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LISA auto/RW-G+RW-R+RW-G+RW-G+RW-Rs+RW-RCD
(*
* Result: Never
*
* Process 0 starts (t=100000).
*
* P0 advances one grace period (t=200000).
*
* P1 goes back a bit less than one grace period (t=101001).
*
* P2 advances one grace period (t=201002).
*
* P3 advances one grace period (t=301003).
*
* P4 advances slightly (t=301005).
*
* P5 advances slightly (t=301007).
*
* Process 0 start at t=100000, process 6 end at t=301007: Cycle forbidden.
*)
{
4:r3=x0; x5=y0; 5:r4=y0;
}
P0 | P1 | P2 | P3 | P4 | P5 ;
r[once] r1 x0 | f[rcu_read_lock] | r[once] r1 x2 | r[once] r1 x3 | f[rcu_read_lock] | f[rcu_read_lock] ;
f[sync] | r[once] r1 x1 | f[sync] | f[sync] | r[once] r1 x4 | r[deref] r1 x5 ;
w[once] x1 1 | w[once] x2 1 | w[once] x3 1 | w[once] x4 1 | w[assign] x5 r3 | mov r4 (eq r1 r4) ;
| f[rcu_read_unlock] | | | f[rcu_read_unlock] | b[] r4 CTRL5 ;
| | | | | w[once] r1 1 ;
| | | | | CTRL5: ;
| | | | | f[rcu_read_unlock] ;
Observed
5:r1=x0; 4:r1=0; 3:r1=1; 2:r1=1; 1:r1=1; 0:r1=1;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=1; 1:r1=1; 0:r1=1;
and 5:r1=x0; 4:r1=0; 3:r1=0; 2:r1=1; 1:r1=1; 0:r1=1;
and 5:r1=x0; 4:r1=1; 3:r1=1; 2:r1=0; 1:r1=1; 0:r1=1;
and 5:r1=x0; 4:r1=0; 3:r1=1; 2:r1=0; 1:r1=1; 0:r1=1;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=0; 1:r1=1; 0:r1=1;
and 5:r1=x0; 4:r1=0; 3:r1=0; 2:r1=0; 1:r1=1; 0:r1=1;
and 5:r1=x0; 4:r1=1; 3:r1=1; 2:r1=1; 1:r1=0; 0:r1=1;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=1; 1:r1=0; 0:r1=1;
and 5:r1=x0; 4:r1=1; 3:r1=1; 2:r1=0; 1:r1=0; 0:r1=1;
and 5:r1=x0; 4:r1=0; 3:r1=1; 2:r1=0; 1:r1=0; 0:r1=1;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=0; 1:r1=0; 0:r1=1;
and 5:r1=y0; 4:r1=1; 3:r1=1; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=1; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=0; 3:r1=1; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=x0; 4:r1=0; 3:r1=1; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=1; 3:r1=0; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=0; 3:r1=0; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=x0; 4:r1=0; 3:r1=0; 2:r1=1; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=1; 3:r1=1; 2:r1=0; 1:r1=1; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=1; 2:r1=0; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=0; 3:r1=1; 2:r1=0; 1:r1=1; 0:r1=0;
and 5:r1=x0; 4:r1=0; 3:r1=1; 2:r1=0; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=1; 3:r1=0; 2:r1=0; 1:r1=1; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=0; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=0; 3:r1=0; 2:r1=0; 1:r1=1; 0:r1=0;
and 5:r1=y0; 4:r1=1; 3:r1=1; 2:r1=1; 1:r1=0; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=1; 2:r1=1; 1:r1=0; 0:r1=0;
and 5:r1=y0; 4:r1=1; 3:r1=0; 2:r1=1; 1:r1=0; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=1; 1:r1=0; 0:r1=0;
and 5:r1=y0; 4:r1=1; 3:r1=1; 2:r1=0; 1:r1=0; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=1; 2:r1=0; 1:r1=0; 0:r1=0;
and 5:r1=x0; 4:r1=0; 3:r1=1; 2:r1=0; 1:r1=0; 0:r1=0;
and 5:r1=y0; 4:r1=1; 3:r1=0; 2:r1=0; 1:r1=0; 0:r1=0;
and 5:r1=x0; 4:r1=1; 3:r1=0; 2:r1=0; 1:r1=0; 0:r1=0;