stdatomic.h 5.6 KB

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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
  7. * version 2.1 of the License, or (at your option) any later version.
  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. #ifndef COMPAT_ATOMICS_WIN32_STDATOMIC_H
  19. #define COMPAT_ATOMICS_WIN32_STDATOMIC_H
  20. #define WIN32_LEAN_AND_MEAN
  21. #include <stddef.h>
  22. #include <stdint.h>
  23. #include <windows.h>
  24. #define ATOMIC_FLAG_INIT 0
  25. #define ATOMIC_VAR_INIT(value) (value)
  26. #define atomic_init(obj, value) \
  27. do { \
  28. *(obj) = (value); \
  29. } while(0)
  30. #define kill_dependency(y) ((void)0)
  31. #define atomic_thread_fence(order) \
  32. MemoryBarrier();
  33. #define atomic_signal_fence(order) \
  34. ((void)0)
  35. #define atomic_is_lock_free(obj) 0
  36. typedef intptr_t atomic_flag;
  37. typedef intptr_t atomic_bool;
  38. typedef intptr_t atomic_char;
  39. typedef intptr_t atomic_schar;
  40. typedef intptr_t atomic_uchar;
  41. typedef intptr_t atomic_short;
  42. typedef intptr_t atomic_ushort;
  43. typedef intptr_t atomic_int;
  44. typedef intptr_t atomic_uint;
  45. typedef intptr_t atomic_long;
  46. typedef intptr_t atomic_ulong;
  47. typedef intptr_t atomic_llong;
  48. typedef intptr_t atomic_ullong;
  49. typedef intptr_t atomic_wchar_t;
  50. typedef intptr_t atomic_int_least8_t;
  51. typedef intptr_t atomic_uint_least8_t;
  52. typedef intptr_t atomic_int_least16_t;
  53. typedef intptr_t atomic_uint_least16_t;
  54. typedef intptr_t atomic_int_least32_t;
  55. typedef intptr_t atomic_uint_least32_t;
  56. typedef intptr_t atomic_int_least64_t;
  57. typedef intptr_t atomic_uint_least64_t;
  58. typedef intptr_t atomic_int_fast8_t;
  59. typedef intptr_t atomic_uint_fast8_t;
  60. typedef intptr_t atomic_int_fast16_t;
  61. typedef intptr_t atomic_uint_fast16_t;
  62. typedef intptr_t atomic_int_fast32_t;
  63. typedef intptr_t atomic_uint_fast32_t;
  64. typedef intptr_t atomic_int_fast64_t;
  65. typedef intptr_t atomic_uint_fast64_t;
  66. typedef intptr_t atomic_intptr_t;
  67. typedef intptr_t atomic_uintptr_t;
  68. typedef intptr_t atomic_size_t;
  69. typedef intptr_t atomic_ptrdiff_t;
  70. typedef intptr_t atomic_intmax_t;
  71. typedef intptr_t atomic_uintmax_t;
  72. #define atomic_store(object, desired) \
  73. do { \
  74. *(object) = (desired); \
  75. MemoryBarrier(); \
  76. } while (0)
  77. #define atomic_store_explicit(object, desired, order) \
  78. atomic_store(object, desired)
  79. #define atomic_load(object) \
  80. (MemoryBarrier(), *(object))
  81. #define atomic_load_explicit(object, order) \
  82. atomic_load(object)
  83. #define atomic_exchange(object, desired) \
  84. InterlockedExchangePointer((PVOID volatile *)object, (PVOID)desired)
  85. #define atomic_exchange_explicit(object, desired, order) \
  86. atomic_exchange(object, desired)
  87. static inline int atomic_compare_exchange_strong(intptr_t *object, intptr_t *expected,
  88. intptr_t desired)
  89. {
  90. intptr_t old = *expected;
  91. *expected = (intptr_t)InterlockedCompareExchangePointer(
  92. (PVOID *)object, (PVOID)desired, (PVOID)old);
  93. return *expected == old;
  94. }
  95. #define atomic_compare_exchange_strong_explicit(object, expected, desired, success, failure) \
  96. atomic_compare_exchange_strong(object, expected, desired)
  97. #define atomic_compare_exchange_weak(object, expected, desired) \
  98. atomic_compare_exchange_strong(object, expected, desired)
  99. #define atomic_compare_exchange_weak_explicit(object, expected, desired, success, failure) \
  100. atomic_compare_exchange_weak(object, expected, desired)
  101. #ifdef _WIN64
  102. #define atomic_fetch_add(object, operand) \
  103. InterlockedExchangeAdd64(object, operand)
  104. #define atomic_fetch_sub(object, operand) \
  105. InterlockedExchangeAdd64(object, -(operand))
  106. #define atomic_fetch_or(object, operand) \
  107. InterlockedOr64(object, operand)
  108. #define atomic_fetch_xor(object, operand) \
  109. InterlockedXor64(object, operand)
  110. #define atomic_fetch_and(object, operand) \
  111. InterlockedAnd64(object, operand)
  112. #else
  113. #define atomic_fetch_add(object, operand) \
  114. InterlockedExchangeAdd(object, operand)
  115. #define atomic_fetch_sub(object, operand) \
  116. InterlockedExchangeAdd(object, -(operand))
  117. #define atomic_fetch_or(object, operand) \
  118. InterlockedOr(object, operand)
  119. #define atomic_fetch_xor(object, operand) \
  120. InterlockedXor(object, operand)
  121. #define atomic_fetch_and(object, operand) \
  122. InterlockedAnd(object, operand)
  123. #endif /* _WIN64 */
  124. #define atomic_fetch_add_explicit(object, operand, order) \
  125. atomic_fetch_add(object, operand)
  126. #define atomic_fetch_sub_explicit(object, operand, order) \
  127. atomic_fetch_sub(object, operand)
  128. #define atomic_fetch_or_explicit(object, operand, order) \
  129. atomic_fetch_or(object, operand)
  130. #define atomic_fetch_xor_explicit(object, operand, order) \
  131. atomic_fetch_xor(object, operand)
  132. #define atomic_fetch_and_explicit(object, operand, order) \
  133. atomic_fetch_and(object, operand)
  134. #define atomic_flag_test_and_set(object) \
  135. atomic_exchange(object, 1)
  136. #define atomic_flag_test_and_set_explicit(object, order) \
  137. atomic_flag_test_and_set(object)
  138. #define atomic_flag_clear(object) \
  139. atomic_store(object, 0)
  140. #define atomic_flag_clear_explicit(object, order) \
  141. atomic_flag_clear(object)
  142. #endif /* COMPAT_ATOMICS_WIN32_STDATOMIC_H */