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/* Copyright (C) 2013-2015 Free Software Foundation, Inc. |
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|
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This file is part of GCC. |
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|
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GCC is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3, or (at your option) |
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any later version. |
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|
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GCC is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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Under Section 7 of GPL version 3, you are granted additional |
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permissions described in the GCC Runtime Library Exception, version |
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3.1, as published by the Free Software Foundation. |
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|
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You should have received a copy of the GNU General Public License and |
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a copy of the GCC Runtime Library Exception along with this program; |
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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<http://www.gnu.org/licenses/>. */ |
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|
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/* ISO C11 Standard: 7.17 Atomics <stdatomic.h>. */ |
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|
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#ifndef _STDATOMIC_H |
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#define _STDATOMIC_H |
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|
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typedef enum |
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{ |
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memory_order_relaxed = __ATOMIC_RELAXED, |
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memory_order_consume = __ATOMIC_CONSUME, |
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memory_order_acquire = __ATOMIC_ACQUIRE, |
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memory_order_release = __ATOMIC_RELEASE, |
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memory_order_acq_rel = __ATOMIC_ACQ_REL, |
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memory_order_seq_cst = __ATOMIC_SEQ_CST |
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} memory_order; |
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|
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|
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typedef _Atomic _Bool atomic_bool; |
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typedef _Atomic char atomic_char; |
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typedef _Atomic signed char atomic_schar; |
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typedef _Atomic unsigned char atomic_uchar; |
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typedef _Atomic short atomic_short; |
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typedef _Atomic unsigned short atomic_ushort; |
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typedef _Atomic int atomic_int; |
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typedef _Atomic unsigned int atomic_uint; |
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typedef _Atomic long atomic_long; |
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typedef _Atomic unsigned long atomic_ulong; |
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typedef _Atomic long long atomic_llong; |
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typedef _Atomic unsigned long long atomic_ullong; |
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typedef _Atomic __CHAR16_TYPE__ atomic_char16_t; |
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typedef _Atomic __CHAR32_TYPE__ atomic_char32_t; |
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typedef _Atomic __WCHAR_TYPE__ atomic_wchar_t; |
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typedef _Atomic __INT_LEAST8_TYPE__ atomic_int_least8_t; |
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typedef _Atomic __UINT_LEAST8_TYPE__ atomic_uint_least8_t; |
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typedef _Atomic __INT_LEAST16_TYPE__ atomic_int_least16_t; |
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typedef _Atomic __UINT_LEAST16_TYPE__ atomic_uint_least16_t; |
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typedef _Atomic __INT_LEAST32_TYPE__ atomic_int_least32_t; |
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typedef _Atomic __UINT_LEAST32_TYPE__ atomic_uint_least32_t; |
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typedef _Atomic __INT_LEAST64_TYPE__ atomic_int_least64_t; |
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typedef _Atomic __UINT_LEAST64_TYPE__ atomic_uint_least64_t; |
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typedef _Atomic __INT_FAST8_TYPE__ atomic_int_fast8_t; |
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typedef _Atomic __UINT_FAST8_TYPE__ atomic_uint_fast8_t; |
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typedef _Atomic __INT_FAST16_TYPE__ atomic_int_fast16_t; |
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typedef _Atomic __UINT_FAST16_TYPE__ atomic_uint_fast16_t; |
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typedef _Atomic __INT_FAST32_TYPE__ atomic_int_fast32_t; |
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typedef _Atomic __UINT_FAST32_TYPE__ atomic_uint_fast32_t; |
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typedef _Atomic __INT_FAST64_TYPE__ atomic_int_fast64_t; |
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typedef _Atomic __UINT_FAST64_TYPE__ atomic_uint_fast64_t; |
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typedef _Atomic __INTPTR_TYPE__ atomic_intptr_t; |
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typedef _Atomic __UINTPTR_TYPE__ atomic_uintptr_t; |
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typedef _Atomic __SIZE_TYPE__ atomic_size_t; |
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typedef _Atomic __PTRDIFF_TYPE__ atomic_ptrdiff_t; |
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typedef _Atomic __INTMAX_TYPE__ atomic_intmax_t; |
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typedef _Atomic __UINTMAX_TYPE__ atomic_uintmax_t; |
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|
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|
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#define ATOMIC_VAR_INIT(VALUE) (VALUE) |
