test_and_clear_bit (9) - Linux Manuals

test_and_clear_bit: Clear a bit and return its old value

NAME

test_and_clear_bit - Clear a bit and return its old value

SYNOPSIS

bool test_and_clear_bit(long nr, volatile unsigned long * addr);

ARGUMENTS

nr

Bit to clear

addr

Address to count from

DESCRIPTION

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

COPYRIGHT