2.8 KB · ⇊ 2 parts · ⤓ Micron 2.8 KB · ⤓ HTML 11.1 KB

top

Thread Control Block (TCB) is a data structure in an operating system kernel that contains thread-specific information needed to manage the thread.cite-ref-1[1] The TCB is "the manifestation of a thread in an operating system."

Each thread has a thread control block. An operating system keeps track of the thread control blocks in kernel memory.cite-ref-2[2]

An example of information contained within a TCB is:

• Thread Identifier: Unique id (tid) is assigned to every new thread

• Stack pointer: Points to thread's stack in the process

• Program counter: Points to the current program instruction of the thread

• State of the thread (running, ready, waiting, start, done)

• Thread's register values

• Pointer to the Process control block (PCB) of the process that the thread lives on

The Thread Control Block acts as a library of information about the threads in a system. Specific information is stored in the thread control block highlighting important information about each process.

• See also

• References

• Parallel Thread Execution

• Process control block (PCB)

• Thread Environment Block (TEB)

cite-note-11. ↑ "Thread Control Block in Operating System". GeeksforGeeks. 2019-11-26. Retrieved 2023-09-04.

cite-note-22. ↑ "CS162 - Fall 2014 #7 - Kernel Threads". inst.eecs.berkeley.edu. Archived from the original on 2023-12-07. Retrieved 2023-12-07.