84 lines
2.2 KiB
Factor
84 lines
2.2 KiB
Factor
! Copyright (C) 2008 Slava Pestov.
|
|
! See http://factorcode.org/license.txt for BSD license.
|
|
USING: alien.syntax kernel io.nonblocking io.unix.backend
|
|
sequences assocs unix unix.kqueue math namespaces ;
|
|
IN: io.unix.backend.kqueue
|
|
|
|
TUPLE: unix-kqueue-io ;
|
|
|
|
! Global variables
|
|
SYMBOL: kqueue-fd
|
|
SYMBOL: kqueue-changes
|
|
SYMBOL: kqueue-events
|
|
|
|
: max-events ( -- n )
|
|
#! We read up to 256 events at a time. This is an arbitrary
|
|
#! constant...
|
|
256 ; inline
|
|
|
|
M: unix-kqueue-io init-unix-io ( -- )
|
|
V{ } clone kqueue-changes set-global
|
|
max-events "kevent" <c-array> kqueue-events set-global
|
|
kqueue kqueue-fd dup io-error set-global ;
|
|
|
|
: add-change ( event -- ) kqueue-changes get-global push ;
|
|
|
|
: io-task-filter ( task -- n )
|
|
class {
|
|
{ read-task EVFILT_READ }
|
|
{ accept-task EVFILT_READ }
|
|
{ receive-task EVFILT_READ }
|
|
{ write-task EVFILT_WRITE }
|
|
{ connect-task EVFILT_WRITE }
|
|
{ send-task EVFILT_WRITE }
|
|
} case ;
|
|
|
|
: make-kevent ( task -- event )
|
|
"kevent" <c-object>
|
|
over io-task-fd over set-kevent-ident
|
|
over io-task-filter over set-kevent-filter ;
|
|
|
|
: make-add-kevent ( task -- event )
|
|
make-kevent
|
|
EV_ADD over set-kevent-flags ;
|
|
|
|
: make-delete-kevent ( task -- event )
|
|
make-kevent
|
|
EV_DELETE over set-kevent-flags ;
|
|
|
|
M: unix-select-io register-io-task ( task -- )
|
|
make-add-kevent add-change ;
|
|
|
|
M: unix-select-io unregister-io-task ( task -- )
|
|
make-delete-kevent add-change ;
|
|
|
|
: kqueue-changelist ( -- byte-array n )
|
|
kqueue-changes get-global
|
|
dup concat f like over length rot delete-all ;
|
|
|
|
: kqueue-eventlist ( -- byte-array n )
|
|
kqueue-events get-global max-events ;
|
|
|
|
: do-kevent ( timespec -- n )
|
|
>r
|
|
kqueue-fd get-global
|
|
kqueue-changelist
|
|
kqueue-eventlist
|
|
r> kevent dup multiplexer-error ;
|
|
|
|
: kevent-task ( kevent -- task )
|
|
dup kevent-filter {
|
|
{ [ dup EVFILT_READ = ] [ read-tasks ] }
|
|
{ [ dup EVFILT_WRITE = ] [ write-tasks ] }
|
|
} cond get at ;
|
|
|
|
: handle-kevents ( n eventlist -- )
|
|
[ kevent-nth kevent-task handle-fd ] curry each ;
|
|
|
|
M: unix-select-io unix-io-multiplex ( ms -- )
|
|
make-timespec
|
|
do-kevent
|
|
kqueue-events get-global handle-kevents ;
|
|
|
|
T{ unix-kqueue-io } unix-io-backend set-global
|