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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_UI_SHIM_H_
#define CHROME_BROWSER_GPU_PROCESS_HOST_UI_SHIM_H_
#pragma once
// This class lives on the UI thread and supports classes like the
// BackingStoreProxy, which must live on the UI thread. The IO thread
// portion of this class, the GpuProcessHost, is responsible for
// shuttling messages between the browser and GPU processes.
#include "base/callback.h"
#include "base/non_thread_safe.h"
#include "base/scoped_ptr.h"
#include "base/singleton.h"
#include "chrome/common/gpu_info.h"
#include "chrome/common/message_router.h"
#include "ipc/ipc_channel.h"
#include "gfx/native_widget_types.h"
class GpuProcessHostUIShim : public IPC::Channel::Sender,
public IPC::Channel::Listener,
public NonThreadSafe {
public:
// Getter for the singleton. This will return NULL on failure.
static GpuProcessHostUIShim* GetInstance();
int32 GetNextRoutingId();
// IPC::Channel::Sender implementation.
virtual bool Send(IPC::Message* msg);
// IPC::Channel::Listener implementation.
// The GpuProcessHost causes this to be called on the UI thread to
// dispatch the incoming messages from the GPU process, which are
// actually received on the IO thread.
virtual bool OnMessageReceived(const IPC::Message& message);
// See documentation on MessageRouter for AddRoute and RemoveRoute
void AddRoute(int32 routing_id, IPC::Channel::Listener* listener);
void RemoveRoute(int32 routing_id);
// Sends a message to the browser process to collect the information from the
// graphics card.
void CollectGraphicsInfoAsynchronously();
// Tells the GPU process to crash. Useful for testing.
void SendAboutGpuCrash();
// Tells the GPU process to let its main thread enter an infinite loop.
// Useful for testing.
void SendAboutGpuHang();
// Return all known information about the GPU.
const GPUInfo& gpu_info() const;
// Used only in testing. Sets a callback to invoke when GPU info is collected,
// regardless of whether it has been collected already or if it is partial
// or complete info. Set to NULL when the callback should no longer be called.
void set_gpu_info_collected_callback(Callback0::Type* callback) {
gpu_info_collected_callback_.reset(callback);
}
private:
friend struct DefaultSingletonTraits<GpuProcessHostUIShim>;
GpuProcessHostUIShim();
virtual ~GpuProcessHostUIShim();
// Message handlers.
void OnGraphicsInfoCollected(const GPUInfo& gpu_info);
void OnScheduleComposite(int32 renderer_id, int32 render_view_id);
bool OnControlMessageReceived(const IPC::Message& message);
int last_routing_id_;
GPUInfo gpu_info_;
MessageRouter router_;
// Used only in testing. If set, the callback is invoked when the GPU info
// has been collected.
scoped_ptr<Callback0::Type> gpu_info_collected_callback_;
};
#endif // CHROME_BROWSER_GPU_PROCESS_HOST_UI_SHIM_H_
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