1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// Copyright (c) 2011 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_COMMON_GPU_GPU_CHANNEL_H_
#define CONTENT_COMMON_GPU_GPU_CHANNEL_H_
#pragma once
#include <queue>
#include <set>
#include <string>
#include <vector>
#include "base/id_map.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/process.h"
#include "build/build_config.h"
#include "gpu/command_buffer/service/surface_manager.h"
#include "content/common/gpu/gpu_command_buffer_stub.h"
#include "content/common/gpu/gpu_surface_stub.h"
#include "content/common/message_router.h"
#include "ipc/ipc_sync_channel.h"
#include "ui/gfx/gl/gl_share_group.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/size.h"
class GpuChannelManager;
struct GPUCreateCommandBufferConfig;
class GpuWatchdog;
class TransportTexture;
namespace base {
class MessageLoopProxy;
class WaitableEvent;
}
namespace gfx {
class GLSurface;
}
// Encapsulates an IPC channel between the GPU process and one renderer
// process. On the renderer side there's a corresponding GpuChannelHost.
class GpuChannel : public IPC::Channel::Listener,
public IPC::Message::Sender,
public gpu::SurfaceManager,
public base::RefCountedThreadSafe<GpuChannel> {
public:
// Takes ownership of the renderer process handle.
GpuChannel(GpuChannelManager* gpu_channel_manager,
GpuWatchdog* watchdog,
int renderer_id,
bool software);
virtual ~GpuChannel();
bool Init(base::MessageLoopProxy* io_message_loop,
base::WaitableEvent* shutdown_event);
// Get the GpuChannelManager that owns this channel.
GpuChannelManager* gpu_channel_manager() const {
return gpu_channel_manager_;
}
// Returns the name of the associated IPC channel.
std::string GetChannelName();
#if defined(OS_POSIX)
int GetRendererFileDescriptor();
#endif // defined(OS_POSIX)
base::ProcessHandle renderer_process() const {
return renderer_process_;
}
// IPC::Channel::Listener implementation:
virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
virtual void OnChannelError() OVERRIDE;
virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
// IPC::Message::Sender implementation:
virtual bool Send(IPC::Message* msg);
// Whether this channel is able to handle IPC messages.
bool IsScheduled();
// This is called when a command buffer transitions from the unscheduled
// state to the scheduled state, which potentially means the channel
// transitions from the unscheduled to the scheduled state. When this occurs
// deferred IPC messaged are handled.
void OnScheduled();
void CreateViewCommandBuffer(
gfx::PluginWindowHandle window,
int32 render_view_id,
const GPUCreateCommandBufferConfig& init_params,
int32* route_id);
void ViewResized(int32 command_buffer_route_id);
gfx::GLShareGroup* share_group() const { return share_group_.get(); }
GpuCommandBufferStub* LookupCommandBuffer(int32 route_id);
#if defined(OS_MACOSX)
virtual void AcceleratedSurfaceBuffersSwapped(
int32 route_id, uint64 swap_buffers_count);
void DestroyCommandBufferByViewId(int32 render_view_id);
#endif
void LoseAllContexts();
// Destroy channel and all contained contexts.
void DestroySoon();
// Look up a GLSurface by ID. In this case the ID is the IPC routing ID.
virtual gfx::GLSurface* LookupSurface(int surface_id);
// Get the TransportTexture by ID.
TransportTexture* GetTransportTexture(int32 route_id);
// Destroy the TransportTexture by ID. This method is only called by
// TransportTexture to delete and detach itself.
void DestroyTransportTexture(int32 route_id);
// Generate a route ID guaranteed to be unique for this channel.
int GenerateRouteID();
// Called to add/remove a listener for a particular message routing ID.
void AddRoute(int32 route_id, IPC::Channel::Listener* listener);
void RemoveRoute(int32 route_id);
private:
void OnDestroy();
bool OnControlMessageReceived(const IPC::Message& msg);
void HandleDeferredMessages();
// Message handlers.
void OnInitialize(base::ProcessHandle renderer_process);
void OnCreateOffscreenCommandBuffer(
const gfx::Size& size,
const GPUCreateCommandBufferConfig& init_params,
IPC::Message* reply_message);
void OnDestroyCommandBuffer(int32 route_id, IPC::Message* reply_message);
void OnCreateOffscreenSurface(const gfx::Size& size,
IPC::Message* reply_message);
void OnDestroySurface(int route_id);
void OnCreateTransportTexture(int32 context_route_id, int32 host_id);
void OnEcho(const IPC::Message& message);
// The lifetime of objects of this class is managed by a GpuChannelManager.
// The GpuChannelManager destroy all the GpuChannels that they own when they
// are destroyed. So a raw pointer is safe.
GpuChannelManager* gpu_channel_manager_;
scoped_ptr<IPC::SyncChannel> channel_;
std::queue<IPC::Message*> deferred_messages_;
// The id of the renderer who is on the other side of the channel.
int renderer_id_;
// Handle to the renderer process that is on the other side of the channel.
base::ProcessHandle renderer_process_;
// The process id of the renderer process.
base::ProcessId renderer_pid_;
// Used to implement message routing functionality to CommandBuffer objects
MessageRouter router_;
// The share group that all contexts associated with a particular renderer
// process use.
scoped_refptr<gfx::GLShareGroup> share_group_;
#if defined(ENABLE_GPU)
typedef IDMap<GpuCommandBufferStub, IDMapOwnPointer> StubMap;
StubMap stubs_;
typedef IDMap<GpuSurfaceStub, IDMapOwnPointer> SurfaceMap;
SurfaceMap surfaces_;
#endif // defined (ENABLE_GPU)
// A collection of transport textures created.
typedef IDMap<TransportTexture, IDMapOwnPointer> TransportTextureMap;
TransportTextureMap transport_textures_;
bool log_messages_; // True if we should log sent and received messages.
gpu::gles2::DisallowedExtensions disallowed_extensions_;
GpuWatchdog* watchdog_;
bool software_;
ScopedRunnableMethodFactory<GpuChannel> task_factory_;
DISALLOW_COPY_AND_ASSIGN(GpuChannel);
};
#endif // CONTENT_COMMON_GPU_GPU_CHANNEL_H_
|
