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chameneos_sync.dats
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chameneos_sync.dats
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absview chameneos_v (int)
absview memlock_v () // accessing shared memory
absview inpool_v (int) // semaphore(2)
absview first_v () // semaphore(1)
abst@ype color
assume color = int // temp to appease typechecker
(* ****** ****** *)
(*
extern
fun identify_chameneos ()
: (chameneos_v ch | (*void*)) = "identify_chameneos"
*)
(* ****** ****** *)
(*
extern
fun remove_chameneos
{ch:int}
(pf: chameneos_v ch) : () = "remove_chameneos"
*)
(* ****** ****** *)
extern
fun try_enter_pool
{ch:int}
(pf: !chameneos_v ch | (*void*))
: [b:bool] (option_v (inpool_v ch, b) | bool b) (* = "try_enter_pool" *)
(* ****** ****** *)
extern
fun enter_pool
{ch:int}
(pf: !chameneos_v ch | (*void*)): (inpool_v (ch) | void)
(* ****** ****** *)
(*
implement
enter_pool
(pf | (*void*)) = let
val (pfopt | ans) = try_enter_pool (pf | (*void*))
in
if ans then let
prval Some_v (pf) = pfopt in (pf | ())
end else let // ans = false
prval None_v () = pfopt in enter_pool (pf | (*void*))
end (* end of [if] *)
end // end of [enter_pool]
*)
(* ****** ****** *)
////
extern
fun exit_pool
{ch:int}
(pf1: !chameneos_v ch , pf2: inpool_v ch | (*void*)): void = "exit_pool"
(* ****** ****** *)
extern
fun first_in_pool
{ch:int}
(pf: !chameneos_v ch, pf2: !inpool_v() | (*void*)): (first_v () | void) =
"first_in_pool"
(* ****** ****** *)
extern
fun first_out_pool
{ch:int}
(pf1: !chameneos_v ch , pf2: !inpool_v (), pf3: first_v() | (*void*)): void =
"first_out_pool"
(* ****** ****** *)
extern
fun inpool_wait // conditional wait within pool (i.e, chameneos A waiting for chameneos B)
{ch:int}
(pf1: !chameneos_v ch , pf2: !inpool_v () | (*void*)):<> void = "memlock_wait"
(* ****** ****** *)
extern
fun memlock_get_color
(pf1: !memlock_v () , pf2: !inpool_v () | (*void*)):<> color = "memlock_get_color"
(* ****** ****** *)
extern
fun memlock_set_color
(pf1: !memlock_v () , pf2: !inpool_v () | c: color):<> void = "memlock_set_color"
(* ****** ****** *)
extern
fun memlock_get_id
(pf1: !memlock_v () , pf2: !inpool_v () | (*void*)):<> int = "memlock_get_id"
(* ****** ****** *)
extern
fun memlock_set_id
(pf1: !memlock_v () , pf2: !inpool_v () | n: int):<> void = "memlock_set_id"
(* ****** ****** *)
extern
fun acquire_memlock {ch:int}
(pf1: !chameneos_v ch , pf2: !inpool_v () | n: int): (memlock_v () | void)
= "acquire_memlock"
(* ****** ****** *)
extern
fun release_memlock
{ch:int}
(pf1: !chameneos_v ch, pf2: memlock_v () , pf3: !inpool_v () | n: int): void
= "release_memlock"
(* ****** ****** *)
(* end of [chameneos_fork.dats] *)
////
absview chameneos_v ()
absview memlock_v () // accessing shared memory
absview inpool_v () // semaphore(2)
absview first_v () // semaphore(1)
abst@ype color
assume color = int // temp to appease typechecker
(* ****** ****** *)
extern
fun identify_chameneos () : (chameneos_v ch | (*void*)) = "identify_chameneos"
(* ****** ****** *)
extern
fun remove_chameneos
{ch:int}
(pf: chameneos_v ch) : () = "identify_chameneos"
(* ****** ****** *)
extern
fun enter_pool
{ch:int}
(pf: !chameneos_v ch | (*void*)): (inpool_v () | (*void*)) = "enter_pool"
(* ****** ****** *)
extern
fun exit_pool
{ch:int}
(pf1: !chameneos_v ch , pf2: inpool_v () | (*void*)): void = "exit_pool"
(* ****** ****** *)
extern
fun first_in_pool
{ch:int}
(pf: !chameneos_v ch, pf2: !inpool_v() | (*void*)): (first_v () | void) =
"first_in_pool"
(* ****** ****** *)
extern
fun first_out_pool
{ch:int}
(pf1: !chameneos_v ch , pf2: !inpool_v (), pf3: first_v() | (*void*)): void =
"first_out_pool"
(* ****** ****** *)
extern
fun inpool_wait // conditional wait within pool (i.e, chameneos A waiting for chameneos B)
{ch:int}
(pf1: !chameneos_v ch , pf2: !inpool_v () | (*void*)):<> void = "memlock_wait"
(* ****** ****** *)
extern
fun memlock_get_color
(pf1: !memlock_v () , pf2: !inpool_v () | (*void*)):<> color = "memlock_get_color"
(* ****** ****** *)
extern
fun memlock_set_color
(pf1: !memlock_v () , pf2: !inpool_v () | c: color):<> void = "memlock_set_color"
(* ****** ****** *)
extern
fun memlock_get_id
(pf1: !memlock_v () , pf2: !inpool_v () | (*void*)):<> int = "memlock_get_id"
(* ****** ****** *)
extern
fun memlock_set_id
(pf1: !memlock_v () , pf2: !inpool_v () | n: int):<> void = "memlock_set_id"
(* ****** ****** *)
extern
fun acquire_memlock
{ch:int}
(pf1: !chameneos_v ch , pf2: !inpool_v () | n: int): (memlock_v () | void)
= "acquire_memlock"
(* ****** ****** *)
extern
fun release_memlock
{ch:int}
(pf1: !chameneos_v ch, pf2: memlock_v () , pf3: !inpool_v () | n: int): void
= "release_memlock"
(* ****** ****** *)
(* end of [chameneos_fork.dats] *)