murphismv/MESI.m at master · lyj238/murphismv · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
const clientNUMS : 3;
type location: enum{ M, E, S, I};

     client: 1 .. clientNUMS;

var state : array [client] of location;


ruleset i : client do
rule "t1" state[i] = E ==>
begin
      state[i] := M; endrule;


rule "t2"
      state[i] = I ==>
begin
      for j: client do
      if (j=i) then state[j]:=S;
      elsif (state[j]=E) then state[j]:=S;
      elsif (state[j]=M)  then state[j]:=S;
      elsif (state[j]=I) then state[j]:=I;
      else   state[j]:=S;
      endif;
      endfor; endrule;


rule "t3"
      state[i] = S ==>
begin
      for j: client do
      if (j=i) then state[j]:=E ;
      else   state[j]:=I;
      endif;
      endfor; endrule;


rule "t4"
      state[i] = I ==>
begin
      for j: client do
      if (j=i) then state[j]:=E ;
      else   state[j]:=I;
      endif;
      endfor; endrule;
endruleset;

startstate
begin
 for i: client do
    state[i] := I;
  endfor;
endstartstate;