This is a library for creating and managing user-level threads in C.

It was created as part of the Hebrew University OS course,

and it allows users to create threads, manage their execution, and control their behavior.

The first function that needs to be called is uthread_init(int quantum_usecs).

It initializes the thread library and takes as input the length of a program quantum in microseconds.

To create a new thread, use uthread_spawn(thread_entry_point entry_point).

The thread is added to the end of the READY threads list.

To terminate a thread, use uthread_terminate(int tid).

It terminates the thread with ID tid and deletes it from all relevant control structures.

To block a thread, use uthread_block(int tid).

It blocks the thread with ID tid. The thread may be resumed later using uthread_resume.

See Docs for more information.

To resume a blocked thread, use uthread_resume(int tid).

It resumes a blocked thread with ID tid and moves it to the READY state.

See Docs for more information.

To block the RUNNING thread for a specified number of quantums, use uthread_sleep(int num_quantums).

See Docs for more information.