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| -rw-r--r-- | src/atomic.h | 85 | ||||
| -rw-r--r-- | src/main.c | 1 |
2 files changed, 86 insertions, 0 deletions
diff --git a/src/atomic.h b/src/atomic.h new file mode 100644 index 0000000..f1a6bea --- /dev/null +++ b/src/atomic.h @@ -0,0 +1,85 @@ +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +/** + * Shorthand for standard C atomic operations. + */ + +#ifndef BFS_ATOMIC_H +#define BFS_ATOMIC_H + +#include <stdatomic.h> + +/** + * Prettier spelling of _Atomic. + */ +#define atomic _Atomic + +/** + * Shorthand for atomic_load_explicit(). + * + * @param obj + * A pointer to the atomic object. + * @param order + * The memory ordering to use, without the memory_order_ prefix. + * @return + * The loaded value. + */ +#define load(obj, order) \ + atomic_load_explicit(obj, memory_order_##order) + +/** + * Shorthand for atomic_store_explicit(). + */ +#define store(obj, value, order) \ + atomic_store_explicit(obj, value, memory_order_##order) + +/** + * Shorthand for atomic_exchange_explicit(). + */ +#define exchange(obj, value, order) \ + atomic_exchange_explicit(obj, value, memory_order_##order) + +/** + * Shorthand for atomic_compare_exchange_weak_explicit(). + */ +#define compare_exchange_weak(obj, expected, desired, succ, fail) \ + atomic_compare_exchange_weak_explicit(obj, expected, desired, memory_order_##succ, memory_order_##fail) + +/** + * Shorthand for atomic_compare_exchange_strong_explicit(). + */ +#define compare_exchange_strong(obj, expected, desired, succ, fail) \ + atomic_compare_exchange_strong_explicit(obj, expected, desired, memory_order_##succ, memory_order_##fail) + +/** + * Shorthand for atomic_fetch_add_explicit(). + */ +#define fetch_add(obj, arg, order) \ + atomic_fetch_add_explicit(obj, arg, memory_order_##order) + +/** + * Shorthand for atomic_fetch_sub_explicit(). + */ +#define fetch_sub(obj, arg, order) \ + atomic_fetch_sub_explicit(obj, arg, memory_order_##order) + +/** + * Shorthand for atomic_fetch_or_explicit(). + */ +#define fetch_or(obj, arg, order) \ + atomic_fetch_or_explicit(obj, arg, memory_order_##order) + +/** + * Shorthand for atomic_fetch_xor_explicit(). + */ +#define fetch_xor(obj, arg, order) \ + atomic_fetch_xor_explicit(obj, arg, memory_order_##order) + +/** + * Shorthand for atomic_fetch_and_explicit(). + */ +#define fetch_and(obj, arg, order) \ + atomic_fetch_and_explicit(obj, arg, memory_order_##order) + +#endif // BFS_ATOMIC_H @@ -20,6 +20,7 @@ * - bftw.[ch] (an extended version of nftw(3)) * * - Utilities: + * - atomic.h (atomic operations) * - bar.[ch] (a terminal status bar) * - bit.h (bit manipulation) * - bfstd.[ch] (standard library wrappers/polyfills) |