Running two threads at the same time

Question

I want to know if a program can run two threads at the same time (that is basically what it is used for correct?). But if I were to do a system call in one function where it

Answer 1

• If your computer has only a single CPU, you should know, how it can execute more than one thread at the same time.

• In single-processor systems, only a single thread of execution occurs at a given instant. because Single-processor systems support logical concurrency, not physical concurrency.

• On multiprocessor systems, several threads do, in fact, execute at the same time, and physical concurrency is achieved.

• The important feature of multithreaded programs is that they support logical concurrency, not whether physical concurrency is actually achieved.