[Tcl-bugs] [tcl] (Ticket 1350564fff - Change) Inadequate fcopy operation

[<tcl...@tc...>]

Repository: http://core.tcl.tk/tcl

Change Notification For
  [Inadequate fcopy operation]
  Ticket   http://core.tcl.tk/tcl/tktview?name=1350564fffffffffffffffffffffffffffffffff
  Artifact http://core.tcl.tk/tcl/tinfo?name=d4b09244215f4b0c4656002b65e89ea5d434e31a
  On       2014-04-28T20:10:44
  By       ferrieux

Changed Fields
  closedate: 2456776.34079354
  closer:    ferrieux
  icomment:  > BTW, can I multiplex a single source into  > multiple destinations
             with fcopy (as tee(1)  > would do)? Should I be able to?

             Not "out of the box", because async fcopy is a simple-minded "byte
             noria", that essentially spends its life alternating a readable and a
             writable fileevent (in C), guaranteeing no accumulation in memory. The
             noria requires to be alone fiddling with fileevents in that direction,
             otherwise there would be a race on the read side.

             If instead you want to "fork the flow", simply do a single fcopy
             towards a synthetic channel (refchan) that duplicates.
  login:     ferrieux