Probably pthreads. Makes otherwise very tedious things straightforward and uses predicable naming conventions. For longer justification of it being well done, s

Probably pthreads. Makes otherwise very tedious things straightforward and uses predicable naming conventions. For longer justification of it being well done, see https://eli.thegreenplace.net/2010/04/05/pthreads-as-a-case-study-of-good-api-design https://eli.thegreenplace.net/2010/04/05/pthreads-as-a-case-...