Method and system for realizing daemon process based on Linux timing task

Abstract

The invention discloses a method for realizing a daemon process based on a Linux timing task. The method comprises the following steps: configuring information of the daemon process in a configuration file of the Linux timing task; starting the daemon process by the Linux timing task according to the information of the configuration file; reading the information of the configuration file and judging if the number of the started daemon process reaches the maximum starting number set by the configuration file; checking the state of a task queue, and if the length of the task queue is more than 0, circularly and continuously reading and processing task data from the task queue by the daemon process. The daemon process provided by the invention dose not reside in the system permanently, dose not occupy system resources all the time and is started by a timing task, and enough processes can be started reasonably according to a task volume to process a to-be-processed task.

Description

technical field [0001] The invention relates to the field of computer operating systems, in particular to a method for realizing a more flexible, reliable and system resource-saving daemon process in a disguised form based on the timing task service provided by the operating system in Linux. Background technique [0002] The daemon process is the Daemon process mentioned by Tongtong, which is a background service process in Linux. It is a long-lived process, usually independent of the controlling terminal, that periodically performs some task or waits for some event to occur. Daemons are often started when the system is booted and terminated when the system is shut down. [0003] Using daemons has the following advantages: [0004] 1. The life cycle is long, you can always process or wait for a certain task, process it if there is a task, and temporarily sleep if there is no task; [0005] 2. A single process can work without other sub-processes. [0006] Because the dae...

AI Technical Summary

Problems solved by technology

[0010] 1. The daemon process has been running in the background of the system. Even if there are no tasks, it will always exist and occupy system resources. Although a single daemon process occupies less system resources when idle, when there are multiple daemon processes on a machine, This is a huge waste of system resources

[0011] 2. Failure to release resources occupied by other services in time

The daemon process is generally associated with other services, such as database services. After the daemon process finishes processing tasks, it needs to store data in the database. Therefore, the daemon process will open some database connections (database connection pool) at the beginning of startup, so that the daemon process This database connection resource will be occupied throughout the entire running life cycle, even if there are no tasks, and resources such as database connection pools are limited, and the daemon process cannot release these resources when idle, causing other services to be unable to obtain them. resource

[0012] 3. The life cycle of the daemon process cannot be guaranteed

After the daemon process dies, the tasks in the task queue will not be processed in time

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