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buildlib/sparse-include/stdatomic.h
176 строк
8 KB
Batsheva Black
buildlib: Fix typos in sparse stdatomic.h compare-exchange macro
20 июл 2026, 21:41
20 июл 2026, 21:41
a5694c4
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/* COPYRIGHT (c) 2017 Obsidian Research Corporation. * Licensed under BSD (MIT variant) or GPLv2. See COPYING. * * A version of C11 stdatomic.h that doesn't make spare angry. This doesn't * actually work. */ #ifndef _SPARSE_STDATOMIC_H_ #define _SPARSE_STDATOMIC_H_ #include <stddef.h> #include <stdint.h> #define _Atomic(T) struct {volatile __typeof__(T) __val; } #define ATOMIC_VAR_INIT(value) \ { \ .__val = (value) \ } #define atomic_init(obj, value) \ do { \ (obj)->__val = (value); \ } while (0) enum memory_order { memory_order_relaxed, memory_order_consume, memory_order_acquire, memory_order_release, memory_order_acq_rel, memory_order_seq_cst, }; typedef enum memory_order memory_order; #define atomic_thread_fence(order) __asm volatile("" : : : "memory") #define atomic_signal_fence(order) __asm volatile("" : : : "memory") #define atomic_is_lock_free(obj) (sizeof((obj)->__val) <= sizeof(void *)) 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(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; #define atomic_compare_exchange_strong_explicit(object, expected, desired, \ success, failure) \ ({ \ __typeof__((object)->__val) __v = (object)->__val; \ bool __r; \ if (__v == *(expected)) { \ __r = true; \ (object)->__val = (desired); \ } else { \ __r = false; \ *(expected) = __v; \ } \ __r; \ }) #define atomic_compare_exchange_weak_explicit(object, expected, desired, \ success, failure) \ atomic_compare_exchange_strong_explicit(object, expected, desired, \ success, failure) #define atomic_exchange_explicit(object, desired, order) \ ({ \ __typeof__((object)->__val) __v = (object)->__val; \ (object)->__val = (operand); \ __v; \ }) #define atomic_fetch_add_explicit(object, operand, order) \ ({ \ __typeof__((object)->__val) __v = (object)->__val; \ (object)->__val += (operand); \ __v; \ }) #define atomic_fetch_and_explicit(object, operand, order) \ ({ \ __typeof__((object)->__val) __v = (object)->__val; \ (object)->__val &= (operand); \ __v; \ }) #define atomic_fetch_or_explicit(object, operand, order) \ ({ \ __typeof__((object)->__val) __v = (object)->__val; \ (object)->__val |= (operand); \ __v; \ }) #define atomic_fetch_sub_explicit(object, operand, order) \ ({ \ __typeof__((object)->__val) __v = (object)->__val; \ (object)->__val -= (operand); \ __v; \ }) #define atomic_fetch_xor_explicit(object, operand, order) \ ({ \ __typeof__((object)->__val) __v = (object)->__val; \ (object)->__val ^= (operand); \ __v; \ }) #define atomic_load_explicit(object, order) ((object)->__val) #define atomic_store_explicit(object, desired, order) \ ({ (object)->__val = (desired); }) #define atomic_compare_exchange_strong(object, expected, desired) \ atomic_compare_exchange_strong_explicit(object, expected, desired, \ memory_order_seq_cst, \ memory_order_seq_cst) #define atomic_compare_exchange_weak(object, expected, desired) \ atomic_compare_exchange_weak_explicit(object, expected, desired, \ memory_order_seq_cst, \ memory_order_seq_cst) #define atomic_exchange(object, desired) \ atomic_exchange_explicit(object, desired, memory_order_seq_cst) #define atomic_fetch_add(object, operand) \ atomic_fetch_add_explicit(object, operand, memory_order_seq_cst) #define atomic_fetch_and(object, operand) \ atomic_fetch_and_explicit(object, operand, memory_order_seq_cst) #define atomic_fetch_or(object, operand) \ atomic_fetch_or_explicit(object, operand, memory_order_seq_cst) #define atomic_fetch_sub(object, operand) \ atomic_fetch_sub_explicit(object, operand, memory_order_seq_cst) #define atomic_fetch_xor(object, operand) \ atomic_fetch_xor_explicit(object, operand, memory_order_seq_cst) #define atomic_load(object) atomic_load_explicit(object, memory_order_seq_cst) #define atomic_store(object, desired) \ atomic_store_explicit(object, desired, memory_order_seq_cst) typedef atomic_bool atomic_flag; #define ATOMIC_FLAG_INIT ATOMIC_VAR_INIT(0) #define atomic_flag_clear_explicit(object, order) \ atomic_store_explicit(object, 0, order) #define atomic_flag_test_and_set_explicit(object, order) \ atomic_compare_exchange_strong_explicit(object, 0, 1, order, order) #define atomic_flag_clear(object) \ atomic_flag_clear_explicit(object, memory_order_seq_cst) #define atomic_flag_test_and_set(object) \ atomic_flag_test_and_set_explicit(object, memory_order_seq_cst) #endif