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| 1 // Copyright 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "cc/resources/tile_manager.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <limits> | |
| 9 #include <string> | |
| 10 | |
| 11 #include "base/bind.h" | |
| 12 #include "base/json/json_writer.h" | |
| 13 #include "base/logging.h" | |
| 14 #include "base/metrics/histogram.h" | |
| 15 #include "base/trace_event/trace_event_argument.h" | |
| 16 #include "cc/debug/devtools_instrumentation.h" | |
| 17 #include "cc/debug/frame_viewer_instrumentation.h" | |
| 18 #include "cc/debug/traced_value.h" | |
| 19 #include "cc/layers/picture_layer_impl.h" | |
| 20 #include "cc/resources/raster_buffer.h" | |
| 21 #include "cc/resources/rasterizer.h" | |
| 22 #include "cc/resources/tile.h" | |
| 23 #include "cc/resources/tile_task_runner.h" | |
| 24 #include "ui/gfx/geometry/rect_conversions.h" | |
| 25 | |
| 26 namespace cc { | |
| 27 namespace { | |
| 28 | |
| 29 // Flag to indicate whether we should try and detect that | |
| 30 // a tile is of solid color. | |
| 31 const bool kUseColorEstimator = true; | |
| 32 | |
| 33 class RasterTaskImpl : public RasterTask { | |
| 34 public: | |
| 35 RasterTaskImpl( | |
| 36 const Resource* resource, | |
| 37 RasterSource* raster_source, | |
| 38 const gfx::Rect& content_rect, | |
| 39 float contents_scale, | |
| 40 TileResolution tile_resolution, | |
| 41 int layer_id, | |
| 42 const void* tile_id, | |
| 43 int source_frame_number, | |
| 44 bool analyze_picture, | |
| 45 const base::Callback<void(const RasterSource::SolidColorAnalysis&, bool)>& | |
| 46 reply, | |
| 47 ImageDecodeTask::Vector* dependencies) | |
| 48 : RasterTask(resource, dependencies), | |
| 49 raster_source_(raster_source), | |
| 50 content_rect_(content_rect), | |
| 51 contents_scale_(contents_scale), | |
| 52 tile_resolution_(tile_resolution), | |
| 53 layer_id_(layer_id), | |
| 54 tile_id_(tile_id), | |
| 55 source_frame_number_(source_frame_number), | |
| 56 analyze_picture_(analyze_picture), | |
| 57 reply_(reply) {} | |
| 58 | |
| 59 // Overridden from Task: | |
| 60 void RunOnWorkerThread() override { | |
| 61 TRACE_EVENT0("cc", "RasterizerTaskImpl::RunOnWorkerThread"); | |
| 62 | |
| 63 DCHECK(raster_source_.get()); | |
| 64 DCHECK(raster_buffer_); | |
| 65 | |
| 66 if (analyze_picture_) { | |
| 67 Analyze(raster_source_.get()); | |
| 68 if (analysis_.is_solid_color) | |
| 69 return; | |
| 70 } | |
| 71 | |
| 72 Raster(raster_source_.get()); | |
| 73 } | |
| 74 | |
| 75 // Overridden from TileTask: | |
| 76 void ScheduleOnOriginThread(TileTaskClient* client) override { | |
| 77 DCHECK(!raster_buffer_); | |
| 78 raster_buffer_ = client->AcquireBufferForRaster(resource()); | |
| 79 } | |
| 80 void CompleteOnOriginThread(TileTaskClient* client) override { | |
| 81 client->ReleaseBufferForRaster(raster_buffer_.Pass()); | |
| 82 } | |
| 83 void RunReplyOnOriginThread() override { | |
| 84 DCHECK(!raster_buffer_); | |
| 85 reply_.Run(analysis_, !HasFinishedRunning()); | |
| 86 } | |
| 87 | |
| 88 protected: | |
| 89 ~RasterTaskImpl() override { DCHECK(!raster_buffer_); } | |
| 90 | |
| 91 private: | |
| 92 void Analyze(const RasterSource* raster_source) { | |
| 93 frame_viewer_instrumentation::ScopedAnalyzeTask analyze_task( | |
| 94 tile_id_, tile_resolution_, source_frame_number_, layer_id_); | |
| 95 | |
| 96 DCHECK(raster_source); | |
| 97 | |
| 98 raster_source->PerformSolidColorAnalysis(content_rect_, contents_scale_, | |
| 99 &analysis_); | |
| 100 | |
| 101 // Record the solid color prediction. | |
| 102 UMA_HISTOGRAM_BOOLEAN("Renderer4.SolidColorTilesAnalyzed", | |
| 103 analysis_.is_solid_color); | |
| 104 | |
| 105 // Clear the flag if we're not using the estimator. | |
| 106 analysis_.is_solid_color &= kUseColorEstimator; | |
| 107 } | |
| 108 | |
| 109 void Raster(const RasterSource* raster_source) { | |
| 110 frame_viewer_instrumentation::ScopedRasterTask raster_task( | |
| 111 tile_id_, tile_resolution_, source_frame_number_, layer_id_); | |
| 112 | |
| 113 DCHECK(raster_source); | |
| 114 | |
| 115 raster_buffer_->Playback(raster_source_.get(), content_rect_, | |
| 116 contents_scale_); | |
| 117 } | |
| 118 | |
| 119 RasterSource::SolidColorAnalysis analysis_; | |
| 120 scoped_refptr<RasterSource> raster_source_; | |
| 121 gfx::Rect content_rect_; | |
| 122 float contents_scale_; | |
| 123 TileResolution tile_resolution_; | |
| 124 int layer_id_; | |
| 125 const void* tile_id_; | |
| 126 int source_frame_number_; | |
| 127 bool analyze_picture_; | |
| 128 const base::Callback<void(const RasterSource::SolidColorAnalysis&, bool)> | |
| 129 reply_; | |
| 130 scoped_ptr<RasterBuffer> raster_buffer_; | |
| 131 | |
| 132 DISALLOW_COPY_AND_ASSIGN(RasterTaskImpl); | |
| 133 }; | |
| 134 | |
| 135 class ImageDecodeTaskImpl : public ImageDecodeTask { | |
| 136 public: | |
| 137 ImageDecodeTaskImpl(SkPixelRef* pixel_ref, | |
| 138 const base::Callback<void(bool was_canceled)>& reply) | |
| 139 : pixel_ref_(skia::SharePtr(pixel_ref)), | |
| 140 reply_(reply) {} | |
| 141 | |
| 142 // Overridden from Task: | |
| 143 void RunOnWorkerThread() override { | |
| 144 TRACE_EVENT0("cc", "ImageDecodeTaskImpl::RunOnWorkerThread"); | |
| 145 | |
| 146 devtools_instrumentation::ScopedImageDecodeTask image_decode_task( | |
| 147 pixel_ref_.get()); | |
| 148 // This will cause the image referred to by pixel ref to be decoded. | |
| 149 pixel_ref_->lockPixels(); | |
| 150 pixel_ref_->unlockPixels(); | |
| 151 | |
