basis/io/backend/unix/multiplexers/run-loop/run-loop.factor

   1 ! Copyright (C) 2008 Slava Pestov.
   2 ! See http://factorcode.org/license.txt for BSD license.
   3 USING: kernel arrays namespaces math accessors alien locals
   4 destructors system threads io.backend.unix.multiplexers
   5 io.backend.unix.multiplexers.kqueue core-foundation
   6 core-foundation.run-loop core-foundation.file-descriptors ;
   7 FROM: alien.c-types => void void* ;
   8 IN: io.backend.unix.multiplexers.run-loop
   9
  10 TUPLE: run-loop-mx kqueue-mx ;
  11
  12 : file-descriptor-callback ( -- callback )
  13     [
  14         2drop
  15         0 mx get-global kqueue-mx>> wait-for-events
  16         enable-all-callbacks
  17         reset-thread-timer
  18         yield
  19     ] CFFileDescriptorCallBack ;
  20
  21 : <run-loop-mx> ( -- mx )
  22     [
  23         <kqueue-mx> |dispose
  24         dup fd>> file-descriptor-callback add-fd-to-run-loop
  25         run-loop-mx boa
  26     ] with-destructors ;
  27
  28 M: run-loop-mx add-input-callback kqueue-mx>> add-input-callback ;
  29 M: run-loop-mx add-output-callback kqueue-mx>> add-output-callback ;
  30 M: run-loop-mx remove-input-callbacks kqueue-mx>> remove-input-callbacks ;
  31 M: run-loop-mx remove-output-callbacks kqueue-mx>> remove-output-callbacks ;
  32
  33 M: run-loop-mx wait-for-events ( nanos mx -- )
  34     swap run-one-iteration [ 0 swap wait-for-events ] [ drop ] if ;