diff --git a/include/stdatomic.h b/include/stdatomic.h new file mode 100644 index 0000000..0c0e46d --- /dev/null +++ b/include/stdatomic.h @@ -0,0 +1,255 @@ +/* Copyright (C) 2013-2023 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 3, or (at your option) +any later version. + +GCC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +. */ + +/* ISO C11 Standard: 7.17 Atomics . */ + +#ifndef _STDATOMIC_H +#define _STDATOMIC_H + +typedef enum + { + memory_order_relaxed = __ATOMIC_RELAXED, + memory_order_consume = __ATOMIC_CONSUME, + memory_order_acquire = __ATOMIC_ACQUIRE, + memory_order_release = __ATOMIC_RELEASE, + memory_order_acq_rel = __ATOMIC_ACQ_REL, + memory_order_seq_cst = __ATOMIC_SEQ_CST + } memory_order; + + +typedef _Atomic _Bool atomic_bool; +typedef _Atomic char atomic_char; +typedef _Atomic signed char atomic_schar; +typedef _Atomic unsigned char atomic_uchar; +typedef _Atomic short atomic_short; +typedef _Atomic unsigned short atomic_ushort; +typedef _Atomic int atomic_int; +typedef _Atomic unsigned int atomic_uint; +typedef _Atomic long atomic_long; +typedef _Atomic unsigned long atomic_ulong; +typedef _Atomic long long atomic_llong; +typedef _Atomic unsigned long long atomic_ullong; +#ifdef __CHAR8_TYPE__ +typedef _Atomic __CHAR8_TYPE__ atomic_char8_t; +#endif +typedef _Atomic __CHAR16_TYPE__ atomic_char16_t; +typedef _Atomic __CHAR32_TYPE__ atomic_char32_t; +typedef _Atomic __WCHAR_TYPE__ atomic_wchar_t; +typedef _Atomic __INT_LEAST8_TYPE__ atomic_int_least8_t; +typedef _Atomic __UINT_LEAST8_TYPE__ atomic_uint_least8_t; +typedef _Atomic __INT_LEAST16_TYPE__ atomic_int_least16_t; +typedef _Atomic __UINT_LEAST16_TYPE__ atomic_uint_least16_t; +typedef _Atomic __INT_LEAST32_TYPE__ atomic_int_least32_t; +typedef _Atomic __UINT_LEAST32_TYPE__ atomic_uint_least32_t; +typedef _Atomic __INT_LEAST64_TYPE__ atomic_int_least64_t; +typedef _Atomic __UINT_LEAST64_TYPE__ atomic_uint_least64_t; +typedef _Atomic __INT_FAST8_TYPE__ atomic_int_fast8_t; +typedef _Atomic __UINT_FAST8_TYPE__ atomic_uint_fast8_t; +typedef _Atomic __INT_FAST16_TYPE__ atomic_int_fast16_t; +typedef _Atomic __UINT_FAST16_TYPE__ atomic_uint_fast16_t; +typedef _Atomic __INT_FAST32_TYPE__ atomic_int_fast32_t; +typedef _Atomic __UINT_FAST32_TYPE__ atomic_uint_fast32_t; +typedef _Atomic __INT_FAST64_TYPE__ atomic_int_fast64_t; +typedef _Atomic __UINT_FAST64_TYPE__ atomic_uint_fast64_t; +typedef _Atomic __INTPTR_TYPE__ atomic_intptr_t; +typedef _Atomic __UINTPTR_TYPE__ atomic_uintptr_t; +typedef _Atomic __SIZE_TYPE__ atomic_size_t; +typedef _Atomic __PTRDIFF_TYPE__ atomic_ptrdiff_t; +typedef _Atomic __INTMAX_TYPE__ atomic_intmax_t; +typedef _Atomic __UINTMAX_TYPE__ atomic_uintmax_t; + + +#if !(defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L) +#define ATOMIC_VAR_INIT(VALUE) (VALUE) +#endif + +/* Initialize an atomic object pointed to by PTR with VAL. */ +#define atomic_init(PTR, VAL) \ + atomic_store_explicit (PTR, VAL, __ATOMIC_RELAXED) + +#define kill_dependency(Y) \ + __extension__ \ + ({ \ + __auto_type __kill_dependency_tmp = (Y); \ + __kill_dependency_tmp; \ + }) + +extern void atomic_thread_fence (memory_order); +#define atomic_thread_fence(MO) __atomic_thread_fence (MO) +extern void atomic_signal_fence (memory_order); +#define atomic_signal_fence(MO) __atomic_signal_fence (MO) +#define atomic_is_lock_free(OBJ) __atomic_is_lock_free (sizeof (*(OBJ)), (OBJ)) + +#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE +#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE +#ifdef __GCC_ATOMIC_CHAR8_T_LOCK_FREE +#define ATOMIC_CHAR8_T_LOCK_FREE __GCC_ATOMIC_CHAR8_T_LOCK_FREE +#endif +#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE +#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE +#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE +#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE +#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE +#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE +#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE +#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE + + +/* Note that these macros require __auto_type to remove + _Atomic qualifiers (and const qualifiers, if those are valid on + macro operands). + + Also note that the header file uses the generic form of __atomic + builtins, which requires the address to be taken of the value + parameter, and