| 152 // Release the reference after decoding image to ensure that it is not | |
| 153 // kept alive unless needed. | |
| 154 pixel_ref_.clear(); | |
| 155 } | |
| 156 | |
| 157 // Overridden from TileTask: | |
| 158 void ScheduleOnOriginThread(TileTaskClient* client) override {} | |
| 159 void CompleteOnOriginThread(TileTaskClient* client) override {} | |
| 160 void RunReplyOnOriginThread() override { reply_.Run(!HasFinishedRunning()); } | |
| 161 | |
| 162 protected: | |
| 163 ~ImageDecodeTaskImpl() override {} | |
| 164 | |
| 165 private: | |
| 166 skia::RefPtr<SkPixelRef> pixel_ref_; | |
| 167 const base::Callback<void(bool was_canceled)> reply_; | |
| 168 | |
| 169 DISALLOW_COPY_AND_ASSIGN(ImageDecodeTaskImpl); | |
| 170 }; | |
| 171 | |
| 172 const char* TaskSetName(TaskSet task_set) { | |
| 173 switch (task_set) { | |
| 174 case TileManager::ALL: | |
| 175 return "ALL"; | |
| 176 case TileManager::REQUIRED_FOR_ACTIVATION: | |
| 177 return "REQUIRED_FOR_ACTIVATION"; | |
| 178 case TileManager::REQUIRED_FOR_DRAW: | |
| 179 return "REQUIRED_FOR_DRAW"; | |
| 180 } | |
| 181 | |
| 182 NOTREACHED(); | |
| 183 return "Invalid TaskSet"; | |
| 184 } | |
| 185 | |
| 186 } // namespace | |
| 187 | |
| 188 RasterTaskCompletionStats::RasterTaskCompletionStats() | |
| 189 : completed_count(0u), canceled_count(0u) {} | |
| 190 | |
| 191 scoped_refptr<base::trace_event::ConvertableToTraceFormat> | |
| 192 RasterTaskCompletionStatsAsValue(const RasterTaskCompletionStats& stats) { | |
| 193 scoped_refptr<base::trace_event::TracedValue> state = | |
| 194 new base::trace_event::TracedValue(); | |
| 195 state->SetInteger("completed_count", stats.completed_count); | |
| 196 state->SetInteger("canceled_count", stats.canceled_count); | |
| 197 return state; | |
| 198 } | |
| 199 | |
| 200 // static | |
| 201 scoped_ptr<TileManager> TileManager::Create( | |
| 202 TileManagerClient* client, | |
| 203 base::SequencedTaskRunner* task_runner, | |
| 204 ResourcePool* resource_pool, | |
| 205 TileTaskRunner* tile_task_runner, | |
| 206 Rasterizer* rasterizer, | |
| 207 size_t scheduled_raster_task_limit) { | |
| 208 return make_scoped_ptr(new TileManager(client, task_runner, resource_pool, | |
| 209 tile_task_runner, rasterizer, | |
| 210 scheduled_raster_task_limit)); | |
| 211 } | |
| 212 | |
| 213 TileManager::TileManager( | |
| 214 TileManagerClient* client, | |
| 215 const scoped_refptr<base::SequencedTaskRunner>& task_runner, | |
| 216 ResourcePool* resource_pool, | |
| 217 TileTaskRunner* tile_task_runner, | |
| 218 Rasterizer* rasterizer, | |
| 219 size_t scheduled_raster_task_limit) | |
| 220 : client_(client), | |
| 221 task_runner_(task_runner), | |
| 222 resource_pool_(resource_pool), | |
| 223 tile_task_runner_(tile_task_runner), | |
| 224 rasterizer_(rasterizer), | |
| 225 scheduled_raster_task_limit_(scheduled_raster_task_limit), | |
| 226 all_tiles_that_need_to_be_rasterized_are_scheduled_(true), | |
| 227 did_check_for_completed_tasks_since_last_schedule_tasks_(true), | |
| 228 did_oom_on_last_assign_(false), | |
| 229 ready_to_activate_notifier_( | |
| 230 task_runner_.get(), | |
| 231 base::Bind(&TileManager::NotifyReadyToActivate, | |
| 232 base::Unretained(this))), | |
| 233 ready_to_draw_notifier_( | |
| 234 task_runner_.get(), | |
| 235 base::Bind(&TileManager::NotifyReadyToDraw, base::Unretained(this))), | |
| 236 ready_to_activate_check_notifier_( | |
| 237 task_runner_.get(), | |
| 238 base::Bind(&TileManager::CheckIfReadyToActivate, | |
| 239 base::Unretained(this))), | |
| 240 ready_to_draw_check_notifier_( | |
| 241 task_runner_.get(), | |
| 242 base::Bind(&TileManager::CheckIfReadyToDraw, base::Unretained(this))), | |
| 243 more_tiles_need_prepare_check_notifier_( | |
| 244 task_runner_.get(), | |
| 245 base::Bind(&TileManager::CheckIfMoreTilesNeedToBePrepared, | |
| 246 base::Unretained(this))), | |
| 247 did_notify_ready_to_activate_(false), | |
| 248 did_notify_ready_to_draw_(false) { | |
| 249 tile_task_runner_->SetClient(this); | |
| 250 } | |
| 251 | |
| 252 TileManager::~TileManager() { | |
| 253 // Reset global state and manage. This should cause | |
| 254 // our memory usage to drop to zero. | |
| 255 global_state_ = GlobalStateThatImpactsTilePriority(); | |
| 256 | |
| 257 TileTaskQueue empty; | |
| 258 tile_task_runner_->ScheduleTasks(&empty); | |
| 259 orphan_raster_tasks_.clear(); | |
| 260 | |
| 261 // This should finish all pending tasks and release any uninitialized | |
| 262 // resources. | |
| 263 tile_task_runner_->Shutdown(); | |
| 264 tile_task_runner_->CheckForCompletedTasks(); | |
| 265 | |
| 266 FreeResourcesForReleasedTiles(); | |
| 267 CleanUpReleasedTiles(); | |
| 268 } | |
| 269 | |
| 270 void TileManager::Release(Tile* tile) { | |
| 271 released_tiles_.push_back(tile); | |
| 272 } | |
| 273 | |
| 274 TaskSetCollection TileManager::TasksThatShouldBeForcedToComplete() const { | |
| 275 TaskSetCollection tasks_that_should_be_forced_to_complete; | |
| 276 if (global_state_.tree_priority != SMOOTHNESS_TAKES_PRIORITY) | |
| 277 tasks_that_should_be_forced_to_complete[REQUIRED_FOR_ACTIVATION] = true; | |
| 278 return tasks_that_should_be_forced_to_complete; | |
| 279 } | |
| 280 | |
| 281 void TileManager::FreeResourcesForReleasedTiles() { | |
| 282 for (std::vector<Tile*>::iterator it = released_tiles_.begin(); | |
| 283 it != released_tiles_.end(); | |
| 284 ++it) { | |
| 285 Tile* tile = *it; | |
| 286 FreeResourcesForTile(tile); | |
| 287 } | |
| 288 } | |
| 289 | |
| 290 void TileManager::CleanUpReleasedTiles() { | |
