| 1 | /* Copyright (C) 2013-2015 Free Software Foundation, Inc.
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| 2 |
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| 3 | This file is part of GCC.
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| 4 |
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| 5 | GCC is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 3, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | GCC is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | Under Section 7 of GPL version 3, you are granted additional
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| 16 | permissions described in the GCC Runtime Library Exception, version
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| 17 | 3.1, as published by the Free Software Foundation.
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| 18 |
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| 19 | You should have received a copy of the GNU General Public License and
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| 20 | a copy of the GCC Runtime Library Exception along with this program;
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| 21 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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| 22 | <http://www.gnu.org/licenses/>. */
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| 23 |
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| 24 | /* ISO C11 Standard: 7.17 Atomics <stdatomic.h>. */
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| 25 |
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| 26 | #ifndef _STDATOMIC_H
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| 27 | #define _STDATOMIC_H
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| 28 |
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| 29 | typedef enum
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| 30 | {
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| 31 | memory_order_relaxed = __ATOMIC_RELAXED,
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| 32 | memory_order_consume = __ATOMIC_CONSUME,
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| 33 | memory_order_acquire = __ATOMIC_ACQUIRE,
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| 34 | memory_order_release = __ATOMIC_RELEASE,
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| 35 | memory_order_acq_rel = __ATOMIC_ACQ_REL,
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| 36 | memory_order_seq_cst = __ATOMIC_SEQ_CST
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| 37 | } memory_order;
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| 38 |
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| 39 |
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| 40 | typedef _Atomic _Bool atomic_bool;
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| 41 | typedef _Atomic char atomic_char;
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| 42 | typedef _Atomic signed char atomic_schar;
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| 43 | typedef _Atomic unsigned char atomic_uchar;
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| 44 | typedef _Atomic short atomic_short;
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| 45 | typedef _Atomic unsigned short atomic_ushort;
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| 46 | typedef _Atomic int atomic_int;
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| 47 | typedef _Atomic unsigned int atomic_uint;
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| 48 | typedef _Atomic long atomic_long;
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| 49 | typedef _Atomic unsigned long atomic_ulong;
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| 50 | typedef _Atomic long long atomic_llong;
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| 51 | typedef _Atomic unsigned long long atomic_ullong;
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| 52 | typedef _Atomic __CHAR16_TYPE__ atomic_char16_t;
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| 53 | typedef _Atomic __CHAR32_TYPE__ atomic_char32_t;
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| 54 | typedef _Atomic __WCHAR_TYPE__ atomic_wchar_t;
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| 55 | typedef _Atomic __INT_LEAST8_TYPE__ atomic_int_least8_t;
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| 56 | typedef _Atomic __UINT_LEAST8_TYPE__ atomic_uint_least8_t;
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| 57 | typedef _Atomic __INT_LEAST16_TYPE__ atomic_int_least16_t;
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| 58 | typedef _Atomic __UINT_LEAST16_TYPE__ atomic_uint_least16_t;
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| 59 | typedef _Atomic __INT_LEAST32_TYPE__ atomic_int_least32_t;
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| 60 | typedef _Atomic __UINT_LEAST32_TYPE__ atomic_uint_least32_t;
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| 61 | typedef _Atomic __INT_LEAST64_TYPE__ atomic_int_least64_t;
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| 62 | typedef _Atomic __UINT_LEAST64_TYPE__ atomic_uint_least64_t;
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| 63 | typedef _Atomic __INT_FAST8_TYPE__ atomic_int_fast8_t;
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| 64 | typedef _Atomic __UINT_FAST8_TYPE__ atomic_uint_fast8_t;
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| 65 | typedef _Atomic __INT_FAST16_TYPE__ atomic_int_fast16_t;
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| 66 | typedef _Atomic __UINT_FAST16_TYPE__ atomic_uint_fast16_t;
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| 67 | typedef _Atomic __INT_FAST32_TYPE__ atomic_int_fast32_t;
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| 68 | typedef _Atomic __UINT_FAST32_TYPE__ atomic_uint_fast32_t;
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| 69 | typedef _Atomic __INT_FAST64_TYPE__ atomic_int_fast64_t;
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| 70 | typedef _Atomic __UINT_FAST64_TYPE__ atomic_uint_fast64_t;
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| 71 | typedef _Atomic __INTPTR_TYPE__ atomic_intptr_t;
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| 72 | typedef _Atomic __UINTPTR_TYPE__ atomic_uintptr_t;
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| 73 | typedef _Atomic __SIZE_TYPE__ atomic_size_t;
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| 74 | typedef _Atomic __PTRDIFF_TYPE__ atomic_ptrdiff_t;
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| 75 | typedef _Atomic __INTMAX_TYPE__ atomic_intmax_t;
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| 76 | typedef _Atomic __UINTMAX_TYPE__ atomic_uintmax_t;
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| 77 |
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| 78 |
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| 79 | #define ATOMIC_VAR_INIT(VALUE) (VALUE)
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| 80 | #define atomic_init(PTR, VAL) \
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| 81 | do \
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| 82 | { \
