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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_RASTER_TASK_CATEGORY_H_
#define CC_RASTER_TASK_CATEGORY_H_
#include <cstdint>
namespace cc {
// This enum provides values for TaskGraph::Node::category, which is a uint16_t.
// We don't use an enum class here, as we want to keep TaskGraph::Node::category
// generic, allowing other consumers to provide their own of values.
enum TaskCategory : uint16_t {
// Cannot run at the same time as another non-concurrent task.
TASK_CATEGORY_NONCONCURRENT_FOREGROUND,
// Can run concurrently with other tasks.
TASK_CATEGORY_FOREGROUND,
// Can only start running when there are no foreground tasks to run. May run
// at background thread priority, which means that it may take time to
// complete once it starts running.
TASK_CATEGORY_BACKGROUND,
// Can only start running when there are no foreground tasks to run. Cannot
// run at background thread priority, which means that it takes a normal time
// to complete once it starts running. This is useful for a task that acquires
// resources that must not be held for a long time because they are shared
// with foreground work (e.g. a lock under which heavy work is performed).
TASK_CATEGORY_BACKGROUND_WITH_NORMAL_THREAD_PRIORITY,
LAST_TASK_CATEGORY = TASK_CATEGORY_BACKGROUND_WITH_NORMAL_THREAD_PRIORITY
};
} // namespace cc
#endif // CC_RASTER_TASK_CATEGORY_H_
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