| 291 std::vector<Tile*>::iterator it = released_tiles_.begin(); | |
| 292 while (it != released_tiles_.end()) { | |
| 293 Tile* tile = *it; | |
| 294 | |
| 295 if (tile->HasRasterTask()) { | |
| 296 ++it; | |
| 297 continue; | |
| 298 } | |
| 299 | |
| 300 DCHECK(!tile->HasResource()); | |
| 301 DCHECK(tiles_.find(tile->id()) != tiles_.end()); | |
| 302 tiles_.erase(tile->id()); | |
| 303 | |
| 304 LayerCountMap::iterator layer_it = | |
| 305 used_layer_counts_.find(tile->layer_id()); | |
| 306 DCHECK_GT(layer_it->second, 0); | |
| 307 if (--layer_it->second == 0) { | |
| 308 used_layer_counts_.erase(layer_it); | |
| 309 image_decode_tasks_.erase(tile->layer_id()); | |
| 310 } | |
| 311 | |
| 312 delete tile; | |
| 313 it = released_tiles_.erase(it); | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 void TileManager::DidFinishRunningTileTasks(TaskSet task_set) { | |
| 318 TRACE_EVENT1("cc", "TileManager::DidFinishRunningTileTasks", "task_set", | |
| 319 TaskSetName(task_set)); | |
| 320 | |
| 321 switch (task_set) { | |
| 322 case ALL: { | |
| 323 bool memory_usage_above_limit = | |
| 324 resource_pool_->total_memory_usage_bytes() > | |
| 325 global_state_.soft_memory_limit_in_bytes; | |
| 326 | |
| 327 if (all_tiles_that_need_to_be_rasterized_are_scheduled_ && | |
| 328 !memory_usage_above_limit) | |
| 329 return; | |
| 330 | |
| 331 more_tiles_need_prepare_check_notifier_.Schedule(); | |
| 332 return; | |
| 333 } | |
| 334 case REQUIRED_FOR_ACTIVATION: | |
| 335 ready_to_activate_check_notifier_.Schedule(); | |
| 336 return; | |
| 337 case REQUIRED_FOR_DRAW: | |
| 338 ready_to_draw_check_notifier_.Schedule(); | |
| 339 return; | |
| 340 } | |
| 341 | |
| 342 NOTREACHED(); | |
| 343 } | |
| 344 | |
| 345 void TileManager::PrepareTiles( | |
| 346 const GlobalStateThatImpactsTilePriority& state) { | |
| 347 TRACE_EVENT0("cc", "TileManager::PrepareTiles"); | |
| 348 | |
| 349 global_state_ = state; | |
| 350 | |
| 351 PrepareTilesMode prepare_tiles_mode = rasterizer_->GetPrepareTilesMode(); | |
| 352 | |
| 353 // TODO(hendrikw): Consider moving some of this code to the rasterizer. | |
| 354 if (prepare_tiles_mode != PrepareTilesMode::PREPARE_NONE) { | |
| 355 // We need to call CheckForCompletedTasks() once in-between each call | |
| 356 // to ScheduleTasks() to prevent canceled tasks from being scheduled. | |
| 357 if (!did_check_for_completed_tasks_since_last_schedule_tasks_) { | |
| 358 tile_task_runner_->CheckForCompletedTasks(); | |
| 359 did_check_for_completed_tasks_since_last_schedule_tasks_ = true; | |
| 360 } | |
| 361 | |
| 362 FreeResourcesForReleasedTiles(); | |
| 363 CleanUpReleasedTiles(); | |
| 364 | |
| 365 TileVector tiles_that_need_to_be_rasterized; | |
| 366 scoped_ptr<RasterTilePriorityQueue> raster_priority_queue( | |
| 367 client_->BuildRasterQueue(global_state_.tree_priority, | |
| 368 RasterTilePriorityQueue::Type::ALL)); | |
| 369 AssignGpuMemoryToTiles(raster_priority_queue.get(), | |
| 370 scheduled_raster_task_limit_, | |
| 371 &tiles_that_need_to_be_rasterized); | |
| 372 | |
| 373 // Inform the client that will likely require a draw if the highest priority | |
| 374 // tile that will be rasterized is required for draw. | |
| 375 client_->SetIsLikelyToRequireADraw( | |
| 376 !tiles_that_need_to_be_rasterized.empty() && | |
| 377 (*tiles_that_need_to_be_rasterized.begin())->required_for_draw()); | |
| 378 | |
| 379 // Schedule tile tasks. | |
| 380 ScheduleTasks(tiles_that_need_to_be_rasterized); | |
| 381 | |
| 382 did_notify_ready_to_activate_ = false; | |
| 383 did_notify_ready_to_draw_ = false; | |
| 384 } else { | |
| 385 if (global_state_.hard_memory_limit_in_bytes == 0) { | |
| 386 resource_pool_->CheckBusyResources(false); | |
| 387 MemoryUsage memory_limit(0, 0); | |
| 388 MemoryUsage memory_usage(resource_pool_->acquired_memory_usage_bytes(), | |
| 389 resource_pool_->acquired_resource_count()); | |
| 390 FreeTileResourcesUntilUsageIsWithinLimit(nullptr, memory_limit, | |
| 391 &memory_usage); | |
| 392 } | |
| 393 | |
| 394 did_notify_ready_to_activate_ = false; | |
| 395 did_notify_ready_to_draw_ = false; | |
| 396 ready_to_activate_notifier_.Schedule(); | |
| 397 ready_to_draw_notifier_.Schedule(); | |
| 398 } | |
| 399 | |
| 400 TRACE_EVENT_INSTANT1("cc", "DidPrepareTiles", TRACE_EVENT_SCOPE_THREAD, | |
| 401 "state", BasicStateAsValue()); | |
| 402 | |
| 403 TRACE_COUNTER_ID1("cc", "unused_memory_bytes", this, | |
| 404 resource_pool_->total_memory_usage_bytes() - | |
| 405 resource_pool_->acquired_memory_usage_bytes()); | |
| 406 } | |
| 407 | |
| 408 void TileManager::SynchronouslyRasterizeTiles( | |
| 409 const GlobalStateThatImpactsTilePriority& state) { | |
| 410 TRACE_EVENT0("cc", "TileManager::SynchronouslyRasterizeTiles"); | |
| 411 | |
| 412 DCHECK(rasterizer_->GetPrepareTilesMode() != | |
| 413 PrepareTilesMode::RASTERIZE_PRIORITIZED_TILES); | |
| 414 | |
| 415 global_state_ = state; | |
| 416 | |
| 417 FreeResourcesForReleasedTiles(); | |
| 418 CleanUpReleasedTiles(); | |
| 419 | |
| 420 scoped_ptr<RasterTilePriorityQueue> required_for_draw_queue( | |
| 421 client_->BuildRasterQueue( | |
| 422 global_state_.tree_priority, | |
| 423 RasterTilePriorityQueue::Type::REQUIRED_FOR_DRAW)); | |
| 424 TileVector tiles_that_need_to_be_rasterized; | |
| 425 AssignGpuMemoryToTiles(required_for_draw_queue.get(), | |
| 426 std::numeric_limits<size_t>::max(), | |
| 427 &tiles_that_need_to_be_rasterized); | |
| 428 | |
| 429 // We must reduce the amount of unused resources before calling | |
