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threading-posix.h
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1 /*
2  * Copyright (c) 2015 Hugh Bailey <obs.jim@gmail.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #pragma once
18 
19 static inline long os_atomic_inc_long(volatile long *val)
20 {
21  return __sync_add_and_fetch(val, 1);
22 }
23 
24 static inline long os_atomic_dec_long(volatile long *val)
25 {
26  return __sync_sub_and_fetch(val, 1);
27 }
28 
29 static inline long os_atomic_set_long(volatile long *ptr, long val)
30 {
31  return __sync_lock_test_and_set(ptr, val);
32 }
33 
34 static inline long os_atomic_load_long(const volatile long *ptr)
35 {
36  return __atomic_load_n(ptr, __ATOMIC_SEQ_CST);
37 }
38 
39 static inline bool os_atomic_compare_swap_long(volatile long *val,
40  long old_val, long new_val)
41 {
42  return __sync_bool_compare_and_swap(val, old_val, new_val);
43 }
44 
45 static inline bool os_atomic_set_bool(volatile bool *ptr, bool val)
46 {
47  return __sync_lock_test_and_set(ptr, val);
48 }
49 
50 static inline bool os_atomic_load_bool(const volatile bool *ptr)
51 {
52  return __atomic_load_n(ptr, __ATOMIC_SEQ_CST);
53 }