You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

32 lines
661 B

/*
* Copyright (C) 2014 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu
* @{
*
* @file atomic.c
* @brief atomic set and return function
*
* @author Kaspar Schleiser <kaspar@schleiser.de>
* @author Oliver Hahm <oliver.hahm@inria.fr>
*
* @}
*/
#include "atomic.h"
#include "cpu.h"
unsigned int atomic_set_return(unsigned int *val, unsigned int set)
{
dINT();
unsigned int old_val = *val;
*val = set;
eINT();
return old_val;
}