Open Broadcaster Software
Free, open source software for live streaming and recording
threading-windows.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 #include <intrin.h>
20 
21 static inline long os_atomic_inc_long(volatile long *val)
22 {
23  return _InterlockedIncrement(val);
24 }
25 
26 static inline long os_atomic_dec_long(volatile long *val)
27 {
28  return _InterlockedDecrement(val);
29 }
30 
31 static inline long os_atomic_set_long(volatile long *ptr, long val)
32 {
33  return (long)_InterlockedExchange((volatile long*)ptr, (long)val);
34 }
35 
36 static inline long os_atomic_load_long(const volatile long *ptr)
37 {
38  return (long)_InterlockedOr((volatile long*)ptr, 0);
39 }
40 
41 static inline bool os_atomic_compare_swap_long(volatile long *val,
42  long old_val, long new_val)
43 {
44  return _InterlockedCompareExchange(val, new_val, old_val) == old_val;
45 }
46 
47 static inline bool os_atomic_set_bool(volatile bool *ptr, bool val)
48 {
49  return !!_InterlockedExchange8((volatile char*)ptr, (char)val);
50 }
51 
52 static inline bool os_atomic_load_bool(const volatile bool *ptr)
53 {
54  return !!_InterlockedOr8((volatile char*)ptr, 0);
55 }