1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef BIONIC_ATOMIC_INLINE_H
18#define BIONIC_ATOMIC_INLINE_H
19
20/*
21 * Inline declarations and macros for some special-purpose atomic
22 * operations.  These are intended for rare circumstances where a
23 * memory barrier needs to be issued inline rather than as a function
24 * call.
25 *
26 * Macros defined in this header:
27 *
28 * void ANDROID_MEMBAR_FULL()
29 *   Full memory barrier.  Provides a compiler reordering barrier, and
30 *   on SMP systems emits an appropriate instruction.
31 */
32
33#if !defined(ANDROID_SMP)
34# error "Must define ANDROID_SMP before including atomic-inline.h"
35#endif
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41/* Define __ATOMIC_INLINE__ to control the inlining of all atomics
42 * functions declared here. For a slight performance boost, we want
43 * all of them to be always_inline
44 */
45#define  __ATOMIC_INLINE__  static __inline__ __attribute__((always_inline))
46
47#if defined(__arm__)
48#  include "bionic_atomic_arm.h"
49#elif defined(__aarch64__)
50#  include "bionic_atomic_arm64.h"
51#elif defined(__i386__)
52#  include "bionic_atomic_x86.h"
53#elif defined(__mips__)
54#  include "bionic_atomic_mips.h"
55#else
56#  include "bionic_atomic_gcc_builtin.h"
57#endif
58
59#define ANDROID_MEMBAR_FULL  __bionic_memory_barrier
60
61#ifdef __cplusplus
62} // extern "C"
63#endif
64
65#endif // BIONIC_ATOMIC_INLINE_H
66