File: ex_3b.pml

package info (click to toggle)
spin 6.4.9%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 2,136 kB
  • sloc: ansic: 39,791; yacc: 1,015; makefile: 40; sh: 8
file content (16 lines) | stat: -rw-r--r-- 261 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
// http://spinroot.com/spin/Doc/Exercises.html
// Peterson's algorithm, 1981

bool flag[2]
bool turn

active [2] proctype user()
{
	flag[_pid] = true
	turn = _pid
	(flag[1-_pid] == false || turn == 1-_pid)

crit:	skip	// critical section

	flag[_pid] = false
}