blob: 457c4379abcf28595404c00033d6942279548f40 [file] [log] [blame]
// 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.
#include "cc/tiles/tile_manager.h"
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <limits>
#include <string>
#include "base/bind.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/histogram.h"
#include "base/numerics/safe_conversions.h"
#include "base/optional.h"
#include "base/threading/thread_checker.h"
#include "base/trace_event/trace_event_argument.h"
#include "cc/base/histograms.h"
#include "cc/debug/devtools_instrumentation.h"
#include "cc/debug/frame_viewer_instrumentation.h"
#include "cc/debug/traced_value.h"
#include "cc/layers/picture_layer_impl.h"
#include "cc/raster/raster_buffer.h"
#include "cc/raster/task_category.h"
#include "cc/tiles/tile.h"
#include "ui/gfx/geometry/rect_conversions.h"
namespace cc {
namespace {
// Flag to indicate whether we should try and detect that
// a tile is of solid color.
const bool kUseColorEstimator = true;
// TODO(enne): remove this histogram and its monitoring in M58 once there is
// enough new data from the other two raster task timers.
DEFINE_SCOPED_UMA_HISTOGRAM_AREA_TIMER(
ScopedGeneralRasterTaskTimer,
"Compositing.%s.RasterTask.RasterUs",
"Compositing.%s.RasterTask.RasterPixelsPerMs");
DEFINE_SCOPED_UMA_HISTOGRAM_AREA_TIMER(
ScopedSoftwareRasterTaskTimer,
"Compositing.%s.RasterTask.RasterUs.Software",
"Compositing.%s.RasterTask.RasterPixelsPerMs.Software");
DEFINE_SCOPED_UMA_HISTOGRAM_AREA_TIMER(
ScopedGpuRasterTaskTimer,
"Compositing.%s.RasterTask.RasterUs.Gpu",
"Compositing.%s.RasterTask.RasterPixelsPerMs.Gpu");
class ScopedRasterTaskTimer {
public:
explicit ScopedRasterTaskTimer(bool use_gpu_rasterization) {
if (use_gpu_rasterization)
gpu_timer_.emplace();
else
software_timer_.emplace();
}
void SetArea(int area) {
general_timer_.SetArea(area);
if (software_timer_)
software_timer_->SetArea(area);
if (gpu_timer_)
gpu_timer_->SetArea(area);
}
private:
ScopedGeneralRasterTaskTimer general_timer_;
base::Optional<ScopedSoftwareRasterTaskTimer> software_timer_;
base::Optional<ScopedGpuRasterTaskTimer> gpu_timer_;
};
class RasterTaskImpl : public TileTask {
public:
RasterTaskImpl(TileManager* tile_manager,
Tile* tile,
Resource* resource,
scoped_refptr<RasterSource> raster_source,
const RasterSource::PlaybackSettings& playback_settings,
TileResolution tile_resolution,
gfx::Rect invalidated_rect,
uint64_t source_prepare_tiles_id,
std::unique_ptr<RasterBuffer> raster_buffer,
TileTask::Vector* dependencies,
bool is_gpu_rasterization)
: TileTask(!is_gpu_rasterization, dependencies),
tile_manager_(tile_manager),
tile_(tile),
resource_(resource),
raster_source_(std::move(raster_source)),
content_rect_(tile->content_rect()),
invalid_content_rect_(invalidated_rect),
raster_scales_(tile->raster_scales()),
playback_settings_(playback_settings),
tile_resolution_(tile_resolution),
layer_id_(tile->layer_id()),
source_prepare_tiles_id_(source_prepare_tiles_id),
tile_tracing_id_(static_cast<void*>(tile)),
new_content_id_(tile->id()),
source_frame_number_(tile->source_frame_number()),
is_gpu_rasterization_(is_gpu_rasterization),
raster_buffer_(std::move(raster_buffer)) {
DCHECK(origin_thread_checker_.CalledOnValidThread());
}
// Overridden from Task:
void RunOnWorkerThread() override {
TRACE_EVENT1("cc", "RasterizerTaskImpl::RunOnWorkerThread",
"source_prepare_tiles_id", source_prepare_tiles_id_);
DCHECK(raster_source_.get());
DCHECK(raster_buffer_);
frame_viewer_instrumentation::ScopedRasterTask raster_task(
tile_tracing_id_, tile_resolution_, source_frame_number_, layer_id_);
ScopedRasterTaskTimer timer(is_gpu_rasterization_);
timer.SetArea(content_rect_.size().GetArea());
DCHECK(raster_source_);
raster_buffer_->Playback(raster_source_.get(), content_rect_,
invalid_content_rect_, new_content_id_,
raster_scales_, playback_settings_);
}
// Overridden from TileTask:
void OnTaskCompleted() override {
DCHECK(origin_thread_checker_.CalledOnValidThread());
// Here calling state().IsCanceled() is thread-safe, because this task is
// already concluded as FINISHED or CANCELLED and no longer will be worked
// upon by task graph runner.
tile_manager_->OnRasterTaskCompleted(std::move(raster_buffer_), tile_,
resource_, state().IsCanceled());
}
protected:
~RasterTaskImpl() override {
DCHECK(origin_thread_checker_.CalledOnValidThread());
DCHECK(!raster_buffer_);
}
private:
base::ThreadChecker origin_thread_checker_;
// The following members are needed for processing completion of this task on
// origin thread. These are not thread-safe and should be accessed only in
// origin thread. Ensure their access by checking CalledOnValidThread().
TileManager* tile_manager_;
Tile* tile_;
Resource* resource_;
// The following members should be used for running the task.
scoped_refptr<RasterSource> raster_source_;
gfx::Rect content_rect_;
gfx::Rect invalid_content_rect_;
gfx::SizeF raster_scales_;
RasterSource::PlaybackSettings playback_settings_;
TileResolution tile_resolution_;
int layer_id_;
uint64_t source_prepare_tiles_id_;
void* tile_tracing_id_;
uint64_t new_content_id_;
int source_frame_number_;
bool is_gpu_rasterization_;
std::unique_ptr<RasterBuffer> raster_buffer_;
DISALLOW_COPY_AND_ASSIGN(RasterTaskImpl);
};
TaskCategory TaskCategoryForTileTask(TileTask* task,
bool use_foreground_category) {
if (!task->supports_concurrent_execution())
return TASK_CATEGORY_NONCONCURRENT_FOREGROUND;
if (use_foreground_category)
return TASK_CATEGORY_FOREGROUND;
return TASK_CATEGORY_BACKGROUND;
}
bool IsForegroundCategory(uint16_t category) {
TaskCategory enum_category = static_cast<TaskCategory>(category);
switch (enum_category) {
case TASK_CATEGORY_NONCONCURRENT_FOREGROUND:
case TASK_CATEGORY_FOREGROUND:
return true;
case TASK_CATEGORY_BACKGROUND:
return false;
}
DCHECK(false);
return false;
}
// Task priorities that make sure that the task set done tasks run before any
// other remaining tasks.
