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// 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.
#include "content/browser/gpu/browser_gpu_channel_host_factory.h"
#include "base/bind.h"
#include "content/browser/gpu/gpu_data_manager_impl.h"
#include "content/browser/gpu/gpu_process_host.h"
#include "content/browser/gpu/gpu_surface_tracker.h"
#include "content/common/gpu/gpu_messages.h"
#include "content/common/child_process_host_impl.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/content_client.h"
namespace content {
BrowserGpuChannelHostFactory* BrowserGpuChannelHostFactory::instance_ = NULL;
BrowserGpuChannelHostFactory::CreateRequest::CreateRequest()
: event(false, false),
route_id(MSG_ROUTING_NONE) {
}
BrowserGpuChannelHostFactory::CreateRequest::~CreateRequest() {
}
BrowserGpuChannelHostFactory::EstablishRequest::EstablishRequest()
: event(false, false),
gpu_process_handle(base::kNullProcessHandle) {
}
BrowserGpuChannelHostFactory::EstablishRequest::~EstablishRequest() {
}
void BrowserGpuChannelHostFactory::Initialize() {
instance_ = new BrowserGpuChannelHostFactory();
}
void BrowserGpuChannelHostFactory::Terminate() {
delete instance_;
instance_ = NULL;
}
BrowserGpuChannelHostFactory::BrowserGpuChannelHostFactory()
: gpu_client_id_(ChildProcessHostImpl::GenerateChildProcessUniqueId()),
shutdown_event_(new base::WaitableEvent(true, false)),
gpu_host_id_(0) {
}
BrowserGpuChannelHostFactory::~BrowserGpuChannelHostFactory() {
shutdown_event_->Signal();
}
bool BrowserGpuChannelHostFactory::IsMainThread() {
return BrowserThread::CurrentlyOn(BrowserThread::UI);
}
bool BrowserGpuChannelHostFactory::IsIOThread() {
return BrowserThread::CurrentlyOn(BrowserThread::IO);
}
MessageLoop* BrowserGpuChannelHostFactory::GetMainLoop() {
return BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::UI);
}
scoped_refptr<base::MessageLoopProxy>
BrowserGpuChannelHostFactory::GetIOLoopProxy() {
return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO);
}
base::WaitableEvent* BrowserGpuChannelHostFactory::GetShutDownEvent() {
return shutdown_event_.get();
}
scoped_ptr<base::SharedMemory>
BrowserGpuChannelHostFactory::AllocateSharedMemory(uint32 size) {
scoped_ptr<base::SharedMemory> shm(new base::SharedMemory());
if (!shm->CreateAnonymous(size))
return scoped_ptr<base::SharedMemory>();
return shm.Pass();
}
void BrowserGpuChannelHostFactory::CreateViewCommandBufferOnIO(
CreateRequest* request,
int32 surface_id,
const GPUCreateCommandBufferConfig& init_params) {
GpuProcessHost* host = GpuProcessHost::FromID(gpu_host_id_);
if (!host) {
request->event.Signal();
return;
}
gfx::GLSurfaceHandle surface =
GpuSurfaceTracker::Get()->GetSurfaceHandle(surface_id);
host->CreateViewCommandBuffer(
surface,
surface_id,
gpu_client_id_,
init_params,
base::Bind(&BrowserGpuChannelHostFactory::CommandBufferCreatedOnIO,
request));
}
// static
void BrowserGpuChannelHostFactory::CommandBufferCreatedOnIO(
CreateRequest* request, int32 route_id) {
request->route_id = route_id;
request->event.Signal();
}
int32 BrowserGpuChannelHostFactory::CreateViewCommandBuffer(
int32 surface_id,
const GPUCreateCommandBufferConfig& init_params) {
CreateRequest request;
GetIOLoopProxy()->PostTask(FROM_HERE, base::Bind(
&BrowserGpuChannelHostFactory::CreateViewCommandBufferOnIO,
base::Unretained(this),
&request,
surface_id,
init_params));
// We're blocking the UI thread, which is generally undesirable.
// In this case we need to wait for this before we can show any UI /anyway/,
// so it won't cause additional jank.
// TODO(piman): Make this asynchronous.
request.event.Wait();
return request.route_id;
}
void BrowserGpuChannelHostFactory::EstablishGpuChannelOnIO(
EstablishRequest* request,
CauseForGpuLaunch cause_for_gpu_launch) {
GpuProcessHost* host = GpuProcessHost::FromID(gpu_host_id_);
if (!host) {
host = GpuProcessHost::Get(GpuProcessHost::GPU_PROCESS_KIND_SANDBOXED,
cause_for_gpu_launch);
if (!host) {
request->event.Signal();
return;
}
gpu_host_id_ = host->host_id();
}
host->EstablishGpuChannel(
gpu_client_id_,
true,
base::Bind(&BrowserGpuChannelHostFactory::GpuChannelEstablishedOnIO,
request));
}
// static
void BrowserGpuChannelHostFactory::GpuChannelEstablishedOnIO(
EstablishRequest* request,
const IPC::ChannelHandle& channel_handle,
const GPUInfo& gpu_info) {
request->channel_handle = channel_handle;
request->gpu_info = gpu_info;
request->event.Signal();
}
GpuChannelHost* BrowserGpuChannelHostFactory::EstablishGpuChannelSync(
CauseForGpuLaunch cause_for_gpu_launch) {
if (gpu_channel_.get()) {
// Recreate the channel if it has been lost.
if (gpu_channel_->state() == GpuChannelHost::kLost)
gpu_channel_ = NULL;
else
return gpu_channel_.get();
}
// Ensure initialization on the main thread.
GpuDataManagerImpl::GetInstance();
EstablishRequest request;
GetIOLoopProxy()->PostTask(
FROM_HERE,
base::Bind(
&BrowserGpuChannelHostFactory::EstablishGpuChannelOnIO,
base::Unretained(this),
&request,
cause_for_gpu_launch));
// We're blocking the UI thread, which is generally undesirable.
// In this case we need to wait for this before we can show any UI /anyway/,
// so it won't cause additional jank.
// TODO(piman): Make this asynchronous.
request.event.Wait();
if (request.channel_handle.name.empty() ||
request.gpu_process_handle == base::kNullProcessHandle)
return NULL;
gpu_channel_ = new GpuChannelHost(this, gpu_host_id_, gpu_client_id_);
gpu_channel_->set_gpu_info(request.gpu_info);
content::GetContentClient()->SetGpuInfo(request.gpu_info);
// Connect to the GPU process if a channel name was received.
gpu_channel_->Connect(request.channel_handle);
return gpu_channel_.get();
}
} // namespace content
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