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// Copyright 2015 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_RASTER_SYNCHRONOUS_TASK_GRAPH_RUNNER_H_
#define CC_RASTER_SYNCHRONOUS_TASK_GRAPH_RUNNER_H_
#include "cc/raster/task_graph_runner.h"
#include "cc/raster/task_graph_work_queue.h"
namespace cc {
// Implements a TaskGraphRunner which runs synchronously. This runner only runs
// tasks when RunUntilIdle is called.
class CC_EXPORT SynchronousTaskGraphRunner : public TaskGraphRunner {
public:
SynchronousTaskGraphRunner();
~SynchronousTaskGraphRunner() override;
// Overridden from TaskGraphRunner:
NamespaceToken GenerateNamespaceToken() override;
void ScheduleTasks(NamespaceToken token, TaskGraph* graph) override;
void ExternalDependencyCompletedForTask(NamespaceToken token,
scoped_refptr<Task> task) override;
void WaitForTasksToFinishRunning(NamespaceToken token) override;
void CollectCompletedTasks(NamespaceToken token,
Task::Vector* completed_tasks) override;
void RunTasksUntilIdleForTest() override;
// Runs all pending tasks from all namespaces.
void RunUntilIdle();
// For test use only.
bool RunSingleTaskForTesting() { return RunTask(); }
private:
// Returns true if there was a task to run.
bool RunTask();
// Stores the actual tasks to be run, sorted by priority.
TaskGraphWorkQueue work_queue_;
};
} // namespace cc
#endif // CC_RASTER_SYNCHRONOUS_TASK_GRAPH_RUNNER_H_
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