harmony 鸿蒙Overview of Concurrency in Continuous Tasks

2025-06-06
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Overview of Concurrency in Continuous Tasks

During the implementation of application services, tasks that require extended and irregular execution periods are known as continuous tasks. Executing continuous tasks in the UI main thread may block the thread’s normal operations, leading to performance issues such as freezing and frame loss, which degrade user experience. To avoid this, these independent tasks are typically run in separate background threads.

The following describes typical service scenarios for continuous tasks.

Service Scenario	Description
Periodic sensor data collection	Regularly collecting data of sensors (such as location and speed) that run continuously throughout the application’s operation without interruption.
Listening for socket port information	Continuously monitoring socket data and responding to it at irregular intervals.

These scenarios involve independent continuous tasks with extended execution periods and minimal external interaction. Once dispatched to background threads, these tasks need to respond periodically to retrieve results. Therefore, using TaskPool can streamline development efforts by eliminating the need to manage complex lifecycles and prevent thread overload. You simply need to enqueue these independent continuous tasks into a task pool and wait for the results.