diff options
Diffstat (limited to 'tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus')
-rw-r--r-- | tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus b/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus new file mode 100644 index 000000000000..1a2fe5830381 --- /dev/null +++ b/tools/memory-model/litmus-tests/MP+onceassign+derefonce.litmus @@ -0,0 +1,25 @@ +C MP+onceassign+derefonce.litmus + +{ +y=z; +z=0; +} + +P0(int *x, int **y) +{ + WRITE_ONCE(*x, 1); + rcu_assign_pointer(*y, x); +} + +P1(int *x, int **y) +{ + int *r0; + int r1; + + rcu_read_lock(); + r0 = rcu_dereference(*y); + r1 = READ_ONCE(*r0); + rcu_read_unlock(); +} + +exists (1:r0=x /\ 1:r1=0) |