version 1.4, 1997/05/21 20:39:42
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version 1.9, 2001/06/12 09:29:10
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\ Multitasker 19aug94py |
\ Multitasker 19aug94py |
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\ Copyright (C) 1995-1997 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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Line 16
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\ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
\ along with this program; if not, write to the Free Software |
\ along with this program; if not, write to the Free Software |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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Create sleepers sleepers A, sleepers A, 0 , |
Create sleepers sleepers A, sleepers A, 0 , |
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Line 41 Create sleepers sleepers A, sleepers A,
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Line 41 Create sleepers sleepers A, sleepers A,
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lp! fp! rp! prev-task @ sleep ; |
lp! fp! rp! prev-task @ sleep ; |
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\ USER' computes the task offset |
\ USER' computes the task offset |
: user' ( 'user' -- n ) |
:noname ' >body @ ; |
' >body @ postpone literal ; immediate |
:noname ' >body @ postpone literal ; |
interpretation: |
interpret/compile: user' ( 'user' -- n ) |
' >body @ ; |
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\ NEWTASK creates a new, sleeping task |
\ NEWTASK creates a new, sleeping task |
: NewTask ( n -- Task ) dup 2* 2* udp @ + dup |
: NewTask ( n -- Task ) dup 2* 2* udp @ + dup |
allocate throw + >r |
allocate throw + >r |
r@ over - udp @ - next-task over udp @ move |
r@ over - udp @ - next-task over udp @ move |
r> over user' r0 + ! dup >r |
r> over user' rp0 + ! dup >r |
dup r@ user' l0 + ! over - |
dup r@ user' lp0 + ! over - |
dup r@ user' f0 + ! over - |
dup r@ user' fp0 + ! over - |
dup r@ user' s0 + ! over - |
dup r@ user' sp0 + ! over - |
dup r@ user' normal-dp + dup >r ! |
dup r@ user' normal-dp + dup >r ! |
r> r@ user' dpp + ! + $10 + |
r> r@ user' dpp + ! 2drop |
r@ user' >tib + ! |
0 r@ user' current-input + ! |
r> dup 2dup 2! dup sleep ; |
r> dup 2dup 2! dup sleep ; |
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: kill-task |
: kill-task |
Line 65 interpretation:
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Line 64 interpretation:
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: (pass) ( x1 .. xn n task -- ) rdrop |
: (pass) ( x1 .. xn n task -- ) rdrop |
[ ' kill-task >body ] ALiteral r> |
[ ' kill-task >body ] ALiteral r> |
rot >r r@ user' r0 + @ 2 cells - dup >r 2! |
rot >r r@ user' rp0 + @ 2 cells - dup >r 2! |
r> swap 1+ |
r> swap 1+ |
r@ user' f0 + @ swap 1+ |
r@ user' fp0 + @ swap 1+ |
r@ user' l0 + @ swap 1+ |
r@ user' lp0 + @ swap 1+ |
cells r@ user' s0 + @ tuck swap - dup r@ user' save-task + ! |
cells r@ user' sp0 + @ tuck swap - dup r@ user' save-task + ! |
?DO I ! cell +LOOP r> wake ; |
?DO I ! cell +LOOP r> wake ; |
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: activate ( task -- ) 0 swap (pass) ; |
: activate ( task -- ) 0 swap (pass) ; |