const size_t kRequiredForActivationDoneTaskPriority = 1u;
const size_t kRequiredForDrawDoneTaskPriority = 2u;
const size_t kAllDoneTaskPriority = 3u;
// For correctness, |kTileTaskPriorityBase| must be greater than
// all task set done task priorities.
size_t kTileTaskPriorityBase = 10u;
void InsertNodeForTask(TaskGraph* graph,
TileTask* task,
uint16_t category,
uint16_t priority,
size_t dependencies) {
DCHECK(std::find_if(graph->nodes.begin(), graph->nodes.end(),
[&task](const TaskGraph::Node& node) {
return node.task == task;
}) == graph->nodes.end());
graph->nodes.emplace_back(task, category, priority, dependencies);
}
void InsertNodeForDecodeTask(TaskGraph* graph,
TileTask* task,
bool use_foreground_category,
uint16_t priority) {
uint32_t dependency_count = 0u;
if (task->dependencies().size()) {
DCHECK_EQ(task->dependencies().size(), 1u);
auto* dependency = task->dependencies()[0].get();
if (!dependency->HasCompleted()) {
InsertNodeForDecodeTask(graph, dependency, use_foreground_category,
priority);
graph->edges.push_back(TaskGraph::Edge(dependency, task));
dependency_count = 1u;
}
}
InsertNodeForTask(graph, task,
TaskCategoryForTileTask(task, use_foreground_category),
priority, dependency_count);
}
void InsertNodesForRasterTask(TaskGraph* graph,
TileTask* raster_task,
const TileTask::Vector& decode_tasks,
size_t priority,
bool use_foreground_category) {
size_t dependencies = 0u;
// Insert image decode tasks.
for (TileTask::Vector::const_iterator it = decode_tasks.begin();
it != decode_tasks.end(); ++it) {
TileTask* decode_task = it->get();
// Skip if already decoded.
if (decode_task->HasCompleted())
continue;
dependencies++;
// Add decode task if it doesn't already exist in graph.
TaskGraph::Node::Vector::iterator decode_it =
std::find_if(graph->nodes.begin(), graph->nodes.end(),
[decode_task](const TaskGraph::Node& node) {
return node.task == decode_task;
});
// In rare circumstances, a background category task may come in before a
// foreground category task. In these cases, upgrade any background category
// dependencies of the current task.
// TODO(ericrk): Task iterators should be updated to avoid this.
// crbug.com/594851
// TODO(ericrk): This should handle dependencies recursively.
// crbug.com/605234
if (decode_it != graph->nodes.end() && use_foreground_category &&
!IsForegroundCategory(decode_it->category)) {
decode_it->category = TASK_CATEGORY_FOREGROUND;
}
if (decode_it == graph->nodes.end()) {
InsertNodeForDecodeTask(graph, decode_task, use_foreground_category,
priority);
}
graph->edges.push_back(TaskGraph::Edge(decode_task, raster_task));
}
InsertNodeForTask(
graph, raster_task,
TaskCategoryForTileTask(raster_task, use_foreground_category), priority,
dependencies);
}
class TaskSetFinishedTaskImpl : public TileTask {
public:
explicit TaskSetFinishedTaskImpl(
base::SequencedTaskRunner* task_runner,
const base::Closure& on_task_set_finished_callback)
: TileTask(true),
task_runner_(task_runner),
on_task_set_finished_callback_(on_task_set_finished_callback) {}
// Overridden from Task:
void RunOnWorkerThread() override {
TRACE_EVENT0("cc", "TaskSetFinishedTaskImpl::RunOnWorkerThread");
TaskSetFinished();
}
// Overridden from TileTask:
void OnTaskCompleted() override {}
protected:
~TaskSetFinishedTaskImpl() override {}
void TaskSetFinished() {
task_runner_->PostTask(FROM_HERE, on_task_set_finished_callback_);
}
private:
base::SequencedTaskRunner* task_runner_;
const base::Closure on_task_set_finished_callback_;
DISALLOW_COPY_AND_ASSIGN(TaskSetFinishedTaskImpl);
};
} // namespace
RasterTaskCompletionStats::RasterTaskCompletionStats()
: completed_count(0u), canceled_count(0u) {}
std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
RasterTaskCompletionStatsAsValue(const RasterTaskCompletionStats& stats) {
std::unique_ptr<base::trace_event::TracedValue> state(
new base::trace_event::TracedValue());
state->SetInteger("completed_count",
base::saturated_cast<int>(stats.completed_count));
state->SetInteger("canceled_count",
base::saturated_cast<int>(stats.canceled_count));
return std::move(state);
}
TileManager::TileManager(TileManagerClient* client,
base::SequencedTaskRunner* task_runner,
size_t scheduled_raster_task_limit,
bool use_partial_raster)
: client_(client),
task_runner_(task_runner),
resource_pool_(nullptr),
tile_task_manager_(nullptr),
scheduled_raster_task_limit_(scheduled_raster_task_limit),
use_partial_raster_(use_partial_raster),
use_gpu_rasterization_(false),
all_tiles_that_need_to_be_rasterized_are_scheduled_(true),
did_check_for_completed_tasks_since_last_schedule_tasks_(true),
did_oom_on_last_assign_(false),
more_tiles_need_prepare_check_notifier_(
task_runner_,
base::Bind(&TileManager::CheckIfMoreTilesNeedToBePrepared,
base::Unretained(this))),
signals_check_notifier_(task_runner_,
base::Bind(&TileManager::CheckAndIssueSignals,
base::Unretained(this))),
has_scheduled_tile_tasks_(false),
prepare_tiles_count_(0u),
next_tile_id_(0u),
task_set_finished_weak_ptr_factory_(this) {}
TileManager::~TileManager() {
FinishTasksAndCleanUp();
}
void TileManager::FinishTasksAndCleanUp() {
if (!tile_task_manager_)
return;
global_state_ = GlobalStateThatImpactsTilePriority();
// This cancels tasks if possible, finishes pending tasks, and release any
// uninitialized resources.
