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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
// Copyright 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 CC_RESOURCES_TILE_MANAGER_H_
#define CC_RESOURCES_TILE_MANAGER_H_
#include <queue>
#include <set>
#include <vector>
#include "base/hash_tables.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "cc/debug/rendering_stats_instrumentation.h"
#include "cc/resources/memory_history.h"
#include "cc/resources/picture_pile_impl.h"
#include "cc/resources/raster_worker_pool.h"
#include "cc/resources/resource_pool.h"
#include "cc/resources/tile_priority.h"
namespace cc {
class ResourceProvider;
class Tile;
class TileVersion;
class CC_EXPORT TileManagerClient {
public:
virtual void ScheduleManageTiles() = 0;
virtual void DidInitializeVisibleTile() = 0;
virtual bool
ShouldForceTileUploadsRequiredForActivationToComplete() const = 0;
protected:
virtual ~TileManagerClient() {}
};
// Tile manager classifying tiles into a few basic
// bins:
enum TileManagerBin {
NOW_BIN = 0, // Needed ASAP.
SOON_BIN = 1, // Impl-side version of prepainting.
EVENTUALLY_BIN = 2, // Nice to have, if we've got memory and time.
NEVER_BIN = 3, // Dont bother.
NUM_BINS = 4
// Be sure to update TileManagerBinAsValue when adding new fields.
};
scoped_ptr<base::Value> TileManagerBinAsValue(
TileManagerBin bin);
enum TileManagerBinPriority {
HIGH_PRIORITY_BIN = 0,
LOW_PRIORITY_BIN = 1,
NUM_BIN_PRIORITIES = 2
};
scoped_ptr<base::Value> TileManagerBinPriorityAsValue(
TileManagerBinPriority bin);
// This class manages tiles, deciding which should get rasterized and which
// should no longer have any memory assigned to them. Tile objects are "owned"
// by layers; they automatically register with the manager when they are
// created, and unregister from the manager when they are deleted.
class CC_EXPORT TileManager : public WorkerPoolClient {
public:
typedef base::hash_set<uint32_t> PixelRefSet;
static scoped_ptr<TileManager> Create(
TileManagerClient* client,
ResourceProvider* resource_provider,
size_t num_raster_threads,
bool use_color_estimator,
RenderingStatsInstrumentation* rendering_stats_instrumentation,
bool use_map_image);
virtual ~TileManager();
const GlobalStateThatImpactsTilePriority& GlobalState() const {
return global_state_;
}
void SetGlobalState(const GlobalStateThatImpactsTilePriority& state);
void ManageTiles();
void CheckForCompletedTileUploads();
void AbortPendingTileUploads();
scoped_ptr<base::Value> BasicStateAsValue() const;
scoped_ptr<base::Value> AllTilesAsValue() const;
void GetMemoryStats(size_t* memory_required_bytes,
size_t* memory_nice_to_have_bytes,
size_t* memory_used_bytes) const;
const MemoryHistory::Entry& memory_stats_from_last_assign() const {
return memory_stats_from_last_assign_;
}
// Overridden from WorkerPoolClient:
virtual void DidFinishDispatchingWorkerPoolCompletionCallbacks() OVERRIDE;
void WillModifyTilePriorities() {
ScheduleManageTiles();
}
bool AreTilesRequiredForActivationReady() const {
return tiles_that_need_to_be_initialized_for_activation_.empty();
}
protected:
TileManager(TileManagerClient* client,
ResourceProvider* resource_provider,
scoped_ptr<RasterWorkerPool> raster_worker_pool,
size_t num_raster_threads,
bool use_color_estimator,
RenderingStatsInstrumentation* rendering_stats_instrumentation,
bool use_map_image);
// Methods called by Tile
friend class Tile;
void RegisterTile(Tile* tile);
void UnregisterTile(Tile* tile);
// Virtual for test
virtual void ScheduleTasks();
private:
// Data that is passed to raster tasks.
