256 lines
9.5 KiB
C
256 lines
9.5 KiB
C
|
/* 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
|
||
|
|
<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;
|
||
|
|
#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 */
|