FFmpeg
stdatomic.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
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8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef COMPAT_ATOMICS_WIN32_STDATOMIC_H
20 #define COMPAT_ATOMICS_WIN32_STDATOMIC_H
21 
22 #include <stddef.h>
23 #include <stdint.h>
24 #include <windows.h>
25 
26 #define ATOMIC_FLAG_INIT 0
27 
28 #define ATOMIC_VAR_INIT(value) (value)
29 
30 #define atomic_init(obj, value) \
31 do { \
32  *(obj) = (value); \
33 } while(0)
34 
35 #define kill_dependency(y) ((void)0)
36 
37 #define atomic_thread_fence(order) \
38  MemoryBarrier();
39 
40 #define atomic_signal_fence(order) \
41  ((void)0)
42 
43 #define atomic_is_lock_free(obj) 0
44 
45 typedef intptr_t atomic_flag;
46 typedef intptr_t atomic_bool;
47 typedef intptr_t atomic_char;
48 typedef intptr_t atomic_schar;
49 typedef intptr_t atomic_uchar;
50 typedef intptr_t atomic_short;
51 typedef intptr_t atomic_ushort;
52 typedef intptr_t atomic_int;
53 typedef intptr_t atomic_uint;
54 typedef intptr_t atomic_long;
55 typedef intptr_t atomic_ulong;
56 typedef intptr_t atomic_llong;
57 typedef intptr_t atomic_ullong;
58 typedef intptr_t atomic_wchar_t;
59 typedef intptr_t atomic_int_least8_t;
60 typedef intptr_t atomic_uint_least8_t;
61 typedef intptr_t atomic_int_least16_t;
62 typedef intptr_t atomic_uint_least16_t;
63 typedef intptr_t atomic_int_least32_t;
64 typedef intptr_t atomic_uint_least32_t;
65 typedef intptr_t atomic_int_least64_t;
66 typedef intptr_t atomic_uint_least64_t;
67 typedef intptr_t atomic_int_fast8_t;
68 typedef intptr_t atomic_uint_fast8_t;
69 typedef intptr_t atomic_int_fast16_t;
70 typedef intptr_t atomic_uint_fast16_t;
71 typedef intptr_t atomic_int_fast32_t;
72 typedef intptr_t atomic_uint_fast32_t;
73 typedef intptr_t atomic_int_fast64_t;
74 typedef intptr_t atomic_uint_fast64_t;
75 typedef intptr_t atomic_intptr_t;
76 typedef intptr_t atomic_uintptr_t;
77 typedef intptr_t atomic_size_t;
78 typedef intptr_t atomic_ptrdiff_t;
79 typedef intptr_t atomic_intmax_t;
80 typedef intptr_t atomic_uintmax_t;
81 
82 #define atomic_store(object, desired) \
83 do { \
84  *(object) = (desired); \
85  MemoryBarrier(); \
86 } while (0)
87 
88 #define atomic_store_explicit(object, desired, order) \
89  atomic_store(object, desired)
90 
91 #define atomic_load(object) \
92  (MemoryBarrier(), *(object))
93 
94 #define atomic_load_explicit(object, order) \
95  atomic_load(object)
96 
97 #define atomic_exchange(object, desired) \
98  InterlockedExchangePointer((PVOID volatile *)object, (PVOID)desired)
99 
100 #define atomic_exchange_explicit(object, desired, order) \
101  atomic_exchange(object, desired)
102 
103 static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected,
104  intptr_t desired)
105 {
106  intptr_t old = *expected;
107  *expected = (intptr_t)InterlockedCompareExchangePointer(
108  (PVOID *)object, (PVOID)desired, (PVOID)old);
109  return *expected == old;
110 }
111 
112 #define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
113  atomic_compare_exchange_strong(object, expected, desired)
114 
115 #define atomic_compare_exchange_weak(object, expected, desired) \
116  atomic_compare_exchange_strong(object, expected, desired)
117 
118 #define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
119  atomic_compare_exchange_weak(object, expected, desired)
120 
121 #ifdef _WIN64
122 #define atomic_fetch_add(object, operand) \
123  InterlockedExchangeAdd64(object, operand)
124 
125 #define atomic_fetch_sub(object, operand) \
126  InterlockedExchangeAdd64(object, -(operand))
127 
128 #define atomic_fetch_or(object, operand) \
129  InterlockedOr64(object, operand)
130 
131 #define atomic_fetch_xor(object, operand) \
132  InterlockedXor64(object, operand)
133 
134 #define atomic_fetch_and(object, operand) \
135  InterlockedAnd64(object, operand)
136 #else
137 #define atomic_fetch_add(object, operand) \
138  InterlockedExchangeAdd(object, operand)
139 