| 430 // RunTasks to prevent usage from rising above limits. | |
| 431 resource_pool_->ReduceResourceUsage(); | |
| 432 | |
| 433 // Run and complete all raster task synchronously. | |
| 434 rasterizer_->RasterizeTiles( | |
| 435 tiles_that_need_to_be_rasterized, resource_pool_, | |
| 436 tile_task_runner_->GetResourceFormat(), | |
| 437 base::Bind(&TileManager::UpdateTileDrawInfo, base::Unretained(this))); | |
| 438 | |
| 439 // Use on-demand raster for any required-for-draw tiles that have not been | |
| 440 // assigned memory after reaching a steady memory state. | |
| 441 // TODO(hendrikw): Figure out why this would improve jank on some tests - See | |
| 442 // crbug.com/449288 | |
| 443 required_for_draw_queue = client_->BuildRasterQueue( | |
| 444 global_state_.tree_priority, | |
| 445 RasterTilePriorityQueue::Type::REQUIRED_FOR_DRAW); | |
| 446 | |
| 447 // Change to OOM mode for any tiles that have not been been assigned memory. | |
| 448 // This ensures that we draw even when OOM. | |
| 449 for (; !required_for_draw_queue->IsEmpty(); required_for_draw_queue->Pop()) { | |
| 450 Tile* tile = required_for_draw_queue->Top(); | |
| 451 tile->draw_info().set_oom(); | |
| 452 client_->NotifyTileStateChanged(tile); | |
| 453 } | |
| 454 | |
| 455 TRACE_EVENT_INSTANT1("cc", "DidRasterize", TRACE_EVENT_SCOPE_THREAD, "state", | |
| 456 BasicStateAsValue()); | |
| 457 | |
| 458 TRACE_COUNTER_ID1("cc", "unused_memory_bytes", this, | |
| 459 resource_pool_->total_memory_usage_bytes() - | |
| 460 resource_pool_->acquired_memory_usage_bytes()); | |
| 461 } | |
| 462 | |
| 463 void TileManager::UpdateVisibleTiles( | |
| 464 const GlobalStateThatImpactsTilePriority& state) { | |
| 465 TRACE_EVENT0("cc", "TileManager::UpdateVisibleTiles"); | |
| 466 | |
| 467 tile_task_runner_->CheckForCompletedTasks(); | |
| 468 | |
| 469 DCHECK(rasterizer_); | |
| 470 PrepareTilesMode prepare_tiles_mode = rasterizer_->GetPrepareTilesMode(); | |
| 471 if (prepare_tiles_mode != PrepareTilesMode::RASTERIZE_PRIORITIZED_TILES) | |
| 472 SynchronouslyRasterizeTiles(state); | |
| 473 | |
| 474 did_check_for_completed_tasks_since_last_schedule_tasks_ = true; | |
| 475 | |
| 476 TRACE_EVENT_INSTANT1( | |
| 477 "cc", | |
| 478 "DidUpdateVisibleTiles", | |
| 479 TRACE_EVENT_SCOPE_THREAD, | |
| 480 "stats", | |
| 481 RasterTaskCompletionStatsAsValue(update_visible_tiles_stats_)); | |
| 482 update_visible_tiles_stats_ = RasterTaskCompletionStats(); | |
| 483 } | |
| 484 | |
| 485 scoped_refptr<base::trace_event::ConvertableToTraceFormat> | |
| 486 TileManager::BasicStateAsValue() const { | |
| 487 scoped_refptr<base::trace_event::TracedValue> value = | |
| 488 new base::trace_event::TracedValue(); | |
| 489 BasicStateAsValueInto(value.get()); | |
| 490 return value; | |
| 491 } | |
| 492 | |
| 493 void TileManager::BasicStateAsValueInto( | |
| 494 base::trace_event::TracedValue* state) const { | |
| 495 state->SetInteger("tile_count", tiles_.size()); | |
| 496 state->SetBoolean("did_oom_on_last_assign", did_oom_on_last_assign_); | |
| 497 state->BeginDictionary("global_state"); | |
| 498 global_state_.AsValueInto(state); | |
| 499 state->EndDictionary(); | |
| 500 } | |
| 501 | |
| 502 scoped_ptr<EvictionTilePriorityQueue> | |
| 503 TileManager::FreeTileResourcesUntilUsageIsWithinLimit( | |
| 504 scoped_ptr<EvictionTilePriorityQueue> eviction_priority_queue, | |
| 505 const MemoryUsage& limit, | |
| 506 MemoryUsage* usage) { | |
| 507 while (usage->Exceeds(limit)) { | |
| 508 if (!eviction_priority_queue) { | |
| 509 eviction_priority_queue = | |
| 510 client_->BuildEvictionQueue(global_state_.tree_priority); | |
| 511 } | |
| 512 if (eviction_priority_queue->IsEmpty()) | |
| 513 break; | |
| 514 | |
| 515 Tile* tile = eviction_priority_queue->Top(); | |
| 516 *usage -= MemoryUsage::FromTile(tile); | |
| 517 FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw(tile); | |
| 518 eviction_priority_queue->Pop(); | |
| 519 } | |
| 520 return eviction_priority_queue; | |
| 521 } | |
| 522 | |
| 523 scoped_ptr<EvictionTilePriorityQueue> | |
| 524 TileManager::FreeTileResourcesWithLowerPriorityUntilUsageIsWithinLimit( | |
| 525 scoped_ptr<EvictionTilePriorityQueue> eviction_priority_queue, | |
| 526 const MemoryUsage& limit, | |
| 527 const TilePriority& other_priority, | |
| 528 MemoryUsage* usage) { | |
| 529 while (usage->Exceeds(limit)) { | |
| 530 if (!eviction_priority_queue) { | |
| 531 eviction_priority_queue = | |
| 532 client_->BuildEvictionQueue(global_state_.tree_priority); | |
| 533 } | |
| 534 if (eviction_priority_queue->IsEmpty()) | |
| 535 break; | |
| 536 | |
| 537 Tile* tile = eviction_priority_queue->Top(); | |
| 538 if (!other_priority.IsHigherPriorityThan(tile->combined_priority())) | |
| 539 break; | |
| 540 | |
| 541 *usage -= MemoryUsage::FromTile(tile); | |
| 542 FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw(tile); | |
| 543 eviction_priority_queue->Pop(); | |
| 544 } | |
| 545 return eviction_priority_queue; | |
| 546 } | |
| 547 | |
| 548 bool TileManager::TilePriorityViolatesMemoryPolicy( | |
| 549 const TilePriority& priority) { | |
| 550 switch (global_state_.memory_limit_policy) { | |
| 551 case ALLOW_NOTHING: | |
| 552 return true; | |
| 553 case ALLOW_ABSOLUTE_MINIMUM: | |
| 554 return priority.priority_bin > TilePriority::NOW; | |
| 555 case ALLOW_PREPAINT_ONLY: | |
| 556 return priority.priority_bin > TilePriority::SOON; | |
| 557 case ALLOW_ANYTHING: | |
| 558 return priority.distance_to_visible == | |
