Similar to Process Control Block(PCB), each thread maintains a table called Thread Control Block(TCB) which contains thread specific information.

Some of the common attributes kept in TCB are:

• Thread ID
• The content of CPU Register
• Program Counter(PC)
• Scheduling Information
• Thread state(status)
• Stack Pointer
• Signal Mask
• Thread Parameters like start function, stack size.
• Pointer to PCB of the process of which thread is part of

Diag-1: PCB-TCB Relation

A relevant posts

• Thread Introduction
• Types of Thread: User-Level and Kernel Threads
• Memory layout of Thread
• Characteristics of a Thread
• Pros and cons of a Thread
• Process Vs Thread
• Thread Programming

Categories: Operating system (OS)