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// Copyright 2013 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_RASTER_PIXEL_BUFFER_TILE_TASK_WORKER_POOL_H_
#define CC_RASTER_PIXEL_BUFFER_TILE_TASK_WORKER_POOL_H_
#include <deque>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "base/values.h"
#include "cc/base/delayed_unique_notifier.h"
#include "cc/output/context_provider.h"
#include "cc/raster/tile_task_runner.h"
#include "cc/raster/tile_task_worker_pool.h"
namespace base {
namespace trace_event {
class ConvertableToTraceFormat;
class TracedValue;
}
}
namespace cc {
class ResourceProvider;
class CC_EXPORT PixelBufferTileTaskWorkerPool : public TileTaskWorkerPool,
public TileTaskRunner,
public TileTaskClient {
public:
~PixelBufferTileTaskWorkerPool() override;
static scoped_ptr<TileTaskWorkerPool> Create(
base::SequencedTaskRunner* task_runner,
TaskGraphRunner* task_graph_runner,
ContextProvider* context_provider,
ResourceProvider* resource_provider,
size_t max_transfer_buffer_usage_bytes);
// Overridden from TileTaskWorkerPool:
TileTaskRunner* AsTileTaskRunner() override;
// Overridden from TileTaskRunner:
void SetClient(TileTaskRunnerClient* client) override;
void Shutdown() override;
void ScheduleTasks(TileTaskQueue* queue) override;
void CheckForCompletedTasks() override;
ResourceFormat GetResourceFormat() const override;
bool GetResourceRequiresSwizzle() const override;
// Overridden from TileTaskClient:
scoped_ptr<RasterBuffer> AcquireBufferForRaster(
const Resource* resource,
uint64_t resource_content_id,
uint64_t previous_content_id) override;
void ReleaseBufferForRaster(scoped_ptr<RasterBuffer> buffer) override;
private:
struct RasterTaskState {
class TaskComparator {
public:
explicit TaskComparator(const RasterTask* task) : task_(task) {}
bool operator()(const RasterTaskState& state) const {
return state.task == task_;
}
private:
const RasterTask* task_;
};
typedef std::vector<RasterTaskState> Vector;
RasterTaskState(RasterTask* task, const TaskSetCollection& task_sets);
enum { UNSCHEDULED, SCHEDULED, UPLOADING, COMPLETED } type;
RasterTask* task;
TaskSetCollection task_sets;
};
typedef std::deque<scoped_refptr<RasterTask>> RasterTaskDeque;
PixelBufferTileTaskWorkerPool(base::SequencedTaskRunner* task_runner,
TaskGraphRunner* task_graph_runner,
ContextProvider* context_provider,
ResourceProvider* resource_provider,
size_t max_transfer_buffer_usage_bytes);
void OnTaskSetFinished(TaskSet task_set);
void FlushUploads();
void CheckForCompletedUploads();
void CheckForCompletedRasterTasks();
void ScheduleMoreTasks();
size_t PendingRasterTaskCount() const;
TaskSetCollection PendingTasks() const;
void CheckForCompletedRasterizerTasks();
const char* StateName() const;
scoped_refptr<base::trace_event::ConvertableToTraceFormat> StateAsValue()
const;
void ThrottleStateAsValueInto(
base::trace_event::TracedValue* throttle_state) const;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
TaskGraphRunner* task_graph_runner_;
const NamespaceToken namespace_token_;
TileTaskRunnerClient* client_;
ContextProvider* context_provider_;
ResourceProvider* resource_provider_;
bool shutdown_;
TileTaskQueue raster_tasks_;
RasterTaskState::Vector raster_task_states_;
RasterTaskDeque raster_tasks_with_pending_upload_;
RasterTask::Vector completed_raster_tasks_;
TileTask::Vector completed_image_decode_tasks_;
size_t scheduled_raster_task_count_;
size_t task_counts_[kNumberOfTaskSets];
size_t bytes_pending_upload_;
size_t max_bytes_pending_upload_;
bool has_performed_uploads_since_last_flush_;
TaskSetCollection should_notify_client_if_no_tasks_are_pending_;
TaskSetCollection task_set_finished_tasks_pending_;
DelayedUniqueNotifier check_for_completed_raster_task_notifier_;
scoped_refptr<TileTask> task_set_finished_tasks_[kNumberOfTaskSets];
// Task graph used when scheduling tasks and vector used to gather
// completed tasks.
TaskGraph graph_;
Task::Vector completed_tasks_;
base::WeakPtrFactory<PixelBufferTileTaskWorkerPool>
task_set_finished_weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(PixelBufferTileTaskWorkerPool);
};
} // namespace cc
#endif // CC_RASTER_PIXEL_BUFFER_TILE_TASK_WORKER_POOL_H_
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