tile_task_manager_->Shutdown();
raster_buffer_provider_->Shutdown();
tile_task_manager_->CheckForCompletedTasks();
// Now that all tasks have been finished, we can clear any |orphan_tasks_|.
orphan_tasks_.clear();
FreeResourcesForReleasedTiles();
CleanUpReleasedTiles();
tile_task_manager_ = nullptr;
resource_pool_ = nullptr;
more_tiles_need_prepare_check_notifier_.Cancel();
signals_check_notifier_.Cancel();
task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
image_manager_.SetImageDecodeController(nullptr);
locked_image_tasks_.clear();
}
void TileManager::SetResources(ResourcePool* resource_pool,
ImageDecodeController* image_decode_controller,
TaskGraphRunner* task_graph_runner,
RasterBufferProvider* raster_buffer_provider,
size_t scheduled_raster_task_limit,
bool use_gpu_rasterization) {
DCHECK(!tile_task_manager_);
DCHECK(task_graph_runner);
use_gpu_rasterization_ = use_gpu_rasterization;
scheduled_raster_task_limit_ = scheduled_raster_task_limit;
resource_pool_ = resource_pool;
image_manager_.SetImageDecodeController(image_decode_controller);
tile_task_manager_ = TileTaskManagerImpl::Create(task_graph_runner);
raster_buffer_provider_ = raster_buffer_provider;
}
void TileManager::Release(Tile* tile) {
released_tiles_.push_back(tile);
}
void TileManager::FreeResourcesForReleasedTiles() {
for (auto* tile : released_tiles_)
FreeResourcesForTile(tile);
}
void TileManager::CleanUpReleasedTiles() {
std::vector<Tile*> tiles_to_retain;
for (auto* tile : released_tiles_) {
if (tile->HasRasterTask()) {
tiles_to_retain.push_back(tile);
continue;
}
DCHECK(!tile->draw_info().has_resource());
DCHECK(tiles_.find(tile->id()) != tiles_.end());
tiles_.erase(tile->id());
delete tile;
}
released_tiles_.swap(tiles_to_retain);
}
void TileManager::DidFinishRunningTileTasksRequiredForActivation() {
TRACE_EVENT0("cc",
"TileManager::DidFinishRunningTileTasksRequiredForActivation");
TRACE_EVENT_ASYNC_STEP_INTO1("cc", "ScheduledTasks", this, "running", "state",
ScheduledTasksStateAsValue());
// TODO(vmpstr): Temporary check to debug crbug.com/642927.
CHECK(tile_task_manager_);
signals_.ready_to_activate = true;
signals_check_notifier_.Schedule();
}
void TileManager::DidFinishRunningTileTasksRequiredForDraw() {
TRACE_EVENT0("cc", "TileManager::DidFinishRunningTileTasksRequiredForDraw");
TRACE_EVENT_ASYNC_STEP_INTO1("cc", "ScheduledTasks", this, "running", "state",
ScheduledTasksStateAsValue());
// TODO(vmpstr): Temporary check to debug crbug.com/642927.
CHECK(tile_task_manager_);
signals_.ready_to_draw = true;
signals_check_notifier_.Schedule();
}
void TileManager::DidFinishRunningAllTileTasks() {
TRACE_EVENT0("cc", "TileManager::DidFinishRunningAllTileTasks");
TRACE_EVENT_ASYNC_END0("cc", "ScheduledTasks", this);
DCHECK(resource_pool_);
DCHECK(tile_task_manager_);
has_scheduled_tile_tasks_ = false;
bool memory_usage_above_limit = resource_pool_->memory_usage_bytes() >
global_state_.soft_memory_limit_in_bytes;
if (all_tiles_that_need_to_be_rasterized_are_scheduled_ &&
!memory_usage_above_limit) {
// TODO(ericrk): We should find a better way to safely handle re-entrant
// notifications than always having to schedule a new task.
// http://crbug.com/498439
// TODO(vmpstr): Temporary check to debug crbug.com/642927.
CHECK(tile_task_manager_);
signals_.all_tile_tasks_completed = true;
signals_check_notifier_.Schedule();
return;
}
more_tiles_need_prepare_check_notifier_.Schedule();
}
bool TileManager::PrepareTiles(
const GlobalStateThatImpactsTilePriority& state) {
++prepare_tiles_count_;
TRACE_EVENT1("cc", "TileManager::PrepareTiles", "prepare_tiles_id",
prepare_tiles_count_);
if (!tile_task_manager_) {
TRACE_EVENT_INSTANT0("cc", "PrepareTiles aborted",
TRACE_EVENT_SCOPE_THREAD);
return false;
}
signals_.reset();
global_state_ = state;
// We need to call CheckForCompletedTasks() once in-between each call
// to ScheduleTasks() to prevent canceled tasks from being scheduled.
if (!did_check_for_completed_tasks_since_last_schedule_tasks_) {
tile_task_manager_->CheckForCompletedTasks();
did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
}
FreeResourcesForReleasedTiles();
CleanUpReleasedTiles();
PrioritizedWorkToSchedule prioritized_work = AssignGpuMemoryToTiles();
// Inform the client that will likely require a draw if the highest priority
// tile that will be rasterized is required for draw.
client_->SetIsLikelyToRequireADraw(
!prioritized_work.tiles_to_raster.empty() &&
prioritized_work.tiles_to_raster.front().tile()->required_for_draw());
// Schedule tile tasks.