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| 83 | *(PTR) = (VAL); \
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| 84 | } \
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| 85 | while (0)
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| 86 |
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| 87 | #define kill_dependency(Y) \
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| 88 | __extension__ \
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| 89 | ({ \
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| 90 | __auto_type __kill_dependency_tmp = (Y); \
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| 91 | __kill_dependency_tmp; \
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| 92 | })
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| 93 |
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| 94 | #define atomic_thread_fence(MO) __atomic_thread_fence (MO)
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| 95 | #define atomic_signal_fence(MO) __atomic_signal_fence (MO)
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| 96 | #define atomic_is_lock_free(OBJ) __atomic_is_lock_free (sizeof (*(OBJ)), (OBJ))
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| 97 |
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| 98 | #define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
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| 99 | #define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
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| 100 | #define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
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| 101 | #define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
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| 102 | #define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
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| 103 | #define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
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| 104 | #define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
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| 105 | #define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
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| 106 | #define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
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| 107 | #define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
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| 108 |
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| 109 |
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| 110 | /* Note that these macros require __typeof__ and __auto_type to remove
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| 111 | _Atomic qualifiers (and const qualifiers, if those are valid on
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| 112 | macro operands).
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| 113 |
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| 114 | Also note that the header file uses the generic form of __atomic
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| 115 | builtins, which requires the address to be taken of the value
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| 116 | parameter, and then we pass that value on. This allows the macros
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| 117 | to work for any type, and the compiler is smart enough to convert
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| 118 | these to lock-free _N variants if possible, and throw away the
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| 119 | temps. */
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| 120 |
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| 121 | #define atomic_store_explicit(PTR, VAL, MO) \
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| 122 | __extension__ \
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| 123 | ({ \
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| 124 | __auto_type __atomic_store_ptr = (PTR); \
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| 125 | __typeof__ (*__atomic_store_ptr) __atomic_store_tmp = (VAL); \
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| 126 | __atomic_store (__atomic_store_ptr, &__atomic_store_tmp, (MO)); \
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| 127 | })
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| 128 |
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| 129 | #define atomic_store(PTR, VAL) \
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| 130 | atomic_store_explicit (PTR, VAL, __ATOMIC_SEQ_CST)
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| 131 |
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| 132 |
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| 133 | #define atomic_load_explicit(PTR, MO) \
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| 134 | __extension__ \
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| 135 | ({ \
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| 136 | __auto_type __atomic_load_ptr = (PTR); \
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| 137 | __typeof__ (*__atomic_load_ptr) __atomic_load_tmp; \
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| 138 | __atomic_load (__atomic_load_ptr, &__atomic_load_tmp, (MO)); \
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| 139 | __atomic_load_tmp; \
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| 140 | })
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| 141 |
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| 142 | #define atomic_load(PTR) atomic_load_explicit (PTR, __ATOMIC_SEQ_CST)
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| 143 |
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| 144 |
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| 145 | #define atomic_exchange_explicit(PTR, VAL, MO) \
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| 146 | __extension__ \
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| 147 | ({ \
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| 148 | __auto_type __atomic_exchange_ptr = (PTR); \
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| 149 | __typeof__ (*__atomic_exchange_ptr) __atomic_exchange_val = (VAL); \
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| 150 | __typeof__ (*__atomic_exchange_ptr) __atomic_exchange_tmp; \
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| 151 | __atomic_exchange (__atomic_exchange_ptr, &__atomic_exchange_val, \
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| 152 | &__atomic_exchange_tmp, (MO)); \
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| 153 | __atomic_exchange_tmp; \
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| 154 | })
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| 155 |
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| 156 | #define atomic_exchange(PTR, VAL) \
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| 157 | atomic_exchange_explicit (PTR, VAL, __ATOMIC_SEQ_CST)
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| 158 |
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| 159 |
