Name
atomic_add_unless —
add unless the number is already a given value
Synopsis
int atomic_add_unless ( | atomic_t * | v, |
| | int | a, |
| | int | u); |
Arguments
v
pointer of type atomic_t
a
the amount to add to v...
u
...unless v is equal to u.
Description
Atomically adds a to v, so long as v was not already u.
Returns non-zero if v was not u, and zero otherwise.