| 559 std::numeric_limits<float>::infinity(); | |
| 560 } | |
| 561 NOTREACHED(); | |
| 562 return true; | |
| 563 } | |
| 564 | |
| 565 void TileManager::AssignGpuMemoryToTiles( | |
| 566 RasterTilePriorityQueue* raster_priority_queue, | |
| 567 size_t scheduled_raster_task_limit, | |
| 568 TileVector* tiles_that_need_to_be_rasterized) { | |
| 569 TRACE_EVENT_BEGIN0("cc", "TileManager::AssignGpuMemoryToTiles"); | |
| 570 | |
| 571 // Maintain the list of released resources that can potentially be re-used | |
| 572 // or deleted. If this operation becomes expensive too, only do this after | |
| 573 // some resource(s) was returned. Note that in that case, one also need to | |
| 574 // invalidate when releasing some resource from the pool. | |
| 575 resource_pool_->CheckBusyResources(false); | |
| 576 | |
| 577 // Now give memory out to the tiles until we're out, and build | |
| 578 // the needs-to-be-rasterized queue. | |
| 579 unsigned schedule_priority = 1u; | |
| 580 all_tiles_that_need_to_be_rasterized_are_scheduled_ = true; | |
| 581 bool had_enough_memory_to_schedule_tiles_needed_now = true; | |
| 582 | |
| 583 MemoryUsage hard_memory_limit(global_state_.hard_memory_limit_in_bytes, | |
| 584 global_state_.num_resources_limit); | |
| 585 MemoryUsage soft_memory_limit(global_state_.soft_memory_limit_in_bytes, | |
| 586 global_state_.num_resources_limit); | |
| 587 MemoryUsage memory_usage(resource_pool_->acquired_memory_usage_bytes(), | |
| 588 resource_pool_->acquired_resource_count()); | |
| 589 | |
| 590 scoped_ptr<EvictionTilePriorityQueue> eviction_priority_queue; | |
| 591 for (; !raster_priority_queue->IsEmpty(); raster_priority_queue->Pop()) { | |
| 592 Tile* tile = raster_priority_queue->Top(); | |
| 593 TilePriority priority = tile->combined_priority(); | |
| 594 | |
| 595 if (TilePriorityViolatesMemoryPolicy(priority)) { | |
| 596 TRACE_EVENT_INSTANT0( | |
| 597 "cc", "TileManager::AssignGpuMemory tile violates memory policy", | |
| 598 TRACE_EVENT_SCOPE_THREAD); | |
| 599 break; | |
| 600 } | |
| 601 | |
| 602 // We won't be able to schedule this tile, so break out early. | |
| 603 if (tiles_that_need_to_be_rasterized->size() >= | |
| 604 scheduled_raster_task_limit) { | |
| 605 all_tiles_that_need_to_be_rasterized_are_scheduled_ = false; | |
| 606 break; | |
| 607 } | |
| 608 | |
| 609 TileDrawInfo& draw_info = tile->draw_info(); | |
| 610 tile->scheduled_priority_ = schedule_priority++; | |
| 611 | |
| 612 DCHECK_IMPLIES(draw_info.mode() != TileDrawInfo::OOM_MODE, | |
| 613 !draw_info.IsReadyToDraw()); | |
| 614 | |
| 615 // If the tile already has a raster_task, then the memory used by it is | |
| 616 // already accounted for in memory_usage. Otherwise, we'll have to acquire | |
| 617 // more memory to create a raster task. | |
| 618 MemoryUsage memory_required_by_tile_to_be_scheduled; | |
| 619 if (!tile->raster_task_.get()) { | |
| 620 memory_required_by_tile_to_be_scheduled = MemoryUsage::FromConfig( | |
| 621 tile->desired_texture_size(), tile_task_runner_->GetResourceFormat()); | |
| 622 } | |
| 623 | |
| 624 bool tile_is_needed_now = priority.priority_bin == TilePriority::NOW; | |
| 625 | |
| 626 // This is the memory limit that will be used by this tile. Depending on | |
| 627 // the tile priority, it will be one of hard_memory_limit or | |
| 628 // soft_memory_limit. | |
| 629 MemoryUsage& tile_memory_limit = | |
| 630 tile_is_needed_now ? hard_memory_limit : soft_memory_limit; | |
| 631 | |
| 632 const MemoryUsage& scheduled_tile_memory_limit = | |
| 633 tile_memory_limit - memory_required_by_tile_to_be_scheduled; | |
| 634 eviction_priority_queue = | |
| 635 FreeTileResourcesWithLowerPriorityUntilUsageIsWithinLimit( | |
| 636 eviction_priority_queue.Pass(), scheduled_tile_memory_limit, | |
| 637 priority, &memory_usage); | |
| 638 bool memory_usage_is_within_limit = | |
| 639 !memory_usage.Exceeds(scheduled_tile_memory_limit); | |
| 640 | |
| 641 // If we couldn't fit the tile into our current memory limit, then we're | |
| 642 // done. | |
| 643 if (!memory_usage_is_within_limit) { | |
| 644 if (tile_is_needed_now) | |
| 645 had_enough_memory_to_schedule_tiles_needed_now = false; | |
| 646 all_tiles_that_need_to_be_rasterized_are_scheduled_ = false; | |
| 647 break; | |
| 648 } | |
| 649 | |
| 650 memory_usage += memory_required_by_tile_to_be_scheduled; | |
| 651 tiles_that_need_to_be_rasterized->push_back(tile); | |
| 652 } | |
| 653 | |
| 654 // Note that we should try and further reduce memory in case the above loop | |
| 655 // didn't reduce memory. This ensures that we always release as many resources | |
| 656 // as possible to stay within the memory limit. | |
| 657 eviction_priority_queue = FreeTileResourcesUntilUsageIsWithinLimit( | |
| 658 eviction_priority_queue.Pass(), hard_memory_limit, &memory_usage); | |
| 659 | |
| 660 UMA_HISTOGRAM_BOOLEAN("TileManager.ExceededMemoryBudget", | |
| 661 !had_enough_memory_to_schedule_tiles_needed_now); | |
| 662 did_oom_on_last_assign_ = !had_enough_memory_to_schedule_tiles_needed_now; | |
| 663 | |
| 664 memory_stats_from_last_assign_.total_budget_in_bytes = | |
| 665 global_state_.hard_memory_limit_in_bytes; | |
| 666 memory_stats_from_last_assign_.total_bytes_used = memory_usage.memory_bytes(); | |
| 667 memory_stats_from_last_assign_.had_enough_memory = | |
| 668 had_enough_memory_to_schedule_tiles_needed_now; | |
| 669 | |
| 670 TRACE_EVENT_END2("cc", "TileManager::AssignGpuMemoryToTiles", | |
| 671 "all_tiles_that_need_to_be_rasterized_are_scheduled", | |
