GATE CS 2017 Set 1 Q18 — Processes and Threads

Threads belonging to the same process share the process's address space and resources. Specifically, they share:

• Code section: The executable instructions.
• Data section: This contains global variables and static variables.
• Heap: Dynamically allocated memory (via malloc or new) is shared among all threads of the process.
• OS resources: Open files, signals, and sockets.

However, each thread maintains its own private copy of:

• Program Counter (PC)
• Register set
• Stack: Used for local variables and function call history.

Since both global variables (data section) and the heap are shared among all threads of a process, the correct option is D.