ScheduleTasks(prioritized_work);
TRACE_EVENT_INSTANT1("cc", "DidPrepareTiles", TRACE_EVENT_SCOPE_THREAD,
"state", BasicStateAsValue());
return true;
}
void TileManager::Flush() {
TRACE_EVENT0("cc", "TileManager::Flush");
if (!tile_task_manager_) {
TRACE_EVENT_INSTANT0("cc", "Flush aborted", TRACE_EVENT_SCOPE_THREAD);
return;
}
tile_task_manager_->CheckForCompletedTasks();
did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
TRACE_EVENT_INSTANT1("cc", "DidFlush", TRACE_EVENT_SCOPE_THREAD, "stats",
RasterTaskCompletionStatsAsValue(flush_stats_));
flush_stats_ = RasterTaskCompletionStats();
}
std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
TileManager::BasicStateAsValue() const {
std::unique_ptr<base::trace_event::TracedValue> value(
new base::trace_event::TracedValue());
BasicStateAsValueInto(value.get());
return std::move(value);
}
void TileManager::BasicStateAsValueInto(
base::trace_event::TracedValue* state) const {
state->SetInteger("tile_count", base::saturated_cast<int>(tiles_.size()));
state->SetBoolean("did_oom_on_last_assign", did_oom_on_last_assign_);
state->BeginDictionary("global_state");
global_state_.AsValueInto(state);
state->EndDictionary();
}
std::unique_ptr<EvictionTilePriorityQueue>
TileManager::FreeTileResourcesUntilUsageIsWithinLimit(
std::unique_ptr<EvictionTilePriorityQueue> eviction_priority_queue,
const MemoryUsage& limit,
MemoryUsage* usage) {
while (usage->Exceeds(limit)) {
if (!eviction_priority_queue) {
eviction_priority_queue =
client_->BuildEvictionQueue(global_state_.tree_priority);
}
if (eviction_priority_queue->IsEmpty())
break;
Tile* tile = eviction_priority_queue->Top().tile();
*usage -= MemoryUsage::FromTile(tile);
FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw(tile);
eviction_priority_queue->Pop();
}
return eviction_priority_queue;
}
std::unique_ptr<EvictionTilePriorityQueue>
TileManager::FreeTileResourcesWithLowerPriorityUntilUsageIsWithinLimit(
std::unique_ptr<EvictionTilePriorityQueue> eviction_priority_queue,
const MemoryUsage& limit,
const TilePriority& other_priority,
MemoryUsage* usage) {
while (usage->Exceeds(limit)) {
if (!eviction_priority_queue) {
eviction_priority_queue =
client_->BuildEvictionQueue(global_state_.tree_priority);
}
if (eviction_priority_queue->IsEmpty())
break;
const PrioritizedTile& prioritized_tile = eviction_priority_queue->Top();
if (!other_priority.IsHigherPriorityThan(prioritized_tile.priority()))
break;
Tile* tile = prioritized_tile.tile();
*usage -= MemoryUsage::FromTile(tile);
FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw(tile);
eviction_priority_queue->Pop();
}
return eviction_priority_queue;
}
bool TileManager::TilePriorityViolatesMemoryPolicy(
const TilePriority& priority) {
switch (global_state_.memory_limit_policy) {
case ALLOW_NOTHING:
return true;
case ALLOW_ABSOLUTE_MINIMUM:
return priority.priority_bin > TilePriority::NOW;
case ALLOW_PREPAINT_ONLY:
return priority.priority_bin > TilePriority::SOON;
case ALLOW_ANYTHING:
return priority.distance_to_visible ==
std::numeric_limits<float>::infinity();
}
NOTREACHED();
return true;
}
TileManager::PrioritizedWorkToSchedule TileManager::AssignGpuMemoryToTiles() {
TRACE_EVENT_BEGIN0("cc", "TileManager::AssignGpuMemoryToTiles");
DCHECK(resource_pool_);
DCHECK(tile_task_manager_);
// Maintain the list of released resources that can potentially be re-used
// or deleted. If this operation becomes expensive too, only do this after
// some resource(s) was returned. Note that in that case, one also need to
// invalidate when releasing some resource from the pool.
resource_pool_->CheckBusyResources();
// Now give memory out to the tiles until we're out, and build
// the needs-to-be-rasterized queue.
unsigned schedule_priority = 1u;
all_tiles_that_need_to_be_rasterized_are_scheduled_ = true;
bool had_enough_memory_to_schedule_tiles_needed_now = true;
MemoryUsage hard_memory_limit(global_state_.hard_memory_limit_in_bytes,
global_state_.num_resources_limit);
MemoryUsage soft_memory_limit(global_state_.soft_memory_limit_in_bytes,
global_state_.num_resources_limit);
MemoryUsage memory_usage(resource_pool_->memory_usage_bytes(),
resource_pool_->resource_count());
std::unique_ptr<RasterTilePriorityQueue> raster_priority_queue(
client_->BuildRasterQueue(global_state_.tree_priority,
RasterTilePriorityQueue::Type::ALL));
std::unique_ptr<EvictionTilePriorityQueue> eviction_priority_queue;
PrioritizedWorkToSchedule work_to_schedule;
for (; !raster_priority_queue->IsEmpty(); raster_priority_queue->Pop()) {
const PrioritizedTile& prioritized_tile = raster_priority_queue->Top();
Tile* tile = prioritized_tile.tile();
TilePriority priority = prioritized_tile.priority();
if (TilePriorityViolatesMemoryPolicy(priority)) {
TRACE_EVENT_INSTANT0(
"cc", "TileManager::AssignGpuMemory tile violates memory policy",
TRACE_EVENT_SCOPE_THREAD);
break;
}
bool tile_is_needed_now = priority.priority_bin == TilePriority::NOW;
if (!tile->is_solid_color_analysis_performed() &&
tile->use_picture_analysis() && kUseColorEstimator) {
// We analyze for solid color here, to decide to continue
// or drop the tile for scheduling and raster.
// TODO(sohanjg): Check if we could use a shared analysis
// canvas which is reset between tiles.
tile->set_solid_color_analysis_performed(true);
SkColor color = SK_ColorTRANSPARENT;
bool is_solid_color =
prioritized_tile.raster_source()->PerformSolidColorAnalysis(
tile->content_rect(), tile->raster_scales(), &color);
if (is_solid_color) {
tile->draw_info().set_solid_color(color);
tile->draw_info().set_was_ever_ready_to_draw();
if (!tile_is_needed_now)
tile->draw_info().set_was_a_prepaint_tile();
client_->NotifyTileStateChanged(tile);
continue;
}
}
// Prepaint tiles that are far away are only processed for images.
if (!tile->required_for_activation() && !tile->required_for_draw() &&
prioritized_tile.is_process_for_images_only()) {
work_to_schedule.tiles_to_process_for_images.push_back(prioritized_tile);
continue;
}
// We won't be able to schedule this tile, so break out early.
if (work_to_schedule.tiles_to_raster.size() >=
scheduled_raster_task_limit_) {
all_tiles_that_need_to_be_rasterized_are_scheduled_ = false;
break;
}
tile->scheduled_priority_ = schedule_priority++;
DCHECK(tile->draw_info().mode() == TileDrawInfo::OOM_MODE ||
!tile->draw_info().IsReadyToDraw());
// If the tile already has a raster_task, then the memory used by it is
// already accounted for in memory_usage. Otherwise, we'll have to acquire
// more memory to create a raster task.
MemoryUsage memory_required_by_tile_to_be_scheduled;
if (!tile->raster_task_.get()) {
memory_required_by_tile_to_be_scheduled = MemoryUsage::FromConfig(
tile->desired_texture_size(), DetermineResourceFormat(tile));
}
// This is the memory limit that will be used by this tile. Depending on
// the tile priority, it will be one of hard_memory_limit or
// soft_memory_limit.
