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90 lines
1.3 KiB
Plaintext
90 lines
1.3 KiB
Plaintext
(* ****** ****** *)
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//
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// HX-2013-11
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//
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// Implementing a variant of
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// the problem of Dining Philosophers
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//
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(* ****** ****** *)
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//
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#include
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"share/atspre_define.hats"
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#include
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"share/atspre_staload.hats"
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//
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(* ****** ****** *)
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staload
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UN = "prelude/SATS/unsafe.sats"
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(* ****** ****** *)
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staload "{$LIBATSHWXI}/teaching/mythread/SATS/channel.sats"
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(* ****** ****** *)
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staload _ = "libats/DATS/deqarray.dats"
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staload _ = "{$LIBATSHWXI}/teaching/mythread/DATS/channel.dats"
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(* ****** ****** *)
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staload "./DiningPhil2.sats"
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(* ****** ****** *)
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datavtype fork = FORK of (nphil)
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(* ****** ****** *)
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assume fork_vtype = fork
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(* ****** ****** *)
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implement
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fork_get_num (f) = let val FORK(n) = f in n end
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(* ****** ****** *)
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local
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val
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the_forkarray = let
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//
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typedef t = channel(fork)
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//
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implement
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array_tabulate$fopr<t>
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(n) = ch where
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{
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val n = $UN.cast{nphil}(n)
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val ch = channel_create_exn<fork> (i2sz(2))
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val () = channel_insert (ch, FORK (n))
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}
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//
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in
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arrayref_tabulate<t> (i2sz(NPHIL))
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end // end of [val]
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in (* in of [local] *)
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implement fork_changet (n) = the_forkarray[n]
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end // end of [local]
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(* ****** ****** *)
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local
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val the_forktray =
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channel_create_exn<fork> (i2sz(NPHIL+1))
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in (* in of [local] *)
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implement forktray_changet () = the_forktray
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end // end of [local]
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(* ****** ****** *)
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(* end of [DiningPhil2_fork.dats] *)
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