140 #define atomic_fetch_sub(object, operand) \
141  InterlockedExchangeAdd(object, -(operand))
142 
143 #define atomic_fetch_or(object, operand) \
144  InterlockedOr(object, operand)
145 
146 #define atomic_fetch_xor(object, operand) \
147  InterlockedXor(object, operand)
148 
149 #define atomic_fetch_and(object, operand) \
150  InterlockedAnd(object, operand)
151 #endif /* _WIN64 */
152 
153 #define atomic_fetch_add_explicit(object, operand, order) \
154  atomic_fetch_add(object, operand)
155 
156 #define atomic_fetch_sub_explicit(object, operand, order) \
157  atomic_fetch_sub(object, operand)
158 
159 #define atomic_fetch_or_explicit(object, operand, order) \
160  atomic_fetch_or(object, operand)
161 
162 #define atomic_fetch_xor_explicit(object, operand, order) \
163  atomic_fetch_xor(object, operand)
164 
165 #define atomic_fetch_and_explicit(object, operand, order) \
166  atomic_fetch_and(object, operand)
167 
168 #define atomic_flag_test_and_set(object) \
169  atomic_exchange(object, 1)
170 
171 #define atomic_flag_test_and_set_explicit(object, order) \
172  atomic_flag_test_and_set(object)
173 
174 #define atomic_flag_clear(object) \
175  atomic_store(object, 0)
176 
177 #define atomic_flag_clear_explicit(object, order) \
178  atomic_flag_clear(object)
179 
180 #endif /* COMPAT_ATOMICS_WIN32_STDATOMIC_H */
atomic_char
intptr_t atomic_char
Definition: stdatomic.h:50
atomic_ptrdiff_t
intptr_t atomic_ptrdiff_t
Definition: stdatomic.h:81
atomic_wchar_t
intptr_t atomic_wchar_t
Definition: stdatomic.h:61
atomic_uint_least8_t
intptr_t atomic_uint_least8_t
Definition: stdatomic.h:63
atomic_ushort
intptr_t atomic_ushort
Definition: stdatomic.h:54
atomic_bool
intptr_t atomic_bool
Definition: stdatomic.h:49
atomic_uint_fast8_t
intptr_t atomic_uint_fast8_t
Definition: stdatomic.h:71
atomic_int
intptr_t atomic_int
Definition: stdatomic.h:55
atomic_int_least8_t
intptr_t atomic_int_least8_t
Definition: stdatomic.h:62
atomic_flag
intptr_t atomic_flag
Definition: stdatomic.h:48
atomic_int_fast32_t
intptr_t atomic_int_fast32_t
Definition: stdatomic.h:74
atomic_long
intptr_t atomic_long
Definition: stdatomic.h:57
atomic_int_fast16_t
intptr_t atomic_int_fast16_t
Definition: stdatomic.h:72
atomic_uintptr_t
intptr_t atomic_uintptr_t
Definition: stdatomic.h:79
atomic_size_t
intptr_t atomic_size_t
Definition: stdatomic.h:80
atomic_llong
intptr_t atomic_llong
Definition: stdatomic.h:59
atomic_int_least32_t
intptr_t atomic_int_least32_t
Definition: stdatomic.h:66
atomic_int_fast8_t
intptr_t atomic_int_fast8_t
Definition: stdatomic.h:70
atomic_schar
intptr_t atomic_schar
Definition: stdatomic.h:51
atomic_ulong
intptr_t atomic_ulong
Definition: stdatomic.h:58
atomic_uint_fast16_t
intptr_t atomic_uint_fast16_t
Definition: stdatomic.h:73
atomic_int_least16_t
intptr_t atomic_int_least16_t
Definition: stdatomic.h:64
atomic_uchar
intptr_t atomic_uchar
Definition: stdatomic.h:52
atomic_uint_least16_t
intptr_t atomic_uint_least16_t
Definition: stdatomic.h:65
atomic_intmax_t
intptr_t atomic_intmax_t
Definition: stdatomic.h:82
atomic_ullong
intptr_t atomic_ullong
Definition: stdatomic.h:60
atomic_uint_fast32_t
intptr_t atomic_uint_fast32_t
Definition: stdatomic.h:75
atomic_uint_least32_t
intptr_t atomic_uint_least32_t
Definition: stdatomic.h:67
atomic_int_least64_t
intptr_t atomic_int_least64_t
Definition: stdatomic.h:68
atomic_int_fast64_t
intptr_t atomic_int_fast64_t
Definition: stdatomic.h:76
atomic_intptr_t
intptr_t atomic_intptr_t
Definition: stdatomic.h:78
atomic_short
intptr_t atomic_short
Definition: stdatomic.h:53
atomic_uint
intptr_t atomic_uint
Definition: stdatomic.h:56
atomic_compare_exchange_strong
static int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected, intptr_t desired)
Definition: stdatomic.h:103
atomic_uint_fast64_t
intptr_t atomic_uint_fast64_t
Definition: stdatomic.h:77
atomic_uintmax_t
intptr_t atomic_uintmax_t
Definition: stdatomic.h:83
atomic_uint_least64_t
intptr_t atomic_uint_least64_t
Definition: stdatomic.h:69