1/*
2 * Copyright (C) 2015 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#include "atomic.h"
18
19#include <stdatomic.h>
20#include <stdbool.h>
21
22int32_t android_atomic_acquire_load(volatile const int32_t* addr) {
23    volatile atomic_int_least32_t* a = (volatile atomic_int_least32_t*) addr;
24    return atomic_load_explicit(a, memory_order_acquire);
25}
26
27void android_atomic_release_store(int32_t value, volatile int32_t* addr) {
28    volatile atomic_int_least32_t* a = (volatile atomic_int_least32_t*) addr;
29    atomic_store_explicit(a, value, memory_order_release);
30}
31
32int32_t android_atomic_exchange(int32_t value, volatile const int32_t* addr) {
33    volatile atomic_int_least32_t* a = (volatile atomic_int_least32_t*) addr;
34    return atomic_exchange(a, value);
35}
36
37bool android_atomic_compare_exchange(int32_t* expect, int32_t desire, volatile const int32_t* addr) {
38    volatile atomic_int_least32_t* a = (volatile atomic_int_least32_t*) addr;
39    return atomic_compare_exchange_weak(a, expect, desire);
40}
41