summaryrefslogtreecommitdiffstats
path: root/tools/memory-model/litmus-tests/MP+poonceonces.litmus
blob: b2b60b84fb9dc70536c4c4a12adf3ea922f00c8a (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
C MP+poonceonces

(*
 * Result: Maybe
 *
 * Can the counter-intuitive message-passing outcome be prevented with
 * no ordering at all?
 *)

{}

P0(int *x, int *y)
{
	WRITE_ONCE(*x, 1);
	WRITE_ONCE(*y, 1);
}

P1(int *x, int *y)
{
	int r0;
	int r1;

	r0 = READ_ONCE(*y);
	r1 = READ_ONCE(*x);
}

exists (1:r0=1 /\ 1:r1=0)