| 672 all_tiles_that_need_to_be_rasterized_are_scheduled_, | |
| 673 "had_enough_memory_to_schedule_tiles_needed_now", | |
| 674 had_enough_memory_to_schedule_tiles_needed_now); | |
| 675 } | |
| 676 | |
| 677 void TileManager::FreeResourcesForTile(Tile* tile) { | |
| 678 TileDrawInfo& draw_info = tile->draw_info(); | |
| 679 if (draw_info.resource_) | |
| 680 resource_pool_->ReleaseResource(draw_info.resource_.Pass()); | |
| 681 } | |
| 682 | |
| 683 void TileManager::FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw( | |
| 684 Tile* tile) { | |
| 685 bool was_ready_to_draw = tile->IsReadyToDraw(); | |
| 686 FreeResourcesForTile(tile); | |
| 687 if (was_ready_to_draw) | |
| 688 client_->NotifyTileStateChanged(tile); | |
| 689 } | |
| 690 | |
| 691 void TileManager::ScheduleTasks( | |
| 692 const TileVector& tiles_that_need_to_be_rasterized) { | |
| 693 TRACE_EVENT1("cc", | |
| 694 "TileManager::ScheduleTasks", | |
| 695 "count", | |
| 696 tiles_that_need_to_be_rasterized.size()); | |
| 697 | |
| 698 DCHECK(did_check_for_completed_tasks_since_last_schedule_tasks_); | |
| 699 | |
| 700 raster_queue_.Reset(); | |
| 701 | |
| 702 // Build a new task queue containing all task currently needed. Tasks | |
| 703 // are added in order of priority, highest priority task first. | |
| 704 for (TileVector::const_iterator it = tiles_that_need_to_be_rasterized.begin(); | |
| 705 it != tiles_that_need_to_be_rasterized.end(); | |
| 706 ++it) { | |
| 707 Tile* tile = *it; | |
| 708 TileDrawInfo& draw_info = tile->draw_info(); | |
| 709 | |
| 710 DCHECK(draw_info.requires_resource()); | |
| 711 DCHECK(!draw_info.resource_); | |
| 712 | |
| 713 if (!tile->raster_task_.get()) | |
| 714 tile->raster_task_ = CreateRasterTask(tile); | |
| 715 | |
| 716 TaskSetCollection task_sets; | |
| 717 if (tile->required_for_activation()) | |
| 718 task_sets.set(REQUIRED_FOR_ACTIVATION); | |
| 719 if (tile->required_for_draw()) | |
| 720 task_sets.set(REQUIRED_FOR_DRAW); | |
| 721 task_sets.set(ALL); | |
| 722 raster_queue_.items.push_back( | |
| 723 TileTaskQueue::Item(tile->raster_task_.get(), task_sets)); | |
| 724 } | |
| 725 | |
| 726 // We must reduce the amount of unused resoruces before calling | |
| 727 // ScheduleTasks to prevent usage from rising above limits. | |
| 728 resource_pool_->ReduceResourceUsage(); | |
| 729 | |
| 730 // Schedule running of |raster_queue_|. This replaces any previously | |
| 731 // scheduled tasks and effectively cancels all tasks not present | |
| 732 // in |raster_queue_|. | |
| 733 tile_task_runner_->ScheduleTasks(&raster_queue_); | |
| 734 | |
| 735 // It's now safe to clean up orphan tasks as raster worker pool is not | |
| 736 // allowed to keep around unreferenced raster tasks after ScheduleTasks() has | |
| 737 // been called. | |
| 738 orphan_raster_tasks_.clear(); | |
| 739 | |
| 740 did_check_for_completed_tasks_since_last_schedule_tasks_ = false; | |
| 741 } | |
| 742 | |
| 743 scoped_refptr<ImageDecodeTask> TileManager::CreateImageDecodeTask( | |
| 744 Tile* tile, | |
| 745 SkPixelRef* pixel_ref) { | |
| 746 return make_scoped_refptr(new ImageDecodeTaskImpl( | |
| 747 pixel_ref, | |
| 748 base::Bind(&TileManager::OnImageDecodeTaskCompleted, | |
| 749 base::Unretained(this), | |
| 750 tile->layer_id(), | |
| 751 base::Unretained(pixel_ref)))); | |
| 752 } | |
| 753 | |
| 754 scoped_refptr<RasterTask> TileManager::CreateRasterTask(Tile* tile) { | |
| 755 scoped_ptr<ScopedResource> resource = | |
| 756 resource_pool_->AcquireResource(tile->desired_texture_size(), | |
| 757 tile_task_runner_->GetResourceFormat()); | |
| 758 const ScopedResource* const_resource = resource.get(); | |
| 759 | |
| 760 // Create and queue all image decode tasks that this tile depends on. | |
| 761 ImageDecodeTask::Vector decode_tasks; | |
| 762 PixelRefTaskMap& existing_pixel_refs = image_decode_tasks_[tile->layer_id()]; | |
| 763 std::vector<SkPixelRef*> pixel_refs; | |
| 764 tile->raster_source()->GatherPixelRefs( | |
| 765 tile->content_rect(), tile->contents_scale(), &pixel_refs); | |
| 766 for (SkPixelRef* pixel_ref : pixel_refs) { | |
| 767 uint32_t id = pixel_ref->getGenerationID(); | |
| 768 | |
| 769 // Append existing image decode task if available. | |
| 770 PixelRefTaskMap::iterator decode_task_it = existing_pixel_refs.find(id); | |
| 771 if (decode_task_it != existing_pixel_refs.end()) { | |
| 772 decode_tasks.push_back(decode_task_it->second); | |
| 773 continue; | |
| 774 } | |
| 775 | |
| 776 // Create and append new image decode task for this pixel ref. | |
| 777 scoped_refptr<ImageDecodeTask> decode_task = | |
| 778 CreateImageDecodeTask(tile, pixel_ref); | |
| 779 decode_tasks.push_back(decode_task); | |
| 780 existing_pixel_refs[id] = decode_task; | |
| 781 } | |
| 782 | |
| 783 return make_scoped_refptr(new RasterTaskImpl( | |
| 784 const_resource, tile->raster_source(), tile->content_rect(), | |
| 785 tile->contents_scale(), tile->combined_priority().resolution, | |
| 786 tile->layer_id(), static_cast<const void*>(tile), | |
| 787 tile->source_frame_number(), tile->use_picture_analysis(), | |
| 788 base::Bind(&TileManager::OnRasterTaskCompleted, base::Unretained(this), | |
| 789 tile->id(), base::Passed(&resource)), | |
| 790 &decode_tasks)); | |
| 791 } | |
| 792 | |
| 793 void TileManager::OnImageDecodeTaskCompleted(int layer_id, | |
| 794 SkPixelRef* pixel_ref, | |
| 795 bool was_canceled) { | |
| 796 // If the task was canceled, we need to clean it up | |
| 797 // from |image_decode_tasks_|. | |