MemoryUsage& tile_memory_limit =
tile_is_needed_now ? hard_memory_limit : soft_memory_limit;
const MemoryUsage& scheduled_tile_memory_limit =
tile_memory_limit - memory_required_by_tile_to_be_scheduled;
eviction_priority_queue =
FreeTileResourcesWithLowerPriorityUntilUsageIsWithinLimit(
std::move(eviction_priority_queue), scheduled_tile_memory_limit,
priority, &memory_usage);
bool memory_usage_is_within_limit =
!memory_usage.Exceeds(scheduled_tile_memory_limit);
// If we couldn't fit the tile into our current memory limit, then we're
// done.
if (!memory_usage_is_within_limit) {
if (tile_is_needed_now)
had_enough_memory_to_schedule_tiles_needed_now = false;
all_tiles_that_need_to_be_rasterized_are_scheduled_ = false;
break;
}
memory_usage += memory_required_by_tile_to_be_scheduled;
work_to_schedule.tiles_to_raster.push_back(prioritized_tile);
// Since we scheduled the tile, set whether it was a prepaint or not
// assuming that the tile will successfully finish running. We don't have
// priority information at the time the tile completes, so it should be done
// here.
if (!tile_is_needed_now)
tile->draw_info().set_was_a_prepaint_tile();
}
// Note that we should try and further reduce memory in case the above loop
// didn't reduce memory. This ensures that we always release as many resources
// as possible to stay within the memory limit.
eviction_priority_queue = FreeTileResourcesUntilUsageIsWithinLimit(
std::move(eviction_priority_queue), hard_memory_limit, &memory_usage);
UMA_HISTOGRAM_BOOLEAN("TileManager.ExceededMemoryBudget",
!had_enough_memory_to_schedule_tiles_needed_now);
did_oom_on_last_assign_ = !had_enough_memory_to_schedule_tiles_needed_now;
memory_stats_from_last_assign_.total_budget_in_bytes =
global_state_.hard_memory_limit_in_bytes;
memory_stats_from_last_assign_.total_bytes_used = memory_usage.memory_bytes();
DCHECK_GE(memory_stats_from_last_assign_.total_bytes_used, 0);
memory_stats_from_last_assign_.had_enough_memory =
had_enough_memory_to_schedule_tiles_needed_now;
TRACE_EVENT_END2("cc", "TileManager::AssignGpuMemoryToTiles",
"all_tiles_that_need_to_be_rasterized_are_scheduled",
all_tiles_that_need_to_be_rasterized_are_scheduled_,
"had_enough_memory_to_schedule_tiles_needed_now",
had_enough_memory_to_schedule_tiles_needed_now);
return work_to_schedule;
}
void TileManager::FreeResourcesForTile(Tile* tile) {
TileDrawInfo& draw_info = tile->draw_info();
if (draw_info.resource_) {
resource_pool_->ReleaseResource(draw_info.resource_);
draw_info.resource_ = nullptr;
}
}
void TileManager::FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw(
Tile* tile) {
bool was_ready_to_draw = tile->draw_info().IsReadyToDraw();
FreeResourcesForTile(tile);
if (was_ready_to_draw)
client_->NotifyTileStateChanged(tile);
}
void TileManager::ScheduleTasks(
const PrioritizedWorkToSchedule& work_to_schedule) {
const std::vector<PrioritizedTile>& tiles_that_need_to_be_rasterized =
work_to_schedule.tiles_to_raster;
TRACE_EVENT1("cc", "TileManager::ScheduleTasks", "count",
tiles_that_need_to_be_rasterized.size());
DCHECK(did_check_for_completed_tasks_since_last_schedule_tasks_);
if (!has_scheduled_tile_tasks_) {
TRACE_EVENT_ASYNC_BEGIN0("cc", "ScheduledTasks", this);
}
// Cancel existing OnTaskSetFinished callbacks.
task_set_finished_weak_ptr_factory_.InvalidateWeakPtrs();
// Even when scheduling an empty set of tiles, the TTWP does some work, and
// will always trigger a DidFinishRunningTileTasks notification. Because of
// this we unconditionally set |has_scheduled_tile_tasks_| to true.
has_scheduled_tile_tasks_ = true;
// Track the number of dependents for each *_done task.
size_t required_for_activate_count = 0;
size_t required_for_draw_count = 0;
size_t all_count = 0;
size_t priority = kTileTaskPriorityBase;
graph_.Reset();
gfx::ColorSpace color_space = client_->GetTileColorSpace();
scoped_refptr<TileTask> required_for_activation_done_task =
CreateTaskSetFinishedTask(
&TileManager::DidFinishRunningTileTasksRequiredForActivation);
scoped_refptr<TileTask> required_for_draw_done_task =
CreateTaskSetFinishedTask(
&TileManager::DidFinishRunningTileTasksRequiredForDraw);
scoped_refptr<TileTask> all_done_task =
CreateTaskSetFinishedTask(&TileManager::DidFinishRunningAllTileTasks);
// Build a new task queue containing all task currently needed. Tasks
// are added in order of priority, highest priority task first.
for (auto& prioritized_tile : tiles_that_need_to_be_rasterized) {
Tile* tile = prioritized_tile.tile();
DCHECK(tile->draw_info().requires_resource());
DCHECK(!tile->draw_info().resource_);
if (!tile->raster_task_)
tile->raster_task_ = CreateRasterTask(prioritized_tile, color_space);
TileTask* task = tile->raster_task_.get();
DCHECK(!task->HasCompleted());
if (tile->required_for_activation()) {
required_for_activate_count++;
graph_.edges.push_back(
TaskGraph::Edge(task, required_for_activation_done_task.get()));
}
if (tile->required_for_draw()) {
required_for_draw_count++;
graph_.edges.push_back(
TaskGraph::Edge(task, required_for_draw_done_task.get()));
}
all_count++;
graph_.edges.push_back(TaskGraph::Edge(task, all_done_task.get()));
// A tile should use a foreground task cateogry if it is either blocking
// future compositing (required for draw or required for activation), or if
// it has a priority bin of NOW for another reason (low resolution tiles).
bool use_foreground_category =
tile->required_for_draw() || tile->required_for_activation() ||
prioritized_tile.priority().priority_bin == TilePriority::NOW;
InsertNodesForRasterTask(&graph_, task, task->dependencies(), priority++,
use_foreground_category);
}
const std::vector<PrioritizedTile>& tiles_to_process_for_images =
work_to_schedule.tiles_to_process_for_images;
std::vector<DrawImage> new_locked_images;
for (const PrioritizedTile& prioritized_tile : tiles_to_process_for_images) {
Tile* tile = prioritized_tile.tile();
std::vector<DrawImage> images;
prioritized_tile.raster_source()->GetDiscardableImagesInRect(
tile->enclosing_layer_rect(), tile->raster_scales(), &images);
new_locked_images.insert(new_locked_images.end(), images.begin(),
images.end());
}
// TODO(vmpstr): SOON is misleading here, but these images can come from
// several diffent tiles. Rethink what we actually want to trace here. Note
// that I'm using SOON, since it can't be NOW (these are prepaint).
