atomic_dec_and_test(9) centos man page | unix.com

ATOMIC_DEC_AND_TEST(9)						   Driver Basics					    ATOMIC_DEC_AND_TEST(9)

NAME
       atomic_dec_and_test - decrement and test

SYNOPSIS
       int atomic_dec_and_test(atomic_t * v);

ARGUMENTS
       v
	   pointer of type atomic_t

DESCRIPTION
       Atomically decrements v by 1 and returns true if the result is 0, or false for all other cases.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						    ATOMIC_DEC_AND_TEST(9)