python - Mechanisms for creating long-running process -


are there alternative mechanism(s) creating long-running process besides running infinite loop?

the common pattern seems this:

while true:     # check condition or waiting event     # processing     time.sleep(0.01)

i particularly interested in scenario process acts worker listens event (e.g. waiting on task queue).

what performance characteristics of alternative approaches?

prior art on "wait , process job" thing has been done few different ways:

  • worker processes or threads (see multiprocessing , threading helpful primitives)
  • event-based processing (asyncio, twisted, , few others). asyncronous io library raises event when data on stdin or whatever pipe choose.
  • single-threaded io buffer. depending on desired load characteristics, reasonable worker processes wait on io , process when comes. no fancy queueing. let kernel buffer io , calling process block when gets full.

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