C WWC+poacquireonces+Release
Hash=c5aa8d41153d940dd9c0fe849089743c
Cycle=PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce WseOnceRelease RfeReleaseAcquire
Relax=RfeOnceAcquire WseOnceRelease RfeReleaseAcquire
Safe=PodRWAcquireOnce
Generator=diy7 (version 7.46+3)
Prefetch=1:x=F,1:y=W,2:y=F,2:x=W
Com=Rf Rf Ws
Orig=RfeReleaseAcquire PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce WseOnceRelease
{}
P0(int* x) {
smp_store_release(x,2);
}
P1(int* x,int* y) {
int r0 = smp_load_acquire(x);
WRITE_ONCE(*y,1);
}
P2(int* x,int* y) {
int r0 = smp_load_acquire(y);
WRITE_ONCE(*x,1);
}
Observed
x=2; 2:r0=1; 1:r0=1;
and x=1; 2:r0=1; 1:r0=1;
C11 equivalent:
C WWC+poacquireonces+Release
Hash=c5aa8d41153d940dd9c0fe849089743c
Cycle=PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce WseOnceRelease RfeReleaseAcquire
Relax=RfeOnceAcquire WseOnceRelease RfeReleaseAcquire
Safe=PodRWAcquireOnce
Generator=diy7 (version 7.46+3)
Prefetch=1:x=F,1:y=W,2:y=F,2:x=W
Com=Rf Rf Ws
Orig=RfeReleaseAcquire PodRWAcquireOnce RfeOnceAcquire PodRWAcquireOnce WseOnceRelease
{}
P0(atomic_int* x) {
atomic_store_explicit(x,2,memory_order_release);
}
P1(atomic_int* x,atomic_int* y) {
int r0 = atomic_load_explicit(x,memory_order_acquire);
atomic_store_explicit(y,1,memory_order_relaxed);
}
P2(atomic_int* x,atomic_int* y) {
int r0 = atomic_load_explicit(y,memory_order_acquire);
atomic_store_explicit(x,1,memory_order_relaxed);
}
exists (x=2 /\ 1:r0=2 /\ 2:r0=1)