struct RasterTaskMetadata {
scoped_ptr<base::Value> AsValue() const;
bool is_tile_in_pending_tree_now_bin;
TileResolution tile_resolution;
int layer_id;
const void* tile_id;
int source_frame_number;
};
void AssignBinsToTiles();
void SortTiles();
void AssignGpuMemoryToTiles();
void FreeResourcesForTile(Tile* tile);
void ForceTileUploadToComplete(Tile* tile);
void ScheduleManageTiles() {
if (manage_tiles_pending_)
return;
client_->ScheduleManageTiles();
manage_tiles_pending_ = true;
}
RasterWorkerPool::Task CreateImageDecodeTask(
Tile* tile, skia::LazyPixelRef* pixel_ref);
void OnImageDecodeTaskCompleted(
scoped_refptr<Tile> tile,
uint32_t pixel_ref_id,
bool was_canceled);
RasterTaskMetadata GetRasterTaskMetadata(const Tile& tile) const;
RasterWorkerPool::Task CreateRasterTask(Tile* tile);
void OnRasterTaskCompleted(
scoped_refptr<Tile> tile,
scoped_ptr<ResourcePool::Resource> resource,
PicturePileImpl::Analysis* analysis,
bool was_canceled);
void DidFinishTileInitialization(Tile* tile);
void DidTileTreeBinChange(Tile* tile,
TileManagerBin new_tree_bin,
WhichTree tree);
scoped_ptr<Value> GetMemoryRequirementsAsValue() const;
void AddRequiredTileForActivation(Tile* tile);
static void RunImageDecodeTask(
skia::LazyPixelRef* pixel_ref,
int layer_id,
RenderingStatsInstrumentation* stats_instrumentation);
static void RunAnalyzeAndRasterTask(
const RasterWorkerPool::PictureTask::Callback& analyze_task,
const RasterWorkerPool::PictureTask::Callback& raster_task,
PicturePileImpl* picture_pile);
static void RunAnalyzeTask(
PicturePileImpl::Analysis* analysis,
gfx::Rect rect,
float contents_scale,
bool use_color_estimator,
const RasterTaskMetadata& metadata,
RenderingStatsInstrumentation* stats_instrumentation,
PicturePileImpl* picture_pile);
static void RunRasterTask(
uint8* buffer,
PicturePileImpl::Analysis* analysis,
gfx::Rect rect,
float contents_scale,
const RasterTaskMetadata& metadata,
RenderingStatsInstrumentation* stats_instrumentation,
PicturePileImpl* picture_pile);
TileManagerClient* client_;
scoped_ptr<ResourcePool> resource_pool_;
scoped_ptr<RasterWorkerPool> raster_worker_pool_;
bool manage_tiles_pending_;
GlobalStateThatImpactsTilePriority global_state_;
typedef std::vector<Tile*> TileVector;
TileVector tiles_;
TileVector tiles_that_need_to_be_rasterized_;
typedef std::set<Tile*> TileSet;
TileSet tiles_that_need_to_be_initialized_for_activation_;
typedef base::hash_map<uint32_t, RasterWorkerPool::Task> PixelRefMap;
PixelRefMap pending_decode_tasks_;
typedef std::queue<scoped_refptr<Tile> > TileQueue;
TileQueue tiles_with_pending_upload_;
size_t bytes_pending_upload_;
bool has_performed_uploads_since_last_flush_;
bool ever_exceeded_memory_budget_;
MemoryHistory::Entry memory_stats_from_last_assign_;
RenderingStatsInstrumentation* rendering_stats_instrumentation_;
bool use_color_estimator_;
bool did_initialize_visible_tile_;
size_t max_pending_tasks_;
DISALLOW_COPY_AND_ASSIGN(TileManager);
};
} // namespace cc
#endif // CC_RESOURCES_TILE_MANAGER_H_
|
