blob: c36341d1aed66d2e53df3197526726be1e5ed40b (
plain)
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
|
C S+fencewmbonceonce+poacquireonce
(*
* Result: Never
*
* Can a smp_wmb(), instead of a release, and an acquire order a prior
* store against a subsequent store?
*)
{
int x;
int y;
}
P0(int *x, int *y)
{
WRITE_ONCE(*x, 2);
smp_wmb();
WRITE_ONCE(*y, 1);
}
P1(int *x, int *y)
{
int r0;
r0 = smp_load_acquire(y);
WRITE_ONCE(*x, 1);
}
exists (x=2 /\ 1:r0=1)
|
