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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_ANDROID_TASK_SCHEDULER_TASK_TRAITS_ANDROID_H_
#define BASE_ANDROID_TASK_SCHEDULER_TASK_TRAITS_ANDROID_H_
// Enum for the TaskTraits types exposed to Java.
//
// A Java counterpart will be generated for this enum.
// GENERATED_JAVA_ENUM_PACKAGE: org.chromium.base.task
enum TaskTraits {
THREAD_POOL_TRAITS_START = 0,
// This task will only be scheduled when machine resources are available. Once
// running, it may be descheduled if higher priority work arrives (in this
// process or another) and its running on a non-critical thread. This is the
// lowest possible priority.
BEST_EFFORT = THREAD_POOL_TRAITS_START,
// This is a lowest-priority task which may block, for example non-urgent
// logging or deletion of temporary files as clean-up.
BEST_EFFORT_MAY_BLOCK = THREAD_POOL_TRAITS_START + 1,
// This task affects UI or responsiveness of future user interactions. It is
// not an immediate response to a user interaction. Most tasks are likely to
// have this priority.
// Examples:
// - Updating the UI to reflect progress on a long task.
// - Loading data that might be shown in the UI after a future user
// interaction.
USER_VISIBLE = THREAD_POOL_TRAITS_START + 2,
// USER_VISIBLE + may block.
USER_VISIBLE_MAY_BLOCK = THREAD_POOL_TRAITS_START + 3,
// This task affects UI immediately after a user interaction.
// Example: Generating data shown in the UI immediately after a click.
USER_BLOCKING = THREAD_POOL_TRAITS_START + 4,
// USER_BLOCKING + may block.
USER_BLOCKING_MAY_BLOCK = THREAD_POOL_TRAITS_START + 5,
THREAD_POOL_TRAITS_END = USER_BLOCKING_MAY_BLOCK,
UI_TRAITS_START = THREAD_POOL_TRAITS_END + 1,
UI_BEST_EFFORT = UI_TRAITS_START,
UI_USER_VISIBLE = UI_TRAITS_START + 1,
UI_USER_BLOCKING = UI_TRAITS_START + 2,
UI_DEFAULT = UI_USER_VISIBLE,
UI_TRAITS_END = UI_USER_BLOCKING
};
#endif // BASE_ANDROID_TASK_SCHEDULER_TASK_TRAITS_ANDROID_H_
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