ImageDecodeController::TracingInfo tracing_info(prepare_tiles_count_,
TilePriority::SOON);
std::vector<scoped_refptr<TileTask>> new_locked_image_tasks =
image_manager_.SetPredecodeImages(std::move(new_locked_images),
tracing_info);
for (auto& task : new_locked_image_tasks) {
auto decode_it = std::find_if(graph_.nodes.begin(), graph_.nodes.end(),
[&task](const TaskGraph::Node& node) {
return node.task == task.get();
});
// If this task is already in the graph, then we don't have to insert it.
if (decode_it != graph_.nodes.end())
continue;
InsertNodeForDecodeTask(&graph_, task.get(), false, priority++);
all_count++;
graph_.edges.push_back(TaskGraph::Edge(task.get(), all_done_task.get()));
}
// The old locked images tasks have to stay around until past the
// ScheduleTasks call below, so we do a swap instead of a move.
// TODO(crbug.com/647402): Have the tile_task_manager keep a ref on the tasks,
// since it makes it awkward for the callers to keep refs on tasks that only
// exist within the task graph runner.
locked_image_tasks_.swap(new_locked_image_tasks);
// We must reduce the amount of unused resources before calling
// ScheduleTasks to prevent usage from rising above limits.
resource_pool_->ReduceResourceUsage();
image_manager_.ReduceMemoryUsage();
// Insert nodes for our task completion tasks. We enqueue these using
// NONCONCURRENT_FOREGROUND category this is the highest prioirty category and
// we'd like to run these tasks as soon as possible.
InsertNodeForTask(&graph_, required_for_activation_done_task.get(),
TASK_CATEGORY_NONCONCURRENT_FOREGROUND,
kRequiredForActivationDoneTaskPriority,
required_for_activate_count);
InsertNodeForTask(&graph_, required_for_draw_done_task.get(),
TASK_CATEGORY_NONCONCURRENT_FOREGROUND,
kRequiredForDrawDoneTaskPriority, required_for_draw_count);
InsertNodeForTask(&graph_, all_done_task.get(),
TASK_CATEGORY_NONCONCURRENT_FOREGROUND,
kAllDoneTaskPriority, all_count);
// Synchronize worker with compositor.
raster_buffer_provider_->OrderingBarrier();
// Schedule running of |raster_queue_|. This replaces any previously
// scheduled tasks and effectively cancels all tasks not present
// in |raster_queue_|.
tile_task_manager_->ScheduleTasks(&graph_);
// It's now safe to clean up orphan tasks as raster worker pool is not
// allowed to keep around unreferenced raster tasks after ScheduleTasks() has
// been called.
orphan_tasks_.clear();
// It's also now safe to replace our *_done_task_ tasks.
required_for_activation_done_task_ =
std::move(required_for_activation_done_task);
required_for_draw_done_task_ = std::move(required_for_draw_done_task);
all_done_task_ = std::move(all_done_task);
did_check_for_completed_tasks_since_last_schedule_tasks_ = false;
TRACE_EVENT_ASYNC_STEP_INTO1("cc", "ScheduledTasks", this, "running", "state",
ScheduledTasksStateAsValue());
}
scoped_refptr<TileTask> TileManager::CreateRasterTask(
const PrioritizedTile& prioritized_tile,
const gfx::ColorSpace& color_space) {
Tile* tile = prioritized_tile.tile();
// Get the resource.
uint64_t resource_content_id = 0;
Resource* resource = nullptr;
gfx::Rect invalidated_rect = tile->invalidated_content_rect();
if (UsePartialRaster() && tile->invalidated_id()) {
resource = resource_pool_->TryAcquireResourceForPartialRaster(
tile->id(), tile->invalidated_content_rect(), tile->invalidated_id(),
&invalidated_rect);
}
if (resource) {
resource_content_id = tile->invalidated_id();
DCHECK_EQ(DetermineResourceFormat(tile), resource->format());
} else {
resource = resource_pool_->AcquireResource(tile->desired_texture_size(),
DetermineResourceFormat(tile),
color_space);
}
// For LOW_RESOLUTION tiles, we don't draw or predecode images.
RasterSource::PlaybackSettings playback_settings;
playback_settings.skip_images =
prioritized_tile.priority().resolution == LOW_RESOLUTION;
// Create and queue all image decode tasks that this tile depends on.
TileTask::Vector decode_tasks;
std::vector<DrawImage>& images = scheduled_draw_images_[tile->id()];
images.clear();
if (!playback_settings.skip_images) {
prioritized_tile.raster_source()->GetDiscardableImagesInRect(
tile->enclosing_layer_rect(), tile->raster_scales(), &images);
}
// We can skip the image hijack canvas if we have no images.
playback_settings.use_image_hijack_canvas = !images.empty();
// Get the tasks for the required images.
ImageDecodeController::TracingInfo tracing_info(
prepare_tiles_count_, prioritized_tile.priority().priority_bin);
image_manager_.GetTasksForImagesAndRef(&images, &decode_tasks, tracing_info);
std::unique_ptr<RasterBuffer> raster_buffer =
raster_buffer_provider_->AcquireBufferForRaster(
resource, resource_content_id, tile->invalidated_id());
return make_scoped_refptr(new RasterTaskImpl(
this, tile, resource, prioritized_tile.raster_source(), playback_settings,
prioritized_tile.priority().resolution, invalidated_rect,
prepare_tiles_count_, std::move(raster_buffer), &decode_tasks,
use_gpu_rasterization_));
}
void TileManager::OnRasterTaskCompleted(
std::unique_ptr<RasterBuffer> raster_buffer,
Tile* tile,
Resource* resource,
bool was_canceled) {
DCHECK(tile);
DCHECK(tiles_.find(tile->id()) != tiles_.end());
raster_buffer_provider_->ReleaseBufferForRaster(std::move(raster_buffer));
TileDrawInfo& draw_info = tile->draw_info();
DCHECK(tile->raster_task_.get());
orphan_tasks_.push_back(tile->raster_task_);
tile->raster_task_ = nullptr;
// Unref all the images.
