factor/library/platform/native/io-internals.factor

75 lines
2.5 KiB
Factor

! :folding=none:collapseFolds=1:
! $Id$
!
! Copyright (C) 2004 Slava Pestov.
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions are met:
!
! 1. Redistributions of source code must retain the above copyright notice,
! this list of conditions and the following disclaimer.
!
! 2. Redistributions in binary form must reproduce the above copyright notice,
! this list of conditions and the following disclaimer in the documentation
! and/or other materials provided with the distribution.
!
! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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IN: io-internals
USE: combinators
USE: continuations
USE: kernel
USE: namespaces
USE: stack
USE: strings
USE: threads
: stdin 0 getenv ;
: stdout 1 getenv ;
: stderr 2 getenv ;
: flush-fd ( port -- )
[ swap add-write-io-task (yield) ] callcc0 drop ;
: wait-to-write ( len port -- )
tuck can-write? [ drop ] [ flush-fd ] ifte ;
: blocking-write ( str port -- )
over
dup string? [ str-length ] [ drop 1 ] ifte
over wait-to-write write-fd-8 ;
: fill-fd ( port -- )
[ swap add-read-line-io-task (yield) ] callcc0 drop ;
: wait-to-read-line ( port -- )
dup can-read-line? [ drop ] [ fill-fd ] ifte ;
: blocking-read-line ( port -- line )
dup wait-to-read-line read-line-fd-8 dup [ sbuf>str ] when ;
: fill-fd# ( count port -- )
[ -rot add-read-count-io-task (yield) ] callcc0 2drop ;
: wait-to-read# ( count port -- )
2dup can-read-count? [ 2drop ] [ fill-fd# ] ifte ;
: blocking-read# ( count port -- str )
2dup wait-to-read# read-count-fd-8 dup [ sbuf>str ] when ;
: wait-to-accept ( socket -- )
[ swap add-accept-io-task (yield) ] callcc0 drop ;
: blocking-accept ( socket -- host port in out )
dup wait-to-accept accept-fd ;