| 1 | /* stdatomic.h: The ABC representation of standard C library.
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| 2 | * C11 7.17: The header <stdatomic.h> defines several macros and declares several
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| 3 | * types and functions for performing atomic operations on data shared
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| 4 | * between threads.
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| 5 | */
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| 6 |
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| 7 | #ifndef _STDATOMIC_
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| 8 | #define _STDATOMIC_
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| 9 |
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| 10 | #include <stddef.h>
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| 11 | #include <stdint.h>
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| 12 |
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| 13 | /* Types */
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| 14 | typedef enum memory_order{ //defines memory ordering constraints
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| 15 | memory_order_relaxed,
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| 16 | memory_order_consume,
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| 17 | memory_order_acquire,
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| 18 | memory_order_release,
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| 19 | memory_order_acq_rel,
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| 20 | memory_order_seq_cst
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| 21 | }memory_order;
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| 22 |
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| 23 | /* lock-free atomic boolean flag */
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| 24 | typedef struct atomic_flag atomic_flag;
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| 25 |
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| 26 | typedef unsigned long int char16_t;
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| 27 | typedef unsigned long int char32_t;
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| 28 |
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| 29 | /* Atomic types */
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| 30 | typedef _Atomic _Bool atomic_bool;
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| 31 | typedef _Atomic char atomic_char;
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| 32 | typedef _Atomic signed char atomic_schar;
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| 33 | typedef _Atomic unsigned char atomic_uchar;
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| 34 | typedef _Atomic short atomic_short;
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| 35 | typedef _Atomic unsigned short atomic_ushort;
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| 36 | typedef _Atomic int atomic_int;
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| 37 | typedef _Atomic unsigned int atomic_uint;
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| 38 | typedef _Atomic long atomic_long;
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| 39 | typedef _Atomic unsigned long atomic_ulong;
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| 40 | typedef _Atomic long long atomic_llong;
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| 41 | typedef _Atomic unsigned long long atomic_ullong;
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| 42 | typedef _Atomic char16_t atomic_char16_t;
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| 43 | typedef _Atomic char32_t atomic_char32_t;
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| 44 | typedef _Atomic wchar_t atomic_wchar_t;
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| 45 | typedef _Atomic int_least8_t atomic_int_least8_t;
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| 46 | typedef _Atomic uint_least8_t atomic_uint_least8_t;
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| 47 | typedef _Atomic int_least16_t atomic_int_least16_t;
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| 48 | typedef _Atomic uint_least16_t atomic_uint_least16_t;
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| 49 | typedef _Atomic int_least32_t atomic_int_least32_t;
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| 50 | typedef _Atomic uint_least32_t atomic_uint_least32_t;
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| 51 | typedef _Atomic int_least64_t atomic_int_least64_t;
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| 52 | typedef _Atomic uint_least64_t atomic_uint_least64_t;
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| 53 | typedef _Atomic int_fast8_t atomic_int_fast8_t;
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| 54 | typedef _Atomic uint_fast8_t atomic_uint_fast8_t;
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| 55 | typedef _Atomic int_fast16_t atomic_int_fast16_t;
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| 56 | typedef _Atomic uint_fast16_t atomic_uint_fast16_t;
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| 57 | typedef _Atomic int_fast32_t atomic_int_fast32_t;
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| 58 | typedef _Atomic uint_fast32_t atomic_uint_fast32_t;
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| 59 | typedef _Atomic int_fast64_t atomic_int_fast64_t;
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| 60 | typedef _Atomic uint_fast64_t atomic_uint_fast64_t;
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| 61 | typedef _Atomic intptr_t atomic_intptr_t;
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| 62 | typedef _Atomic uintptr_t atomic_uintptr_t;
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| 63 | typedef _Atomic size_t atomic_size_t;
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| 64 | typedef _Atomic ptrdiff_t atomic_ptrdiff_t;
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| 65 | typedef _Atomic intmax_t atomic_intmax_t;
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| 66 | typedef _Atomic uintmax_t atomic_uintmax_t;
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| 67 |
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| 68 | typedef struct A A;
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| 69 | typedef struct C C;
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| 70 | typedef struct M M;
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| 71 |
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| 72 | /* Macros */
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| 73 | #define ATOMIC_BOOL_LOCK_FREE _ABC_ATOMIC_BOOL_LOCK_FREE
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| 74 | #define ATOMIC_CHAR_LOCK_FREE _ABC_ATOMIC_CHAR_LOCK_FREE
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| 75 | #define ATOMIC_CHAR16_T_LOCK_FREE _ABC_ATOMIC_CHAR16_T_LOCK_FREE
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| 76 | #define ATOMIC_CHAR32_T_LOCK_FREE _ABC_ATOMIC_CHAR32_T_LOCK_FREE
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| 77 | #define ATOMIC_WCHAR_T_LOCK_FREE _ABC_ATOMIC_WCHAR_T_LOCK_FREE
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| 78 | #define ATOMIC_SHORT_T_LOCK_FREE _ABC_ATOMIC_SHORT_T_LOCK_FREE
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| 79 | #define ATOMIC_INT_T_LOCK_FREE _ABC_ATOMIC_INT_T_LOCK_FREE
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| 80 | #define ATOMIC_LONG_T_LOCK_FREE _ABC_ATOMIC_LONG_T_LOCK_FREE
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| 81 | #define ATOMIC_LLONG_T_LOCK_FREE _ABC_ATOMIC_LLONG_T_LOCK_FREE
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| 82 | #define ATOMIC_POINTER_T_LOCK_FREE _ABC_ATOMIC_POINTER_T_LOCK_FREE
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| 83 |
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| 84 | #define ATOMIC_FLAG_INIT 0
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| 85 | #define ATOMIC_VAR_INIT(value)
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| 86 | #define kill_dependency(y)
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| 87 |
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| 88 | /* Functions */
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| 89 | void atomic_thread_fence(memory_order);
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| 90 | void atomic_signal_fence(memory_order);
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| 91 | _Bool atomic_is_lock_free(const volatile A *);
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| 92 | void atomic_store(volatile A *, C);
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| 93 | void atomic_store_explicit(volatile A *, C, memory_order);
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| 94 | C atomic_load(volatile A *);
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| 95 | C atomic_load_explicit(volatile A *, memory_order);
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| 96 | C atomic_exchange(volatile A *, C);
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| 97 | C atomic_exchange_explicit(volatile A *, C, memory_order);
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| 98 | _Bool atomic_compare_exchange_strong(volatile A *, C *, C );
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| 99 | _Bool atomic_compare_exchange_strong_explicit(volatile A *, C *, C, memory_order, memory_order);
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| 100 | _Bool atomic_compare_exchange_weak(volatile A *, C *, C );
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| 101 | _Bool atomic_compare_exchange_weak_explicit(volatile A *, C *, C, memory_order, memory_order);
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| 102 | C atomic_fetch_key(volatile A *, M);
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| 103 | C atomic_fetch_key_explicit(volatile A *, M, memory_order);
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| 104 | _Bool atomic_flag_test_and_set(volatile atomic_flag *);
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| 105 | _Bool atomic_flag_test_and_set_explicit(volatile atomic_flag *, memory_order);
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| 106 | void atomic_flag_clear(volatile atomic_flag *);
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| 107 | void atomic_flag_clear_explicit(volatile atomic_flag *, memory_order);
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| 108 |
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| 109 | #endif
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