Coroutines

• A coroutine is similar to a thread in that:
  • It has its own stack
  • It is a line of execution
  • It has its own local variables
  • It has its own instruction pointer
• A coroutine shares global variables
• A set of coroutines in a program are collaborative:
  • Only one is running at a time
  • It suspends execution only when it explicitly requests to be suspended