ceph/src/boost/libs/coroutine/README.md

   1 boost.coroutine
   2 ===============
   3
   4 boost.coroutine provides templates for generalized subroutines which allow multiple entry points for
   5 suspending and resuming execution at certain locations. It preserves the local state of execution and
   6 allows re-entering subroutines more than once (useful if state must be kept across function calls).
   7
   8 Coroutines can be viewed as a language-level construct providing a special kind of control flow.
   9
  10 In contrast to threads, which are pre-emptive, coroutines switches are cooperative (programmer controls
  11 when a switch will happen). The kernel is not involved in the coroutine switches.