/*===---- stdatomic.h - Standard header for atomic types and operations -----=== * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * *===-----------------------------------------------------------------------=== */ #ifndef __clang__ #error unsupported compiler #endif #ifndef __CLANG_STDATOMIC_H #define __CLANG_STDATOMIC_H /* If we're hosted, fall back to the system's stdatomic.h. FreeBSD, for * example, already has a Clang-compatible stdatomic.h header. */ #if __STDC_HOSTED__ && __has_include_next() # include_next #else #include #include #ifdef __cplusplus extern "C" { #endif /* 7.17.1 Introduction */ #define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE #define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE #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_T_LOCK_FREE __GCC_ATOMIC_SHORT_T_LOCK_FREE #define ATOMIC_INT_T_LOCK_FREE __GCC_ATOMIC_INT_T_LOCK_FREE #define ATOMIC_LONG_T_LOCK_FREE __GCC_ATOMIC_LONG_T_LOCK_FREE #define ATOMIC_LLONG_T_LOCK_FREE __GCC_ATOMIC_LLONG_T_LOCK_FREE #define ATOMIC_POINTER_T_LOCK_FREE __GCC_ATOMIC_POINTER_T_LOCK_FREE /* 7.17.2 Initialization */ #define ATOMIC_VAR_INIT(value) (value) #define atomic_init __c11_atomic_init /* 7.17.3 Order and consistency */ typedef enum memory_order { 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; #define kill_dependency(y) (y) /* 7.17.4 Fences */ #ifndef KERNEL /* These should be provided by the libc implementation. */ void atomic_thread_fence(memory_order); void atomic_signal_fence(memory_order); #endif #define atomic_thread_fence(order) __c11_atomic_thread_fence(order) #define atomic_signal_fence(order) __c11_atomic_signal_fence(order) /* 7.17.5 Lock-free property */ #define atomic_is_lock_free(obj) __c11_atomic_is_lock_free(sizeof(*(obj))) /* 7.17.6 Atomic integer types */ #ifdef __cplusplus typedef _Atomic(bool) atomic_bool; #else typedef _Atomic(_Bool) atomic_bool; #endif 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(uint_least16_t) atomic_char16_t; typedef _Atomic(uint_least32_t) atomic_char32_t; typedef _Atomic(wchar_t) atomic_wchar_t; typedef _Atomic(int_least8_t) atomic_int_least8_t; typedef _Atomic(uint_least8_t) atomic_uint_least8_t; typedef _Atomic(int_least16_t) atomic_int_least16_t; typedef _Atomic(uint_least16_t) atomic_uint_least16_t; typedef _Atomic(int_least32_t) atomic_int_least32_t; typedef _Atomic(uint_least32_t) atomic_uint_least32_t; typedef _Atomic(int_least64_t) atomic_int_least64_t; typedef _Atomic(uint_least64_t) atomic_uint_least64_t; typedef _Atomic(int_fast8_t) atomic_int_fast8_t; typedef _Atomic(uint_fast8_t) atomic_uint_fast8_t; typedef _Atomic(int_fast16_t) atomic_int_fast16_t; typedef _Atomic(uint_fast16_t) atomic_uint_fast16_t; typedef _Atomic(int_fast32_t) atomic_int_fast32_t; typedef _Atomic(uint_fast32_t) atomic_uint_fast32_t; typedef _Atomic(int_fast64_t) atomic_int_fast64_t; typedef _Atomic(uint_fast64_t) atomic_uint_fast64_t; typedef _Atomic(intptr_t) atomic_intptr_t; typedef _Atomic(uintptr_t) atomic_uintptr_t; typedef _Atomic(size_t) atomic_size_t; typedef _Atomic(ptrdiff_t) atomic_ptrdiff_t; typedef _Atomic(intmax_t) atomic_intmax_t; typedef _Atomic(uintmax_t) atomic_uintmax_t; /* 7.17.7 Operations on atomic types */ #define atomic_store(object, desired) __c11_atomic_store(object, desired, __ATOMIC_SEQ_CST) #define atomic_store_explicit __c11_atomic_store #define atomic_load(object) __c11_atomic_load(object, __ATOMIC_SEQ_CST) #define atomic_load_explicit __c11_atomic_load #define atomic_exchange(object, desired) __c11_atomic_exchange(object, desired, __ATOMIC_SEQ_CST) #define atomic_exchange_explicit __c11_atomic_exchange #define atomic_compare_exchange_strong(object, expected, desired) __c11_atomic_compare_exchange_strong(object, expected, desired, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) #define atomic_compare_exchange_strong_explicit __c11_atomic_compare_exchange_strong #define atomic_compare_exchange_weak(object, expected, desired) __c11_atomic_compare_exchange_weak(object, expected, desired, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) #define atomic_compare_exchange_weak_explicit __c11_atomic_compare_exchange_weak #define atomic_fetch_add(object, operand) __c11_atomic_fetch_add(object, operand, __ATOMIC_SEQ_CST) #define atomic_fetch_add_explicit __c11_atomic_fetch_add #define atomic_fetch_sub(object, operand) __c11_atomic_fetch_sub(object, operand, __ATOMIC_SEQ_CST) #define atomic_fetch_sub_explicit __c11_atomic_fetch_sub #define atomic_fetch_or(object, operand) __c11_atomic_fetch_or(object, operand, __ATOMIC_SEQ_CST) #define atomic_fetch_or_explicit __c11_atomic_fetch_or #define atomic_fetch_xor(object, operand) __c11_atomic_fetch_xor(object, operand, __ATOMIC_SEQ_CST) #define atomic_fetch_xor_explicit __c11_atomic_fetch_xor #define atomic_fetch_and(object, operand) __c11_atomic_fetch_and(object, operand, __ATOMIC_SEQ_CST) #define atomic_fetch_and_explicit __c11_atomic_fetch_and /* 7.17.8 Atomic flag type and operations */ typedef struct atomic_flag { atomic_bool _Value; } atomic_flag; #define ATOMIC_FLAG_INIT { 0 } #ifndef KERNEL /* These should be provided by the libc implementation. */ #ifdef __cplusplus bool atomic_flag_test_and_set(volatile atomic_flag *); bool atomic_flag_test_and_set_explicit(volatile atomic_flag *, memory_order); #else _Bool atomic_flag_test_and_set(volatile atomic_flag *); _Bool atomic_flag_test_and_set_explicit(volatile atomic_flag *, memory_order); #endif void atomic_flag_clear(volatile atomic_flag *); void atomic_flag_clear_explicit(volatile atomic_flag *, memory_order); #endif #define atomic_flag_test_and_set(object) __c11_atomic_exchange(&(object)->_Value, 1, __ATOMIC_SEQ_CST) #define atomic_flag_test_and_set_explicit(object, order) __c11_atomic_exchange(&(object)->_Value, 1, order) #define atomic_flag_clear(object) __c11_atomic_store(&(object)->_Value, 0, __ATOMIC_SEQ_CST) #define atomic_flag_clear_explicit(object, order) __c11_atomic_store(&(object)->_Value, 0, order) #ifdef __cplusplus } #endif #endif /* __STDC_HOSTED__ */ #endif /* __CLANG_STDATOMIC_H */