test_and_change_bit

Langue: en

Autres versions - même langue

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

Section: 9 (Appels noyau Linux)

NAME

test_and_change_bit - Change a bit and return its old value

SYNOPSIS

int test_and_change_bit(int nr, volatile void * addr);

ARGUMENTS

nr

Bit to change

addr

Address to count from

DESCRIPTION

This operation is atomic and cannot be reordered. It also implies a memory barrier.