Final answer:
The Thread Control Block does not include global variables of the process, the code of the program itself, shared resources, or user data unrelated to thread management.
Step-by-step explanation:
The Thread Control Block (TCB) is a data structure in operating systems that contains thread-specific information necessary to manage and schedule threads.
A TCB typically includes the thread identifier, processor state, stack pointer, program counter, scheduling information, and pointers to the thread's process control block. A thread has indirect access to non-execution related resources through the PCB of the process to which it belongs.
What is not included in a TCB, however, are global variables of the process, the code of the program itself, shared resources (like files and databases), and user data unrelated to thread management. These elements are generally part of the process's larger execution context rather than being specific to an individual thread.