then we pass that value on. This allows the macros + to work for any type, and the compiler is smart enough to convert + these to lock-free _N variants if possible, and throw away the + temps. */ + +#define atomic_store_explicit(PTR, VAL, MO) \ + __extension__ \ + ({ \ + __auto_type __atomic_store_ptr = (PTR); \ + __typeof__ ((void)0, *__atomic_store_ptr) __atomic_store_tmp = (VAL); \ + __atomic_store (__atomic_store_ptr, &__atomic_store_tmp, (MO)); \ + }) + +#define atomic_store(PTR, VAL) \ + atomic_store_explicit (PTR, VAL, __ATOMIC_SEQ_CST) + + +#define atomic_load_explicit(PTR, MO) \ + __extension__ \ + ({ \ + __auto_type __atomic_load_ptr = (PTR); \ + __typeof__ ((void)0, *__atomic_load_ptr) __atomic_load_tmp; \ + __atomic_load (__atomic_load_ptr, &__atomic_load_tmp, (MO)); \ + __atomic_load_tmp; \ + }) + +#define atomic_load(PTR) atomic_load_explicit (PTR, __ATOMIC_SEQ_CST) + + +#define atomic_exchange_explicit(PTR, VAL, MO) \ + __extension__ \ + ({ \ + __auto_type __atomic_exchange_ptr = (PTR); \ + __typeof__ ((void)0, *__atomic_exchange_ptr) __atomic_exchange_val = (VAL); \ + __typeof__ ((void)0, *__atomic_exchange_ptr) __atomic_exchange_tmp; \ + __atomic_exchange (__atomic_exchange_ptr, &__atomic_exchange_val, \ + &__atomic_exchange_tmp, (MO)); \ + __atomic_exchange_tmp; \ + }) + +#define atomic_exchange(PTR, VAL) \ + atomic_exchange_explicit (PTR, VAL, __ATOMIC_SEQ_CST) + + +#define atomic_compare_exchange_strong_explicit(PTR, VAL, DES, SUC, FAIL) \ + __extension__ \ + ({ \ + __auto_type __atomic_compare_exchange_ptr = (PTR); \ + __typeof__ ((void)0, *__atomic_compare_exchange_ptr) __atomic_compare_exchange_tmp \ + = (DES); \ + __atomic_compare_exchange (__atomic_compare_exchange_ptr, (VAL), \ + &__atomic_compare_exchange_tmp, 0, \ + (SUC), (FAIL)); \ + }) + +#define atomic_compare_exchange_strong(PTR, VAL, DES) \ + atomic_compare_exchange_strong_explicit (PTR, VAL, DES, __ATOMIC_SEQ_CST, \ + __ATOMIC_SEQ_CST) + +#define atomic_compare_exchange_weak_explicit(PTR, VAL, DES, SUC, FAIL) \ + __extension__ \ + ({ \ + __auto_type __atomic_compare_exchange_ptr = (PTR); \ + __typeof__ ((void)0, *__atomic_compare_exchange_ptr) __atomic_compare_exchange_tmp \ + = (DES); \ + __atomic_compare_exchange (__atomic_compare_exchange_ptr, (VAL), \ + &__atomic_compare_exchange_tmp, 1, \ + (SUC), (FAIL)); \ + }) + +#define atomic_compare_exchange_weak(PTR, VAL, DES) \ + atomic_compare_exchange_weak_explicit (PTR, VAL, DES, __ATOMIC_SEQ_CST, \ + __ATOMIC_SEQ_CST) + + + +#define atomic_fetch_add(PTR, VAL) __atomic_fetch_add ((PTR), (VAL), \ + __ATOMIC_SEQ_CST) +#define atomic_fetch_add_explicit(PTR, VAL, MO) \ + __atomic_fetch_add ((PTR), (VAL), (MO)) + +#define atomic_fetch_sub(PTR, VAL) __atomic_fetch_sub ((PTR), (VAL), \ + __ATOMIC_SEQ_CST) +#define atomic_fetch_sub_explicit(PTR, VAL, MO) \ + __atomic_fetch_sub ((PTR), (VAL), (MO)) + +#define atomic_fetch_or(PTR, VAL) __atomic_fetch_or ((PTR), (VAL), \ + __ATOMIC_SEQ_CST) +#define atomic_fetch_or_explicit(PTR, VAL, MO) \ + __atomic_fetch_or ((PTR), (VAL), (MO)) + +#define atomic_fetch_xor(PTR, VAL) __atomic_fetch_xor ((PTR), (VAL), \ + __ATOMIC_SEQ_CST) +#define atomic_fetch_xor_explicit(PTR, VAL, MO) \ + __atomic_fetch_xor ((PTR), (VAL), (MO)) + +#define atomic_fetch_and(PTR, VAL) __atomic_fetch_and ((PTR), (VAL), \ + __ATOMIC_SEQ_CST) +#define atomic_fetch_and_explicit(PTR, VAL, MO) \ + __atomic_fetch_and ((PTR), (VAL), (MO)) + + +typedef _Atomic struct +{ +#if __GCC_ATOMIC_TEST_AND_SET_TRUEVAL == 1 + _Bool __val; +#else + unsigned char __val; +#endif +} atomic_flag; + +#define ATOMIC_FLAG_INIT { 0 } + + +extern _Bool atomic_flag_test_and_set (volatile atomic_flag *); +#define atomic_flag_test_and_set(PTR) \ + __atomic_test_and_set ((PTR), __ATOMIC_SEQ_CST) +extern _Bool atomic_flag_test_and_set_explicit (volatile atomic_flag *, + memory_order); +#define atomic_flag_test_and_set_explicit(PTR, MO) \ + __atomic_test_and_set ((PTR), (MO)) + +extern void atomic_flag_clear (volatile atomic_flag *); +#define atomic_flag_clear(PTR) __atomic_clear ((PTR), __ATOMIC_SEQ_CST) +extern void atomic_flag_clear_explicit (volatile atomic_flag *, memory_order); +#define atomic_flag_clear_explicit(PTR, MO) __atomic_clear ((PTR), (MO)) + +#if defined __STDC_VERSION__ && __STDC_VERSION__ > 201710L +#define __STDC_VERSION_STDATOMIC_H__ 202311L +#endif + +#endif /* _STDATOMIC_H */