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// Copyright (c) 2010 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 CHROME_BROWSER_GPU_PROCESS_HOST_H_
#define CHROME_BROWSER_GPU_PROCESS_HOST_H_
#pragma once
#include <queue>
#include "base/basictypes.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/browser_child_process_host.h"
#include "chrome/browser/renderer_host/resource_message_filter.h"
#include "chrome/common/gpu_info.h"
#include "gfx/native_widget_types.h"
class CommandBufferProxy;
namespace IPC {
struct ChannelHandle;
class Message;
}
class GpuProcessHost : public BrowserChildProcessHost {
public:
// Getter for the singleton. This will return NULL on failure.
static GpuProcessHost* Get();
// Shutdown routine, which should only be called upon process
// termination.
static void Shutdown();
virtual bool Send(IPC::Message* msg);
// IPC::Channel::Listener implementation.
virtual void OnMessageReceived(const IPC::Message& message);
// Tells the GPU process to create a new channel for communication with a
// renderer. Will asynchronously send message to object with given routing id
// on completion.
void EstablishGpuChannel(int renderer_id,
ResourceMessageFilter* filter);
// Sends a reply message later when the next GpuHostMsg_SynchronizeReply comes
// in.
void Synchronize(IPC::Message* reply,
ResourceMessageFilter* filter);
// Return the stored gpu_info as this class the
// browser's point of contact with the gpu
GPUInfo gpu_info() const;
private:
// Used to queue pending channel requests.
struct ChannelRequest {
explicit ChannelRequest(ResourceMessageFilter* filter)
: filter(filter) {}
// Used to send the reply message back to the renderer.
scoped_refptr<ResourceMessageFilter> filter;
};
// Used to queue pending synchronization requests.
struct SynchronizationRequest {
SynchronizationRequest(IPC::Message* reply,
ResourceMessageFilter* filter)
: reply(reply),
filter(filter) {}
// The delayed reply message which needs to be sent to the
// renderer.
IPC::Message* reply;
// Used to send the reply message back to the renderer.
scoped_refptr<ResourceMessageFilter> filter;
};
GpuProcessHost();
virtual ~GpuProcessHost();
bool EnsureInitialized();
bool Init();
void OnControlMessageReceived(const IPC::Message& message);
// Message handlers.
void OnChannelEstablished(const IPC::ChannelHandle& channel_handle,
const GPUInfo& gpu_info);
void OnSynchronizeReply();
#if defined(OS_LINUX)
void OnGetViewXID(gfx::NativeViewId id, unsigned long* xid);
#endif
void ReplyToRenderer(const IPC::ChannelHandle& channel,
ResourceMessageFilter* filter);
// Copies applicable command line switches from the given |browser_cmd| line
// flags to the output |gpu_cmd| line flags. Not all switches will be
// copied over.
void PropagateBrowserCommandLineToGpu(const CommandLine& browser_cmd,
CommandLine* gpu_cmd) const;
// ResourceDispatcherHost::Receiver implementation:
virtual URLRequestContext* GetRequestContext(
uint32 request_id,
const ViewHostMsg_Resource_Request& request_data);
virtual bool CanShutdown();
bool initialized_;
bool initialized_successfully_;
// GPUInfo class used for collecting gpu stats
GPUInfo gpu_info_;
// These are the channel requests that we have already sent to
// the GPU process, but haven't heard back about yet.
std::queue<ChannelRequest> sent_requests_;
// The pending synchronization requests we need to reply to.
std::queue<SynchronizationRequest> queued_synchronization_replies_;
DISALLOW_COPY_AND_ASSIGN(GpuProcessHost);
};
#endif // CHROME_BROWSER_GPU_PROCESS_HOST_H_
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