Thread

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Lightweight execution unit within a process that shares the process’s memory space. Threads enable concurrency within a single process, allowing multiple tasks to run in parallel while sharing heap memory, file descriptors, and other resources.

Key Properties

• Shared Memory
• Lightweight Execution
• Thread Stack

Related

• Process (heavier-weight alternative with isolation)
• Green Threads and Fibers (user-space threads)
• Context Switching (faster between threads than processes)

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operating-systems threads