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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_TILES_TILE_TASK_MANAGER_H_
#define CC_TILES_TILE_TASK_MANAGER_H_
#include <stddef.h>
#include <memory>
#include "base/memory/raw_ptr.h"
#include "cc/raster/raster_buffer_provider.h"
#include "cc/raster/task_graph_runner.h"
#include "cc/raster/tile_task.h"
namespace cc {
// This interface provides the wrapper over TaskGraphRunner for scheduling and
// collecting tasks. The client can call CheckForCompletedTasks() at any time to
// process all completed tasks at the moment that have finished running or
// cancelled.
class CC_EXPORT TileTaskManager {
public:
TileTaskManager();
virtual ~TileTaskManager();
// Schedule running of tile tasks in |graph| and all dependencies.
// Previously scheduled tasks that are not in |graph| will be canceled unless
// already running. Once scheduled and if not canceled by next scheduling,
// tasks are guaranteed to run.
virtual void ScheduleTasks(TaskGraph* graph) = 0;
// Signals that an external dependency of `task` has completed.
virtual void ExternalDependencyCompletedForTask(scoped_refptr<TileTask>) = 0;
// Check for completed tasks and call OnTaskCompleted() on them.
virtual void CheckForCompletedTasks() = 0;
// Shutdown after canceling all previously scheduled tasks.
virtual void Shutdown() = 0;
};
class CC_EXPORT TileTaskManagerImpl : public TileTaskManager {
public:
TileTaskManagerImpl(const TileTaskManagerImpl&) = delete;
~TileTaskManagerImpl() override;
TileTaskManagerImpl& operator=(const TileTaskManagerImpl&) = delete;
static std::unique_ptr<TileTaskManagerImpl> Create(
TaskGraphRunner* task_graph_runner,
base::RepeatingCallback<void(scoped_refptr<TileTask>)>
notify_external_dependent);
// Overridden from TileTaskManager:
void ScheduleTasks(TaskGraph* graph) override;
void ExternalDependencyCompletedForTask(scoped_refptr<TileTask>) override;
void CheckForCompletedTasks() override;
void Shutdown() override;
private:
explicit TileTaskManagerImpl(
TaskGraphRunner* task_graph_runner,
base::RepeatingCallback<void(scoped_refptr<TileTask>)>
notify_external_dependent);
raw_ptr<TaskGraphRunner> task_graph_runner_;
base::RepeatingCallback<void(scoped_refptr<TileTask>)>
notify_external_dependent_;
const NamespaceToken namespace_token_;
};
} // namespace cc
#endif // CC_TILES_TILE_TASK_MANAGER_H_
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