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#define atomic_init(PTR, VAL) \ |
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do \ |
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{ \ |
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*(PTR) = (VAL); \ |
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} \ |
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while (0) |
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|
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#define kill_dependency(Y) \ |
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__extension__ \ |
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({ \ |
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__auto_type __kill_dependency_tmp = (Y); \ |
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__kill_dependency_tmp; \ |
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}) |
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|
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#define atomic_thread_fence(MO) __atomic_thread_fence (MO) |
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#define atomic_signal_fence(MO) __atomic_signal_fence (MO) |
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#define atomic_is_lock_free(OBJ) __atomic_is_lock_free (sizeof (*(OBJ)), (OBJ)) |
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|
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#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE |
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#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE |
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#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE |
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#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE |
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#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE |
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#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE |
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#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE |
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#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE |
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#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE |
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#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE |
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|
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|
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/* Note that these macros require __typeof__ and __auto_type to remove |
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_Atomic qualifiers (and const qualifiers, if those are valid on |
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macro operands). |
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|
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Also note that the header file uses the generic form of __atomic |
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builtins, which requires the address to be taken of the value |
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parameter, and then we pass that value on. This allows the macros |
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to work for any type, and the compiler is smart enough to convert |
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these to lock-free _N variants if possible, and throw away the |
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temps. */ |
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|
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#define atomic_store_explicit(PTR, VAL, MO) \ |
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__extension__ \ |
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({ \ |
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__auto_type __atomic_store_ptr = (PTR); \ |
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__typeof__ (*__atomic_store_ptr) __atomic_store_tmp = (VAL); \ |
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__atomic_store (__atomic_store_ptr, &__atomic_store_tmp, (MO)); \ |
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}) |
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|
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#define atomic_store(PTR, VAL) \ |
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atomic_store_explicit (PTR, VAL, __ATOMIC_SEQ_CST) |
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|
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|
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#define atomic_load_explicit(PTR, MO) \ |
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__extension__ \ |
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({ \ |
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__auto_type __atomic_load_ptr = (PTR); \ |
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__typeof__ (*__atomic_load_ptr) __atomic_load_tmp; \ |
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__atomic_load (__atomic_load_ptr, &__atomic_load_tmp, (MO)); \ |
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__atomic_load_tmp; \ |
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}) |
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|
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#define atomic_load(PTR) atomic_load_explicit (PTR, __ATOMIC_SEQ_CST) |
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|
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|
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#define atomic_exchange_explicit(PTR, VAL, MO) \ |
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__extension__ \ |
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({ \ |
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__auto_type __atomic_exchange_ptr = (PTR); \ |
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__typeof__ (*__atomic_exchange_ptr) __atomic_exchange_val = (VAL); \ |
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__typeof__ (*__atomic_exchange_ptr) __atomic_exchange_tmp; \ |
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__atomic_exchange (__atomic_exchange_ptr, &__atomic_exchange_val, \ |
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&__atomic_exchange_tmp, (MO)); \ |
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__atomic_exchange_tmp; \ |
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}) |
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|
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#define atomic_exchange(PTR, VAL) \ |
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atomic_exchange_explicit (PTR, VAL, __ATOMIC_SEQ_CST) |
