diff options
Diffstat (limited to 'include/atomicity.h')
| -rw-r--r-- | include/atomicity.h | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/include/atomicity.h b/include/atomicity.h index edf4ada..4c935c5 100644 --- a/include/atomicity.h +++ b/include/atomicity.h @@ -20,19 +20,26 @@ #ifndef __jack_atomicity_h__ #define __jack_atomicity_h__ -/* - * Interface with various machine-dependent headers derived from the - * gcc/libstdc++.v3 sources. We try to modify the GCC sources as - * little as possible. The following include is resolved using the - * config/configure.hosts mechanism. It will use an OS-dependent - * version if available, otherwise the one for this CPU. Some of - * these files might not work with older GCC compilers. - */ -#include <sysdeps/atomicity.h> +#if __STDC_VERSION__ >= 201112L && !defined(__STDC_NO_ATOMICS__) + +#include <stdatomic.h> + +typedef atomic_int _Atomic_word; + +static inline int exchange_and_add(volatile _Atomic_word* obj, int value) +{ + return atomic_fetch_add_explicit(obj, value, memory_order_relaxed); +} + +#else + +typedef int _Atomic_word; + +static inline int exchange_and_add(volatile _Atomic_word* obj, int value) +{ + return __atomic_fetch_add(obj, value, __ATOMIC_RELAXED); +} -/* These functions are defined for each platform. The C++ library - * function names start with "__" to avoid namespace pollution. */ -#define exchange_and_add __exchange_and_add -#define atomic_add __atomic_add +#endif #endif /* __jack_atomicity_h__ */ |