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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.
#ifndef CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_
#define CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_
// 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 <string>
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/memory/linked_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/threading/non_thread_safe.h"
#include "content/common/content_export.h"
#include "content/common/message_router.h"
#include "content/public/common/gpu_memory_stats.h"
#include "gpu/config/gpu_info.h"
#include "ipc/ipc_listener.h"
#include "ipc/ipc_sender.h"
#if defined(OS_MACOSX)
struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
#endif
namespace ui {
class LatencyInfo;
}
namespace gfx {
class Size;
}
namespace IPC {
class Message;
}
namespace content {
void RouteToGpuProcessHostUIShimTask(int host_id, const IPC::Message& msg);
class GpuProcessHostUIShim : public IPC::Listener,
public IPC::Sender,
public base::NonThreadSafe {
public:
// Create a GpuProcessHostUIShim with the given ID. The object can be found
// using FromID with the same id.
static GpuProcessHostUIShim* Create(int host_id);
// Destroy the GpuProcessHostUIShim with the given host ID. This can only
// be called on the UI thread. Only the GpuProcessHost should destroy the
// UI shim.
static void Destroy(int host_id, const std::string& message);
// Destroy all remaining GpuProcessHostUIShims.
CONTENT_EXPORT static void DestroyAll();
CONTENT_EXPORT static GpuProcessHostUIShim* FromID(int host_id);
// Get a GpuProcessHostUIShim instance; it doesn't matter which one.
// Return NULL if none has been created.
CONTENT_EXPORT static GpuProcessHostUIShim* GetOneInstance();
// Stops the GPU process.
void StopGpuProcess(const base::Closure& callback);
// IPC::Sender implementation.
bool Send(IPC::Message* msg) override;
// IPC::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.
bool OnMessageReceived(const IPC::Message& message) override;
CONTENT_EXPORT void SimulateRemoveAllContext();
CONTENT_EXPORT void SimulateCrash();
CONTENT_EXPORT void SimulateHang();
private:
explicit GpuProcessHostUIShim(int host_id);
~GpuProcessHostUIShim() override;
// Message handlers.
bool OnControlMessageReceived(const IPC::Message& message);
void OnLogMessage(int level, const std::string& header,
const std::string& message);
void OnGraphicsInfoCollected(const gpu::GPUInfo& gpu_info);
void OnAcceleratedSurfaceInitialized(int32 surface_id, int32 route_id);
#if defined(OS_MACOSX)
void OnAcceleratedSurfaceBuffersSwapped(
const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params);
#endif
void OnVideoMemoryUsageStatsReceived(
const GPUVideoMemoryUsageStats& video_memory_usage_stats);
void OnAddSubscription(int32 process_id, unsigned int target);
void OnRemoveSubscription(int32 process_id, unsigned int target);
// The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
int host_id_;
base::Closure close_callback_;
};
} // namespace content
#endif // CONTENT_BROWSER_GPU_GPU_PROCESS_HOST_UI_SHIM_H_
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