L4Re - L4 Runtime Environment
atomic.h
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1 
6 /*
7  * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
8  * Alexander Warg <warg@os.inf.tu-dresden.de>
9  * economic rights: Technische Universit├Ąt Dresden (Germany)
10  *
11  * This file is part of TUD:OS and distributed under the terms of the
12  * GNU General Public License 2.
13  * Please see the COPYING-GPL-2 file for details.
14  *
15  * As a special exception, you may use this file as part of a free software
16  * library without restriction. Specifically, if other files instantiate
17  * templates or use macros or inline functions from this file, or you compile
18  * this file and link it with other files to produce an executable, this
19  * file does not by itself cause the resulting executable to be covered by
20  * the GNU General Public License. This exception does not however
21  * invalidate any other reasons why the executable file might be covered by
22  * the GNU General Public License.
23  */
24 #pragma once
25 
26 #include <l4/sys/compiler.h>
27 
28 EXTERN_C long int
29 l4_atomic_add(volatile long int* mem, long int offset) L4_NOTHROW L4_LONG_CALL;
30 
31 EXTERN_C long int
32 l4_atomic_xchg(volatile long int* mem, long int newval) L4_NOTHROW L4_LONG_CALL;
33 
34 EXTERN_C long int
35 l4_atomic_cmpxchg(volatile long int* mem, long int oldval, long int newval) L4_NOTHROW L4_LONG_CALL;
L4 compiler related defines.
#define EXTERN_C
Mark C types and functions.
Definition: compiler.h:188
#define L4_NOTHROW
Mark a function declaration and definition as never throwing an exception.
Definition: compiler.h:185