| C SB+rfionceonce-poonceonces | |
| (* | |
| * Result: Sometimes | |
| * | |
| * This litmus test demonstrates that LKMM is not fully multicopy atomic. | |
| *) | |
| { | |
| int x; | |
| int y; | |
| } | |
| P0(int *x, int *y) | |
| { | |
| int r1; | |
| int r2; | |
| WRITE_ONCE(*x, 1); | |
| r1 = READ_ONCE(*x); | |
| r2 = READ_ONCE(*y); | |
| } | |
| P1(int *x, int *y) | |
| { | |
| int r3; | |
| int r4; | |
| WRITE_ONCE(*y, 1); | |
| r3 = READ_ONCE(*y); | |
| r4 = READ_ONCE(*x); | |
| } | |
| locations [0:r1; 1:r3; x; y] (* Debug aid: Print things not in "exists". *) | |
| exists (0:r2=0 /\ 1:r4=0) |