1C SB+poonceonces 2 3(* 4 * Result: Sometimes 5 * 6 * This litmus test demonstrates that at least some ordering is required 7 * to order the store-buffering pattern, where each process writes to the 8 * variable that the preceding process reads. 9 *) 10 11{} 12 13P0(int *x, int *y) 14{ 15 int r0; 16 17 WRITE_ONCE(*x, 1); 18 r0 = READ_ONCE(*y); 19} 20 21P1(int *x, int *y) 22{ 23 int r0; 24 25 WRITE_ONCE(*y, 1); 26 r0 = READ_ONCE(*x); 27} 28 29exists (0:r0=0 /\ 1:r0=0) 30