GpuServiceProxy::EstablishGpuChannel(
-    const EstablishGpuChannelCallback& callback) {
-  const int client_id = next_client_id_++;
-  // TODO(sad): crbug.com/617415 figure out how to generate a meaningful tracing
-  // id.
-  const uint64_t client_tracing_id = 0;
-  constexpr bool is_gpu_host = false;
-  gpu_service_->EstablishGpuChannel(
-      client_id, client_tracing_id, is_gpu_host,
-      base::Bind(&GpuServiceProxy::OnGpuChannelEstablished,
-                 base::Unretained(this), callback, client_id));
-}
-
-void GpuServiceProxy::CreateGpuMemoryBuffer(
-    gfx::GpuMemoryBufferId id,
-    const gfx::Size& size,
-    gfx::BufferFormat format,
-    gfx::BufferUsage usage,
-    uint64_t surface_id,
-    const mojom::GpuService::CreateGpuMemoryBufferCallback& callback) {
-  NOTIMPLEMENTED();
-}
-
-void GpuServiceProxy::DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
-                                             const gpu::SyncToken& sync_token) {
-  NOTIMPLEMENTED();
-}
-
 bool GpuServiceProxy::IsMainThread() {
   return main_thread_task_runner_->BelongsToCurrentThread();
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
 GpuServiceProxy::GetIOThreadTaskRunner() {
   return io_thread_->task_runner();
 }
 
 std::unique_ptr<base::SharedMemory> GpuServiceProxy::AllocateSharedMemory(
     size_t size) {
   std::unique_ptr<base::SharedMemory> shm(new base::SharedMemory());
   if (!shm->CreateAnonymous(size))
     shm.reset();
   return shm;
 }
 
 }  // namespace ws
 }  // namespace ui