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// 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_host.h"
#include "base/memory/ptr_util.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 "gpu/ipc/client/gpu_memory_buffer_impl_shared_memory.h"
#include "mojo/public/cpp/bindings/strong_binding.h"
#include "mojo/public/cpp/system/buffer.h"
#include "mojo/public/cpp/system/platform_handle.h"
#include "services/service_manager/public/cpp/connection.h"
#include "services/ui/common/server_gpu_memory_buffer_manager.h"
#include "services/ui/ws/gpu_host_delegate.h"
#include "ui/gfx/buffer_format_util.h"
#if defined(OS_WIN)
#include "ui/gfx/win/rendering_window_manager.h"
#endif
namespace ui {
namespace ws {
namespace {
// The client Id 1 is reserved for the display compositor.
const int32_t kInternalGpuChannelClientId = 2;
// The implementation that relays requests from clients to the real
// service implementation in the GPU process over mojom.GpuService.
class GpuClient : public mojom::Gpu {
public:
GpuClient(int client_id,
gpu::GPUInfo* gpu_info,
ServerGpuMemoryBufferManager* gpu_memory_buffer_manager,
mojom::GpuService* gpu_service)
: client_id_(client_id),
gpu_info_(gpu_info),
gpu_memory_buffer_manager_(gpu_memory_buffer_manager),
gpu_service_(gpu_service) {
DCHECK(gpu_memory_buffer_manager_);
DCHECK(gpu_service_);
}
~GpuClient() override {
gpu_memory_buffer_manager_->DestroyAllGpuMemoryBufferForClient(client_id_);
}
private:
void OnGpuChannelEstablished(const EstablishGpuChannelCallback& callback,
mojo::ScopedMessagePipeHandle channel_handle) {
callback.Run(client_id_, std::move(channel_handle), *gpu_info_);
}
// mojom::Gpu 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_->EstablishGpuChannel(
client_id_, client_tracing_id, is_gpu_host,
base::Bind(&GpuClient::OnGpuChannelEstablished, base::Unretained(this),
callback));
}
void CreateGpuMemoryBuffer(
gfx::GpuMemoryBufferId id,
const gfx::Size& size,
gfx::BufferFormat format,
gfx::BufferUsage usage,
const mojom::Gpu::CreateGpuMemoryBufferCallback& callback) override {
auto handle = gpu_memory_buffer_manager_->CreateGpuMemoryBufferHandle(
id, client_id_, size, format, usage, gpu::kNullSurfaceHandle);
callback.Run(handle);
}
void DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
const gpu::SyncToken& sync_token) override {
gpu_memory_buffer_manager_->DestroyGpuMemoryBuffer(id, client_id_,
sync_token);
}
const int client_id_;
// The objects these pointers refer to are owned by the GpuHost object.
const gpu::GPUInfo* gpu_info_;
ServerGpuMemoryBufferManager* gpu_memory_buffer_manager_;
mojom::GpuService* gpu_service_;
DISALLOW_COPY_AND_ASSIGN(GpuClient);
};
} // namespace
GpuHost::GpuHost(GpuHostDelegate* delegate)
: delegate_(delegate),
next_client_id_(kInternalGpuChannelClientId + 1),
main_thread_task_runner_(base::ThreadTaskRunnerHandle::Get()),
gpu_host_binding_(this) {
// TODO(sad): Once GPU process is split, this would look like:
// connector->BindInterface("gpu", &gpu_main_);
gpu_main_impl_ = base::MakeUnique<GpuMain>(MakeRequest(&gpu_main_));
gpu_main_impl_->OnStart();
// TODO(sad): Correctly initialize gpu::GpuPreferences (like it is initialized
// in GpuProcessHost::Init()).
gpu::GpuPreferences preferences;
gpu_main_->CreateGpuService(MakeRequest(&gpu_service_),
gpu_host_binding_.CreateInterfacePtrAndBind(),
preferences);
gpu_memory_buffer_manager_ = base::MakeUnique<ServerGpuMemoryBufferManager>(
gpu_service_.get(), next_client_id_++);
}
GpuHost::~GpuHost() {}
void GpuHost::Add(mojom::GpuRequest request) {
mojo::MakeStrongBinding(
base::MakeUnique<GpuClient>(next_client_id_++, &gpu_info_,
gpu_memory_buffer_manager_.get(),
gpu_service_.get()),
std::move(request));
}
void GpuHost::OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) {
#if defined(OS_WIN)
gfx::RenderingWindowManager::GetInstance()->RegisterParent(widget);
#endif
}
void GpuHost::OnAcceleratedWidgetDestroyed(gfx::AcceleratedWidget widget) {
#if defined(OS_WIN)
gfx::RenderingWindowManager::GetInstance()->UnregisterParent(widget);
#endif
}
void GpuHost::CreateDisplayCompositor(
cc::mojom::DisplayCompositorRequest request,
cc::mojom::DisplayCompositorClientPtr client) {
gpu_main_->CreateDisplayCompositor(std::move(request), std::move(client));
}
void GpuHost::OnBadMessageFromGpu() {
// TODO(sad): Received some unexpected message from the gpu process. We
// should kill the process and restart it.
NOTIMPLEMENTED();
}
void GpuHost::DidInitialize(const gpu::GPUInfo& gpu_info) {
gpu_info_ = gpu_info;
delegate_->OnGpuServiceInitialized();
}
void GpuHost::DidCreateOffscreenContext(const GURL& url) {}
void GpuHost::DidDestroyOffscreenContext(const GURL& url) {}
void GpuHost::DidDestroyChannel(int32_t client_id) {}
void GpuHost::DidLoseContext(bool offscreen,
gpu::error::ContextLostReason reason,
const GURL& active_url) {}
void GpuHost::SetChildSurface(gpu::SurfaceHandle parent,
gpu::SurfaceHandle child) {
#if defined(OS_WIN)
// Verify that |parent| was created by the window server.
DWORD process_id = 0;
DWORD thread_id = GetWindowThreadProcessId(parent, &process_id);
if (!thread_id || process_id != ::GetCurrentProcessId()) {
OnBadMessageFromGpu();
return;
}
// TODO(sad): Also verify that |child| was created by the mus-gpu process.
if (!gfx::RenderingWindowManager::GetInstance()->RegisterChild(parent,
child)) {
OnBadMessageFromGpu();
}
#else
NOTREACHED();
#endif
}
void GpuHost::StoreShaderToDisk(int32_t client_id,
const std::string& key,
const std::string& shader) {}
} // namespace ws
} // namespace ui
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