atomic_add_unless

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

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.