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| 160 | #define atomic_compare_exchange_strong_explicit(PTR, VAL, DES, SUC, FAIL) \
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| 161 | __extension__ \
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| 162 | ({ \
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| 163 | __auto_type __atomic_compare_exchange_ptr = (PTR); \
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| 164 | __typeof__ (*__atomic_compare_exchange_ptr) __atomic_compare_exchange_tmp \
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| 165 | = (DES); \
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| 166 | __atomic_compare_exchange (__atomic_compare_exchange_ptr, (VAL), \
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| 167 | &__atomic_compare_exchange_tmp, 0, \
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| 168 | (SUC), (FAIL)); \
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| 169 | })
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| 170 |
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| 171 | #define atomic_compare_exchange_strong(PTR, VAL, DES) \
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| 172 | atomic_compare_exchange_strong_explicit (PTR, VAL, DES, __ATOMIC_SEQ_CST, \
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| 173 | __ATOMIC_SEQ_CST)
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| 174 |
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| 175 | #define atomic_compare_exchange_weak_explicit(PTR, VAL, DES, SUC, FAIL) \
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| 176 | __extension__ \
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| 177 | ({ \
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| 178 | __auto_type __atomic_compare_exchange_ptr = (PTR); \
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| 179 | __typeof__ (*__atomic_compare_exchange_ptr) __atomic_compare_exchange_tmp \
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| 180 | = (DES); \
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| 181 | __atomic_compare_exchange (__atomic_compare_exchange_ptr, (VAL), \
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| 182 | &__atomic_compare_exchange_tmp, 1, \
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| 183 | (SUC), (FAIL)); \
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| 184 | })
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| 185 |
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| 186 | #define atomic_compare_exchange_weak(PTR, VAL, DES) \
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| 187 | atomic_compare_exchange_weak_explicit (PTR, VAL, DES, __ATOMIC_SEQ_CST, \
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| 188 | __ATOMIC_SEQ_CST)
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| 189 |
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| 190 |
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| 191 |
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| 192 | #define atomic_fetch_add(PTR, VAL) __atomic_fetch_add ((PTR), (VAL), \
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| 193 | __ATOMIC_SEQ_CST)
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| 194 | #define atomic_fetch_add_explicit(PTR, VAL, MO) \
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| 195 | __atomic_fetch_add ((PTR), (VAL), (MO))
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| 196 |
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| 197 | #define atomic_fetch_sub(PTR, VAL) __atomic_fetch_sub ((PTR), (VAL), \
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| 198 | __ATOMIC_SEQ_CST)
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| 199 | #define atomic_fetch_sub_explicit(PTR, VAL, MO) \
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| 200 | __atomic_fetch_sub ((PTR), (VAL), (MO))
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| 201 |
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| 202 | #define atomic_fetch_or(PTR, VAL) __atomic_fetch_or ((PTR), (VAL), \
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| 203 | __ATOMIC_SEQ_CST)
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| 204 | #define atomic_fetch_or_explicit(PTR, VAL, MO) \
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| 205 | __atomic_fetch_or ((PTR), (VAL), (MO))
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| 206 |
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| 207 | #define atomic_fetch_xor(PTR, VAL) __atomic_fetch_xor ((PTR), (VAL), \
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| 208 | __ATOMIC_SEQ_CST)
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| 209 | #define atomic_fetch_xor_explicit(PTR, VAL, MO) \
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| 210 | __atomic_fetch_xor ((PTR), (VAL), (MO))
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| 211 |
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| 212 | #define atomic_fetch_and(PTR, VAL) __atomic_fetch_and ((PTR), (VAL), \
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| 213 | __ATOMIC_SEQ_CST)
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| 214 | #define atomic_fetch_and_explicit(PTR, VAL, MO) \
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| 215 | __atomic_fetch_and ((PTR), (VAL), (MO))
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| 216 |
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| 217 |
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| 218 | typedef _Atomic struct
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| 219 | {
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| 220 | #if __GCC_ATOMIC_TEST_AND_SET_TRUEVAL == 1
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| 221 | _Bool __val;
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| 222 | #else
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| 223 | unsigned char __val;
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| 224 | #endif
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| 225 | } atomic_flag;
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| 226 |
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| 227 | #define ATOMIC_FLAG_INIT { 0 }
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| 228 |
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| 229 |
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| 230 | #define atomic_flag_test_and_set(PTR) \
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| 231 | __atomic_test_and_set ((PTR), __ATOMIC_SEQ_CST)
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| 232 | #define atomic_flag_test_and_set_explicit(PTR, MO) \
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| 233 | __atomic_test_and_set ((PTR), (MO))
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| 234 |
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| 235 | #define atomic_flag_clear(PTR) __atomic_clear ((PTR), __ATOMIC_SEQ_CST)
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| 236 | #define atomic_flag_clear_explicit(PTR, MO) __atomic_clear ((PTR), (MO))
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| 237 |
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| 238 | #endif /* _STDATOMIC_H */
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