fblocked




NAME
       fblocked  -  Test whether the last input operation exhausted all available
       input

SYNOPSIS
       fblocked channelId


DESCRIPTION
       The fblocked command returns 1 if the most recent  input  operation  on
       channelId  returned  less information than requested because all available
       input was exhausted.  For example, if gets is invoked  when  there
       are  only  three  characters  available  for  input  and no end-of-line
       sequence, gets returns  an  empty  string  and  a  subsequent  call  to
       fblocked will return 1.

       ChannelId must be an identifier for an open channel such as a Tcl stan-        dard channel (stdin, stdout, or stderr), the return value from an invo-        cation  of  open or socket, or the result of a channel creation command        provided by a Tcl extension.


SEE ALSO
       gets(n), open(n), read(n), Tcl_StandardChannels(3)


KEYWORDS
       blocking, nonblocking



Tcl                                   7.5                          fblocked(n)