Concurrency

C++ Concurrency

Concepts

• hardware threads: a physical CPU core.
  • hyper-threading (Intel): use one physical core but act as two virtual cores.
• process: the instance of a program executed by one or many threads.
  • a single process can run multiple threads on different cores.
• (software) threads: a light-weight unit to execute programs.
• Multithreading: creating multiple threads in the same process.
• Multiprocessing: forking multiple processes.

We mainly talk about multithreading here.