auto images_it = scheduled_draw_images_.find(tile->id());
image_manager_.UnrefImages(images_it->second);
scheduled_draw_images_.erase(images_it);
if (was_canceled) {
++flush_stats_.canceled_count;
resource_pool_->ReleaseResource(resource);
return;
}
resource_pool_->OnContentReplaced(resource->id(), tile->id());
++flush_stats_.completed_count;
draw_info.set_use_resource();
draw_info.resource_ = resource;
draw_info.contents_swizzled_ = DetermineResourceRequiresSwizzle(tile);
DCHECK(draw_info.IsReadyToDraw());
draw_info.set_was_ever_ready_to_draw();
client_->NotifyTileStateChanged(tile);
}
ScopedTilePtr TileManager::CreateTile(const Tile::CreateInfo& info,
int layer_id,
int source_frame_number,
int flags) {
// We need to have a tile task worker pool to do anything meaningful with
// tiles.
DCHECK(tile_task_manager_);
ScopedTilePtr tile(
new Tile(this, info, layer_id, source_frame_number, flags));
DCHECK(tiles_.find(tile->id()) == tiles_.end());
tiles_[tile->id()] = tile.get();
return tile;
}
bool TileManager::AreRequiredTilesReadyToDraw(
RasterTilePriorityQueue::Type type) const {
std::unique_ptr<RasterTilePriorityQueue> raster_priority_queue(
client_->BuildRasterQueue(global_state_.tree_priority, type));
// It is insufficient to check whether the raster queue we constructed is
// empty. The reason for this is that there are situations (rasterize on
// demand) when the tile both needs raster and it's ready to draw. Hence, we
// have to iterate the queue to check whether the required tiles are ready to
// draw.
for (; !raster_priority_queue->IsEmpty(); raster_priority_queue->Pop()) {
if (!raster_priority_queue->Top().tile()->draw_info().IsReadyToDraw())
return false;
}
#if DCHECK_IS_ON()
std::unique_ptr<RasterTilePriorityQueue> all_queue(
client_->BuildRasterQueue(global_state_.tree_priority, type));
for (; !all_queue->IsEmpty(); all_queue->Pop()) {
Tile* tile = all_queue->Top().tile();
DCHECK(!tile->required_for_activation() ||
tile->draw_info().IsReadyToDraw());
}
#endif
return true;
}
bool TileManager::IsReadyToActivate() const {
TRACE_EVENT0("cc", "TileManager::IsReadyToActivate");
return AreRequiredTilesReadyToDraw(
RasterTilePriorityQueue::Type::REQUIRED_FOR_ACTIVATION);
}
bool TileManager::IsReadyToDraw() const {
TRACE_EVENT0("cc", "TileManager::IsReadyToDraw");
return AreRequiredTilesReadyToDraw(
RasterTilePriorityQueue::Type::REQUIRED_FOR_DRAW);
}
void TileManager::CheckAndIssueSignals() {
TRACE_EVENT0("cc", "TileManager::CheckAndIssueSignals");
tile_task_manager_->CheckForCompletedTasks();
did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
// Ready to activate.
if (signals_.ready_to_activate && !signals_.did_notify_ready_to_activate) {
signals_.ready_to_activate = false;
if (IsReadyToActivate()) {
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("cc.debug"),
"TileManager::CheckAndIssueSignals - ready to activate");
signals_.did_notify_ready_to_activate = true;
client_->NotifyReadyToActivate();
}
}
// Ready to draw.
if (signals_.ready_to_draw && !signals_.did_notify_ready_to_draw) {
signals_.ready_to_draw = false;
if (IsReadyToDraw()) {
TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("cc.debug"),
"TileManager::CheckAndIssueSignals - ready to draw");
signals_.did_notify_ready_to_draw = true;
client_->NotifyReadyToDraw();
}
}
// All tile tasks completed.
if (signals_.all_tile_tasks_completed &&
!signals_.did_notify_all_tile_tasks_completed) {
signals_.all_tile_tasks_completed = false;
if (!has_scheduled_tile_tasks_) {
TRACE_EVENT0(
TRACE_DISABLED_BY_DEFAULT("cc.debug"),
"TileManager::CheckAndIssueSignals - all tile tasks completed");
signals_.did_notify_all_tile_tasks_completed = true;
client_->NotifyAllTileTasksCompleted();
}
}
}
void TileManager::CheckIfMoreTilesNeedToBePrepared() {
tile_task_manager_->CheckForCompletedTasks();
did_check_for_completed_tasks_since_last_schedule_tasks_ = true;
// When OOM, keep re-assigning memory until we reach a steady state
// where top-priority tiles are initialized.
PrioritizedWorkToSchedule work_to_schedule = AssignGpuMemoryToTiles();
// Inform the client that will likely require a draw if the highest priority
// tile that will be rasterized is required for draw.
client_->SetIsLikelyToRequireADraw(
!work_to_schedule.tiles_to_raster.empty() &&
work_to_schedule.tiles_to_raster.front().tile()->required_for_draw());
// |tiles_that_need_to_be_rasterized| will be empty when we reach a
// steady memory state. Keep scheduling tasks until we reach this state.
if (!work_to_schedule.tiles_to_raster.empty()) {
ScheduleTasks(work_to_schedule);
return;
}
// If we're not in SMOOTHNESS_TAKES_PRIORITY mode, we should unlock all
// images since we're technically going idle here at least for this frame.
if (global_state_.tree_priority != SMOOTHNESS_TAKES_PRIORITY) {
image_manager_.SetPredecodeImages(std::vector<DrawImage>(),
ImageDecodeController::TracingInfo());
locked_image_tasks_.clear();
}
FreeResourcesForReleasedTiles();
resource_pool_->ReduceResourceUsage();
image_manager_.ReduceMemoryUsage();
// TODO(vmpstr): Temporary check to debug crbug.com/642927.
CHECK(tile_task_manager_);
signals_.all_tile_tasks_completed = true;
signals_check_notifier_.Schedule();
// We don't reserve memory for required-for-activation tiles during
// accelerated gestures, so we just postpone activation when we don't
// have these tiles, and activate after the accelerated gesture.
