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24
25#ifndef FFD_ATOMIC_C11_H
26#define FFD_ATOMIC_C11_H
27
28/* atomics */
29/* Using the C11 <stdatomic.h> header or C++11's <atomic>
30 */
31
32#if defined(__cplusplus)
33# include <atomic>
34# define ffd_atomic_pointer(type) std::atomic<type*>
35# define FFD_ATOMIC_RELAXED std::memory_order_relaxed
36# define FFD_ATOMIC_ACQUIRE std::memory_order_acquire
37# define FFD_ATOMIC_RELEASE std::memory_order_release
38// acq_rel & cst not necessary
39typedef std::atomic<int> ffd_atomic_int;
40#else
41# include <stdatomic.h>
42# define ffd_atomic_pointer(type) _Atomic(type*)
43# define FFD_ATOMIC_RELAXED memory_order_relaxed
44# define FFD_ATOMIC_ACQUIRE memory_order_acquire
45# define FFD_ATOMIC_RELEASE memory_order_release
46// acq_rel & cst not necessary
47
48typedef atomic_int ffd_atomic_int;
49#endif
50
51#ifdef __cpp_lib_atomic_value_initialization
52#define FFD_ATOMIC_INIT(val) { val }
53#else
54#define FFD_ATOMIC_INIT(val) ATOMIC_VAR_INIT(val)
55#endif
56
57#define ffd_atomic_load(ptr, order) \
58 atomic_load_explicit(ptr, order)
59#define ffd_atomic_store(ptr, val, order) \
60 atomic_store_explicit(ptr, val, order)
61#define ffd_atomic_exchange(ptr,val,order) \
62 atomic_exchange_explicit(ptr, val, order)
63#define ffd_atomic_compare_exchange(ptr, expected, desired, order1, order2) \
64 atomic_compare_exchange_strong_explicit(ptr, expected, desired, order1, order2)
65#define ffd_atomic_add_fetch(ptr, val, order) \
66 (atomic_fetch_add_explicit(ptr, val, order) + (val))
67
68#endif
69

source code of qtbase/src/3rdparty/forkfd/forkfd_c11.h