| 798 if (!was_canceled) | |
| 799 return; | |
| 800 | |
| 801 LayerPixelRefTaskMap::iterator layer_it = image_decode_tasks_.find(layer_id); | |
| 802 if (layer_it == image_decode_tasks_.end()) | |
| 803 return; | |
| 804 | |
| 805 PixelRefTaskMap& pixel_ref_tasks = layer_it->second; | |
| 806 PixelRefTaskMap::iterator task_it = | |
| 807 pixel_ref_tasks.find(pixel_ref->getGenerationID()); | |
| 808 | |
| 809 if (task_it != pixel_ref_tasks.end()) | |
| 810 pixel_ref_tasks.erase(task_it); | |
| 811 } | |
| 812 | |
| 813 void TileManager::OnRasterTaskCompleted( | |
| 814 Tile::Id tile_id, | |
| 815 scoped_ptr<ScopedResource> resource, | |
| 816 const RasterSource::SolidColorAnalysis& analysis, | |
| 817 bool was_canceled) { | |
| 818 DCHECK(tiles_.find(tile_id) != tiles_.end()); | |
| 819 | |
| 820 Tile* tile = tiles_[tile_id]; | |
| 821 DCHECK(tile->raster_task_.get()); | |
| 822 orphan_raster_tasks_.push_back(tile->raster_task_); | |
| 823 tile->raster_task_ = nullptr; | |
| 824 | |
| 825 if (was_canceled) { | |
| 826 ++update_visible_tiles_stats_.canceled_count; | |
| 827 resource_pool_->ReleaseResource(resource.Pass()); | |
| 828 return; | |
| 829 } | |
| 830 | |
| 831 UpdateTileDrawInfo(tile, resource.Pass(), analysis); | |
| 832 } | |
| 833 | |
| 834 void TileManager::UpdateTileDrawInfo( | |
| 835 Tile* tile, | |
| 836 scoped_ptr<ScopedResource> resource, | |
| 837 const RasterSource::SolidColorAnalysis& analysis) { | |
| 838 TileDrawInfo& draw_info = tile->draw_info(); | |
| 839 | |
| 840 ++update_visible_tiles_stats_.completed_count; | |
| 841 | |
| 842 if (analysis.is_solid_color) { | |
| 843 draw_info.set_solid_color(analysis.solid_color); | |
| 844 if (resource) | |
| 845 resource_pool_->ReleaseResource(resource.Pass()); | |
| 846 } else { | |
| 847 DCHECK(resource); | |
| 848 draw_info.set_use_resource(); | |
| 849 draw_info.resource_ = resource.Pass(); | |
| 850 } | |
| 851 | |
| 852 client_->NotifyTileStateChanged(tile); | |
| 853 } | |
| 854 | |
| 855 scoped_refptr<Tile> TileManager::CreateTile( | |
| 856 RasterSource* raster_source, | |
| 857 const gfx::Size& desired_texture_size, | |
| 858 const gfx::Rect& content_rect, | |
| 859 float contents_scale, | |
| 860 int layer_id, | |
| 861 int source_frame_number, | |
| 862 int flags) { | |
| 863 scoped_refptr<Tile> tile = make_scoped_refptr( | |
| 864 new Tile(this, raster_source, desired_texture_size, content_rect, | |
| 865 contents_scale, layer_id, source_frame_number, flags)); | |
| 866 DCHECK(tiles_.find(tile->id()) == tiles_.end()); | |
| 867 | |
| 868 tiles_[tile->id()] = tile.get(); | |
| 869 used_layer_counts_[tile->layer_id()]++; | |
| 870 return tile; | |
| 871 } | |
| 872 | |
| 873 void TileManager::SetTileTaskRunnerForTesting( | |
| 874 TileTaskRunner* tile_task_runner) { | |
| 875 tile_task_runner_ = tile_task_runner; | |
| 876 tile_task_runner_->SetClient(this); | |
| 877 } | |
| 878 | |
| 879 bool TileManager::AreRequiredTilesReadyToDraw( | |
| 880 RasterTilePriorityQueue::Type type) const { | |
| 881 scoped_ptr<RasterTilePriorityQueue> raster_priority_queue( | |
| 882 client_->BuildRasterQueue(global_state_.tree_priority, type)); | |
| 883 // It is insufficient to check whether the raster queue we constructed is | |
| 884 // empty. The reason for this is that there are situations (rasterize on | |
| 885 // demand) when the tile both needs raster and it's ready to draw. Hence, we | |
| 886 // have to iterate the queue to check whether the required tiles are ready to | |
| 887 // draw. | |
| 888 for (; !raster_priority_queue->IsEmpty(); raster_priority_queue->Pop()) { | |
| 889 if (!raster_priority_queue->Top()->IsReadyToDraw()) | |
| 890 return false; | |
| 891 } | |
| 892 return true; | |
| 893 } | |
| 894 bool TileManager::IsReadyToActivate() const { | |
| 895 TRACE_EVENT0("cc", "TileManager::IsReadyToActivate"); | |
| 896 return AreRequiredTilesReadyToDraw( | |
| 897 RasterTilePriorityQueue::Type::REQUIRED_FOR_ACTIVATION); | |
| 898 } | |
| 899 | |
| 900 bool TileManager::IsReadyToDraw() const { | |
| 901 TRACE_EVENT0("cc", "TileManager::IsReadyToDraw"); | |
| 902 return AreRequiredTilesReadyToDraw( | |
| 903 RasterTilePriorityQueue::Type::REQUIRED_FOR_DRAW); | |
| 904 } | |
| 905 | |
| 906 void TileManager::NotifyReadyToActivate() { | |
| 907 TRACE_EVENT0("cc", "TileManager::NotifyReadyToActivate"); | |
| 908 if (did_notify_ready_to_activate_) | |
| 909 return; | |
| 910 client_->NotifyReadyToActivate(); | |
| 911 did_notify_ready_to_activate_ = true; | |
| 912 } | |
| 913 | |
| 914 void TileManager::NotifyReadyToDraw() { | |
| 915 TRACE_EVENT0("cc", "TileManager::NotifyReadyToDraw"); | |
| 916 if (did_notify_ready_to_draw_) | |
| 917 return; | |
| 918 client_->NotifyReadyToDraw(); | |
| 919 did_notify_ready_to_draw_ = true; | |
| 920 } | |
| 921 | |
| 922 void TileManager::CheckIfReadyToActivate() { | |
| 923 TRACE_EVENT0("cc", "TileManager::CheckIfReadyToActivate"); | |
| 924 | |
| 925 tile_task_runner_->CheckForCompletedTasks(); | |
| 926 did_check_for_completed_tasks_since_last_schedule_tasks_ = true; | |
| 927 | |
| 928 if (did_notify_ready_to_activate_) | |
| 929 return; | |
| 930 if (!IsReadyToActivate()) | |
| 931 return; | |
| 932 | |
| 933 NotifyReadyToActivate(); | |
| 934 } | |
| 935 | |
| 936 void TileManager::CheckIfReadyToDraw() { | |
| 937 TRACE_EVENT0("cc", "TileManager::CheckIfReadyToDraw"); | |
| 938 | |
| 939 tile_task_runner_->CheckForCompletedTasks(); | |
| 940 did_check_for_completed_tasks_since_last_schedule_tasks_ = true; | |