// Likewise if we don't allow any tiles (as is the case when we're
// invisible), if we have tiles that aren't ready, then we shouldn't
// activate as activation can cause checkerboards.
bool wait_for_all_required_tiles =
global_state_.tree_priority == SMOOTHNESS_TAKES_PRIORITY ||
global_state_.memory_limit_policy == ALLOW_NOTHING;
// If we have tiles left to raster for activation, and we don't allow
// activating without them, then skip activation and return early.
if (wait_for_all_required_tiles)
return;
// Mark any required tiles that have not been been assigned memory after
// reaching a steady memory state as OOM. This ensures that we activate/draw
// even when OOM. Note that we can't reuse the queue we used for
// AssignGpuMemoryToTiles, since the AssignGpuMemoryToTiles call could have
// evicted some tiles that would not be picked up by the old raster queue.
bool need_to_signal_activate = MarkTilesOutOfMemory(client_->BuildRasterQueue(
global_state_.tree_priority,
RasterTilePriorityQueue::Type::REQUIRED_FOR_ACTIVATION));
bool need_to_signal_draw = MarkTilesOutOfMemory(client_->BuildRasterQueue(
global_state_.tree_priority,
RasterTilePriorityQueue::Type::REQUIRED_FOR_DRAW));
// TODO(vmpstr): Temporary check to debug crbug.com/642927.
CHECK(tile_task_manager_);
DCHECK(IsReadyToActivate());
DCHECK(IsReadyToDraw());
signals_.ready_to_activate = need_to_signal_activate;
signals_.ready_to_draw = need_to_signal_draw;
// TODO(ericrk): Investigate why we need to schedule this (not just call it
// inline). http://crbug.com/498439
signals_check_notifier_.Schedule();
}
bool TileManager::MarkTilesOutOfMemory(
std::unique_ptr<RasterTilePriorityQueue> queue) const {
// Mark required tiles as OOM so that we can activate/draw without them.
if (queue->IsEmpty())
return false;
for (; !queue->IsEmpty(); queue->Pop()) {
Tile* tile = queue->Top().tile();
if (tile->draw_info().IsReadyToDraw())
continue;
tile->draw_info().set_oom();
client_->NotifyTileStateChanged(tile);
}
return true;
}
ResourceFormat TileManager::DetermineResourceFormat(const Tile* tile) const {
return raster_buffer_provider_->GetResourceFormat(!tile->is_opaque());
}
bool TileManager::DetermineResourceRequiresSwizzle(const Tile* tile) const {
return raster_buffer_provider_->IsResourceSwizzleRequired(!tile->is_opaque());
}
std::unique_ptr<base::trace_event::ConvertableToTraceFormat>
TileManager::ScheduledTasksStateAsValue() const {
std::unique_ptr<base::trace_event::TracedValue> state(
new base::trace_event::TracedValue());
state->BeginDictionary("tasks_pending");
state->SetBoolean("ready_to_activate", signals_.ready_to_activate);
state->SetBoolean("ready_to_draw", signals_.ready_to_draw);
state->SetBoolean("all_tile_tasks_completed",
signals_.all_tile_tasks_completed);
state->EndDictionary();
return std::move(state);
}
bool TileManager::UsePartialRaster() const {
return use_partial_raster_ &&
raster_buffer_provider_->CanPartialRasterIntoProvidedResource();
}
// Utility function that can be used to create a "Task set finished" task that
// posts |callback| to |task_runner| when run.
scoped_refptr<TileTask> TileManager::CreateTaskSetFinishedTask(
void (TileManager::*callback)()) {
return make_scoped_refptr(new TaskSetFinishedTaskImpl(
task_runner_,
base::Bind(callback, task_set_finished_weak_ptr_factory_.GetWeakPtr())));
}
TileManager::MemoryUsage::MemoryUsage()
: memory_bytes_(0), resource_count_(0) {}
TileManager::MemoryUsage::MemoryUsage(size_t memory_bytes,
size_t resource_count)
: memory_bytes_(static_cast<int64_t>(memory_bytes)),
resource_count_(static_cast<int>(resource_count)) {
// MemoryUsage is constructed using size_ts, since it deals with memory and
// the inputs are typically size_t. However, during the course of usage (in
// particular operator-=) can cause internal values to become negative. Thus,
// member variables are signed.
DCHECK_LE(memory_bytes,
static_cast<size_t>(std::numeric_limits<int64_t>::max()));
DCHECK_LE(resource_count,
static_cast<size_t>(std::numeric_limits<int>::max()));
}
// static
TileManager::MemoryUsage TileManager::MemoryUsage::FromConfig(
const gfx::Size& size,
ResourceFormat format) {
// We can use UncheckedSizeInBytes here since this is used with a tile
// size which is determined by the compositor (it's at most max texture size).
return MemoryUsage(ResourceUtil::UncheckedSizeInBytes<size_t>(size, format),
1);
}
// static
TileManager::MemoryUsage TileManager::MemoryUsage::FromTile(const Tile* tile) {
const TileDrawInfo& draw_info = tile->draw_info();
if (draw_info.resource_) {
return MemoryUsage::FromConfig(draw_info.resource_->size(),
draw_info.resource_->format());
}
return MemoryUsage();
}
TileManager::MemoryUsage& TileManager::MemoryUsage::operator+=(
const MemoryUsage& other) {
memory_bytes_ += other.memory_bytes_;
resource_count_ += other.resource_count_;
return *this;
}
TileManager::MemoryUsage& TileManager::MemoryUsage::operator-=(
const MemoryUsage& other) {
memory_bytes_ -= other.memory_bytes_;
resource_count_ -= other.resource_count_;
return *this;
}
TileManager::MemoryUsage TileManager::MemoryUsage::operator-(
const MemoryUsage& other) {
MemoryUsage result = *this;
result -= other;
return result;
}
bool TileManager::MemoryUsage::Exceeds(const MemoryUsage& limit) const {
return memory_bytes_ > limit.memory_bytes_ ||
resource_count_ > limit.resource_count_;
}
TileManager::Signals::Signals() {
reset();
}
void TileManager::Signals::reset() {
ready_to_activate = false;
did_notify_ready_to_activate = false;
ready_to_draw = false;
did_notify_ready_to_draw = false;
all_tile_tasks_completed = false;
did_notify_all_tile_tasks_completed = false;
}
TileManager::PrioritizedWorkToSchedule::PrioritizedWorkToSchedule() = default;
TileManager::PrioritizedWorkToSchedule::PrioritizedWorkToSchedule(
PrioritizedWorkToSchedule&& other) = default;
TileManager::PrioritizedWorkToSchedule::~PrioritizedWorkToSchedule() = default;
} // namespace cc