| author | berghofe |
| Thu, 07 Oct 1999 15:40:32 +0200 | |
| changeset 7786 | cf9d07ad62af |
| parent 5111 | 8f4b72f0c15d |
| permissions | -rw-r--r-- |
| 5111 | 1 |
(* Title: HOL/UNITY/Network |
2 |
ID: $Id$ |
|
3 |
Author: Lawrence C Paulson, Cambridge University Computer Laboratory |
|
4 |
Copyright 1998 University of Cambridge |
|
5 |
||
6 |
The Communication Network |
|
7 |
||
8 |
From Misra, "A Logic for Concurrent Programming" (1994), section 5.7 |
|
9 |
*) |
|
10 |
||
| 4776 | 11 |
Network = UNITY + |
12 |
||
| 5111 | 13 |
(*The state assigns a number to each process variable*) |
14 |
||
| 4776 | 15 |
datatype pvar = Sent | Rcvd | Idle |
16 |
||
17 |
datatype pname = Aproc | Bproc |
|
18 |
||
19 |
types state = "pname * pvar => nat" |
|
20 |
||
21 |
end |