| 941 | |
| 942 if (did_notify_ready_to_draw_) | |
| 943 return; | |
| 944 if (!IsReadyToDraw()) | |
| 945 return; | |
| 946 | |
| 947 NotifyReadyToDraw(); | |
| 948 } | |
| 949 | |
| 950 void TileManager::CheckIfMoreTilesNeedToBePrepared() { | |
| 951 tile_task_runner_->CheckForCompletedTasks(); | |
| 952 did_check_for_completed_tasks_since_last_schedule_tasks_ = true; | |
| 953 | |
| 954 // When OOM, keep re-assigning memory until we reach a steady state | |
| 955 // where top-priority tiles are initialized. | |
| 956 TileVector tiles_that_need_to_be_rasterized; | |
| 957 scoped_ptr<RasterTilePriorityQueue> raster_priority_queue( | |
| 958 client_->BuildRasterQueue(global_state_.tree_priority, | |
| 959 RasterTilePriorityQueue::Type::ALL)); | |
| 960 AssignGpuMemoryToTiles(raster_priority_queue.get(), | |
| 961 scheduled_raster_task_limit_, | |
| 962 &tiles_that_need_to_be_rasterized); | |
| 963 | |
| 964 // |tiles_that_need_to_be_rasterized| will be empty when we reach a | |
| 965 // steady memory state. Keep scheduling tasks until we reach this state. | |
| 966 if (!tiles_that_need_to_be_rasterized.empty()) { | |
| 967 ScheduleTasks(tiles_that_need_to_be_rasterized); | |
| 968 return; | |
| 969 } | |
| 970 | |
| 971 FreeResourcesForReleasedTiles(); | |
| 972 | |
| 973 resource_pool_->ReduceResourceUsage(); | |
| 974 | |
| 975 // We don't reserve memory for required-for-activation tiles during | |
| 976 // accelerated gestures, so we just postpone activation when we don't | |
| 977 // have these tiles, and activate after the accelerated gesture. | |
| 978 // Likewise if we don't allow any tiles (as is the case when we're | |
| 979 // invisible), if we have tiles that aren't ready, then we shouldn't | |
| 980 // activate as activation can cause checkerboards. | |
| 981 bool wait_for_all_required_tiles = | |
| 982 global_state_.tree_priority == SMOOTHNESS_TAKES_PRIORITY || | |
| 983 global_state_.memory_limit_policy == ALLOW_NOTHING; | |
| 984 | |
| 985 // Mark any required-for-activation tiles that have not been been assigned | |
| 986 // memory after reaching a steady memory state as OOM. This ensures that we | |
| 987 // activate even when OOM. Note that we can't reuse the queue we used for | |
| 988 // AssignGpuMemoryToTiles, since the AssignGpuMemoryToTiles call could have | |
| 989 // evicted some tiles that would not be picked up by the old raster queue. | |
| 990 scoped_ptr<RasterTilePriorityQueue> required_for_activation_queue( | |
| 991 client_->BuildRasterQueue( | |
| 992 global_state_.tree_priority, | |
| 993 RasterTilePriorityQueue::Type::REQUIRED_FOR_ACTIVATION)); | |
| 994 | |
| 995 // If we have tiles left to raster for activation, and we don't allow | |
| 996 // activating without them, then skip activation and return early. | |
| 997 if (!required_for_activation_queue->IsEmpty() && wait_for_all_required_tiles) | |
| 998 return; | |
| 999 | |
| 1000 // Mark required tiles as OOM so that we can activate without them. | |
| 1001 for (; !required_for_activation_queue->IsEmpty(); | |
| 1002 required_for_activation_queue->Pop()) { | |
| 1003 Tile* tile = required_for_activation_queue->Top(); | |
| 1004 tile->draw_info().set_oom(); | |
| 1005 client_->NotifyTileStateChanged(tile); | |
| 1006 } | |
| 1007 | |
| 1008 DCHECK(IsReadyToActivate()); | |
| 1009 ready_to_activate_check_notifier_.Schedule(); | |
| 1010 } | |
| 1011 | |
| 1012 TileManager::MemoryUsage::MemoryUsage() : memory_bytes_(0), resource_count_(0) { | |
| 1013 } | |
| 1014 | |
| 1015 TileManager::MemoryUsage::MemoryUsage(int64 memory_bytes, int resource_count) | |
| 1016 : memory_bytes_(memory_bytes), resource_count_(resource_count) { | |
| 1017 } | |
| 1018 | |
| 1019 // static | |
| 1020 TileManager::MemoryUsage TileManager::MemoryUsage::FromConfig( | |
| 1021 const gfx::Size& size, | |
| 1022 ResourceFormat format) { | |
| 1023 return MemoryUsage(Resource::MemorySizeBytes(size, format), 1); | |
| 1024 } | |
| 1025 | |
| 1026 // static | |
| 1027 TileManager::MemoryUsage TileManager::MemoryUsage::FromTile(const Tile* tile) { | |
| 1028 const TileDrawInfo& draw_info = tile->draw_info(); | |
| 1029 if (draw_info.resource_) { | |
| 1030 return MemoryUsage::FromConfig(draw_info.resource_->size(), | |
| 1031 draw_info.resource_->format()); | |
| 1032 } | |
| 1033 return MemoryUsage(); | |
| 1034 } | |
| 1035 | |
| 1036 TileManager::MemoryUsage& TileManager::MemoryUsage::operator+=( | |
| 1037 const MemoryUsage& other) { | |
| 1038 memory_bytes_ += other.memory_bytes_; | |
| 1039 resource_count_ += other.resource_count_; | |
| 1040 return *this; | |
| 1041 } | |
| 1042 | |
| 1043 TileManager::MemoryUsage& TileManager::MemoryUsage::operator-=( | |
| 1044 const MemoryUsage& other) { | |
| 1045 memory_bytes_ -= other.memory_bytes_; | |
| 1046 resource_count_ -= other.resource_count_; | |
| 1047 return *this; | |
| 1048 } | |
| 1049 | |
| 1050 TileManager::MemoryUsage TileManager::MemoryUsage::operator-( | |
| 1051 const MemoryUsage& other) { | |
| 1052 MemoryUsage result = *this; | |
| 1053 result -= other; | |
| 1054 return result; | |
| 1055 } | |
| 1056 | |
| 1057 bool TileManager::MemoryUsage::Exceeds(const MemoryUsage& limit) const { | |
| 1058 return memory_bytes_ > limit.memory_bytes_ || | |
| 1059 resource_count_ > limit.resource_count_; | |
| 1060 } | |
| 1061 | |
| 1062 } // namespace cc | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1057283003:
Remove parts of //cc we aren't using (Closed)
Base URL: git@github.com:domokit/mojo.git@master