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|
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|
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#define atomic_compare_exchange_strong_explicit(PTR, VAL, DES, SUC, FAIL) \ |
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__extension__ \ |
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({ \ |
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__auto_type __atomic_compare_exchange_ptr = (PTR); \ |
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__typeof__ (*__atomic_compare_exchange_ptr) __atomic_compare_exchange_tmp \ |
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= (DES); \ |
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__atomic_compare_exchange (__atomic_compare_exchange_ptr, (VAL), \ |
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&__atomic_compare_exchange_tmp, 0, \ |
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(SUC), (FAIL)); \ |
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}) |
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|
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#define atomic_compare_exchange_strong(PTR, VAL, DES) \ |
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atomic_compare_exchange_strong_explicit (PTR, VAL, DES, __ATOMIC_SEQ_CST, \ |
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__ATOMIC_SEQ_CST) |
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|
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#define atomic_compare_exchange_weak_explicit(PTR, VAL, DES, SUC, FAIL) \ |
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__extension__ \ |
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({ \ |
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__auto_type __atomic_compare_exchange_ptr = (PTR); \ |
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__typeof__ (*__atomic_compare_exchange_ptr) __atomic_compare_exchange_tmp \ |
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= (DES); \ |
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__atomic_compare_exchange (__atomic_compare_exchange_ptr, (VAL), \ |
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&__atomic_compare_exchange_tmp, 1, \ |
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(SUC), (FAIL)); \ |
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}) |
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|
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#define atomic_compare_exchange_weak(PTR, VAL, DES) \ |
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atomic_compare_exchange_weak_explicit (PTR, VAL, DES, __ATOMIC_SEQ_CST, \ |
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__ATOMIC_SEQ_CST) |
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|
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|
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#define atomic_fetch_add(PTR, VAL) __atomic_fetch_add ((PTR), (VAL), \ |
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__ATOMIC_SEQ_CST) |
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#define atomic_fetch_add_explicit(PTR, VAL, MO) \ |
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__atomic_fetch_add ((PTR), (VAL), (MO)) |
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|
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#define atomic_fetch_sub(PTR, VAL) __atomic_fetch_sub ((PTR), (VAL), \ |
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__ATOMIC_SEQ_CST) |
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#define atomic_fetch_sub_explicit(PTR, VAL, MO) \ |
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__atomic_fetch_sub ((PTR), (VAL), (MO)) |
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|
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#define atomic_fetch_or(PTR, VAL) __atomic_fetch_or ((PTR), (VAL), \ |
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__ATOMIC_SEQ_CST) |
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#define atomic_fetch_or_explicit(PTR, VAL, MO) \ |
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__atomic_fetch_or ((PTR), (VAL), (MO)) |
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|
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#define atomic_fetch_xor(PTR, VAL) __atomic_fetch_xor ((PTR), (VAL), \ |
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__ATOMIC_SEQ_CST) |
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#define atomic_fetch_xor_explicit(PTR, VAL, MO) \ |
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__atomic_fetch_xor ((PTR), (VAL), (MO)) |
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|
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#define atomic_fetch_and(PTR, VAL) __atomic_fetch_and ((PTR), (VAL), \ |
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__ATOMIC_SEQ_CST) |
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#define atomic_fetch_and_explicit(PTR, VAL, MO) \ |
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__atomic_fetch_and ((PTR), (VAL), (MO)) |
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|
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|
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typedef _Atomic struct |
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{ |
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#if __GCC_ATOMIC_TEST_AND_SET_TRUEVAL == 1 |
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_Bool __val; |
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#else |
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unsigned char __val; |
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#endif |
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} atomic_flag; |
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|
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#define ATOMIC_FLAG_INIT { 0 } |
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|
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|
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#define atomic_flag_test_and_set(PTR) \ |
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__atomic_test_and_set ((PTR), __ATOMIC_SEQ_CST) |
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#define atomic_flag_test_and_set_explicit(PTR, MO) \ |
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__atomic_test_and_set ((PTR), (MO)) |
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|
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#define atomic_flag_clear(PTR) __atomic_clear ((PTR), __ATOMIC_SEQ_CST) |
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#define atomic_flag_clear_explicit(PTR, MO) __atomic_clear ((PTR), (MO)) |
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|
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#endif /* _STDATOMIC_H */ |
