linux-stable/tools/memory-model/litmus-tests/SB+poonceonces.litmus
Paul E. McKenney 1947bfcf81 tools/memory-model: Add types to litmus tests
This commit adds type information for global variables in the litmus
tests in order to allow easier use with klitmus7.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2020-11-06 17:25:16 -08:00

32 lines
440 B
Text

C SB+poonceonces
(*
* Result: Sometimes
*
* This litmus test demonstrates that at least some ordering is required
* to order the store-buffering pattern, where each process writes to the
* variable that the preceding process reads.
*)
{
int x;
int y;
}
P0(int *x, int *y)
{
int r0;
WRITE_ONCE(*x, 1);
r0 = READ_ONCE(*y);
}
P1(int *x, int *y)
{
int r0;
WRITE_ONCE(*y, 1);
r0 = READ_ONCE(*x);
}
exists (0:r0=0 /\ 1:r0=0)