--- gforth/tasker.fs 1997/05/21 20:39:42 1.4 +++ gforth/tasker.fs 2001/06/12 09:29:10 1.9 @@ -1,6 +1,6 @@ \ Multitasker 19aug94py -\ Copyright (C) 1995-1997 Free Software Foundation, Inc. +\ Copyright (C) 1995,1996,1997 Free Software Foundation, Inc. \ This file is part of Gforth. @@ -16,7 +16,7 @@ \ You should have received a copy of the GNU General Public License \ 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. Create sleepers sleepers A, sleepers A, 0 , @@ -41,22 +41,21 @@ Create sleepers sleepers A, sleepers A, lp! fp! rp! prev-task @ sleep ; \ USER' computes the task offset -: user' ( 'user' -- n ) - ' >body @ postpone literal ; immediate -interpretation: - ' >body @ ; +:noname ' >body @ ; +:noname ' >body @ postpone literal ; +interpret/compile: user' ( 'user' -- n ) \ NEWTASK creates a new, sleeping task : NewTask ( n -- Task ) dup 2* 2* udp @ + dup allocate throw + >r r@ over - udp @ - next-task over udp @ move - r> over user' r0 + ! dup >r - dup r@ user' l0 + ! over - - dup r@ user' f0 + ! over - - dup r@ user' s0 + ! over - + r> over user' rp0 + ! dup >r + dup r@ user' lp0 + ! over - + dup r@ user' fp0 + ! over - + dup r@ user' sp0 + ! over - dup r@ user' normal-dp + dup >r ! - r> r@ user' dpp + ! + $10 + - r@ user' >tib + ! + r> r@ user' dpp + ! 2drop + 0 r@ user' current-input + ! r> dup 2dup 2! dup sleep ; : kill-task @@ -65,11 +64,11 @@ interpretation: : (pass) ( x1 .. xn n task -- ) rdrop [ ' 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@ user' f0 + @ swap 1+ - r@ user' l0 + @ swap 1+ - cells r@ user' s0 + @ tuck swap - dup r@ user' save-task + ! + r@ user' fp0 + @ swap 1+ + r@ user' lp0 + @ swap 1+ + cells r@ user' sp0 + @ tuck swap - dup r@ user' save-task + ! ?DO I ! cell +LOOP r> wake ; : activate ( task -- ) 0 swap (pass) ;