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C MP+pooncerelease+poacquireonce
(*
* Result: Never
*
* This litmus test demonstrates that smp_store_release() and
* smp_load_acquire() provide sufficient ordering for the message-passing
* pattern.
*)
{}
P0(int *buf, int *flag) // Producer
{
WRITE_ONCE(*buf, 1);
smp_store_release(flag, 1);
}
P1(int *buf, int *flag) // Consumer
{
int r0;
int r1;
r0 = smp_load_acquire(flag);
r1 = READ_ONCE(*buf);
}
exists (1:r0=1 /\ 1:r1=0) (* Bad outcome. *)
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