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eolas/zk/Threads.md
thomasabishop 09f22d0a65 Autosave: 2024-06-27 06:30:04
2024-06-27 06:30:04 +01:00

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zadl Threads
operating-systems
Wednesday, June 26, 2024

Threads

A process is a running instance of a given program. A program runs sequentially handling one task at a time, however we may need to run certain tasks in parallel.

Think of a program that is downloading a resource from the internet and wants to update the UI at the same time to show the download process.

If the program is strictly sequential, once the program starts the download, the UI is neglected since the CPU time dedicated to the process must be focused elsewhere.

We need the UI update and the download to execute in parallel. This is achieved via operating system threads of execution.

A thread is a schedulable unit of execution within a process. It runs within a process, shares its memory address and can execute any program code loaded within it.

Related notes

Processes