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Diffstat (limited to 'gcc/ginclude')
| -rw-r--r-- | gcc/ginclude/stdatomic.h | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/gcc/ginclude/stdatomic.h b/gcc/ginclude/stdatomic.h new file mode 100644 index 0000000..622577f --- /dev/null +++ b/gcc/ginclude/stdatomic.h @@ -0,0 +1,244 @@ +/* Copyright (C) 2013 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 +<http://www.gnu.org/licenses/>. */ + +/* ISO C11 Standard: 7.17 Atomics <stdatomic.h>. */ + +#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; +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; + + +#define ATOMIC_VAR_INIT(VALUE) (VALUE) +#define atomic_init(PTR, VAL) \ + do \ + { \ + *(PTR) = (VAL); \ + } \ + while (0) + +#define kill_dependency(Y) \ + __extension__ \ + ({ \ + __typeof__ (Y) __kill_dependency_tmp = (Y); \ + __kill_dependency_tmp; \ + }) + +#define atomic_thread_fence(MO) __atomic_thread_fence (MO) +#define atomic_signal_fence(MO) __atomic_signal_fence (MO) +#define atomic_is_lock_free(OBJ) __atomic_is_lock_free (sizeof (*(OBJ)), (OBJ)) + +#define __atomic_type_lock_free(T) \ + (__atomic_always_lock_free (sizeof (T), (void *) 0) \ + ? 2 \ + : (__atomic_is_lock_free (sizeof (T), (void *) 0) ? 1 : 0)) +#define ATOMIC_BOOL_LOCK_FREE \ + __atomic_type_lock_free (atomic_bool) +#define ATOMIC_CHAR_LOCK_FREE \ + __atomic_type_lock_free (atomic_char) +#define ATOMIC_CHAR16_T_LOCK_FREE \ + __atomic_type_lock_free (atomic_char16_t) +#define ATOMIC_CHAR32_T_LOCK_FREE \ + __atomic_type_lock_free (atomic_char32_t) +#define ATOMIC_WCHAR_T_LOCK_FREE \ + __atomic_type_lock_free (atomic_wchar_t) +#define ATOMIC_SHORT_LOCK_FREE \ + __atomic_type_lock_free (atomic_short) +#define ATOMIC_INT_LOCK_FREE \ + __atomic_type_lock_free (atomic_int) +#define ATOMIC_LONG_LOCK_FREE \ + __atomic_type_lock_free (atomic_long) +#define ATOMIC_LLONG_LOCK_FREE \ + __atomic_type_lock_free (atomic_llong) +#define ATOMIC_POINTER_LOCK_FREE \ + __atomic_type_lock_free (void * _Atomic) + + +/* Note that these macros require __typeof__ 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__ \ + ({ \ + __typeof__ (*(PTR)) __atomic_store_tmp = (VAL); \ + __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__ \ + ({ \ + __typeof__ (*(PTR)) __atomic_load_tmp; \ + __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__ \ + ({ \ + __typeof__ (*(PTR)) __atomic_exchange_val = (VAL), __atomic_exchange_tmp; \ + __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__ \ + ({ \ + __typeof__ (*(PTR)) __atomic_compare_exchange_tmp = (DES); \ + __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__ \ + ({ \ + __typeof__ (*(PTR)) __atomic_compare_exchange_tmp = (DES); \ + __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 } + + +#define atomic_flag_test_and_set(PTR) \ + __atomic_test_and_set ((PTR), __ATOMIC_SEQ_CST) +#define atomic_flag_test_and_set_explicit(PTR, MO) \ + __atomic_test_and_set ((PTR), (MO)) + +#define atomic_flag_clear(PTR) __atomic_clear ((PTR), __ATOMIC_SEQ_CST) +#define atomic_flag_clear_explicit(PTR, MO) __atomic_clear ((PTR), (MO)) + +#endif /* _STDATOMIC_H */ |