#ifndef SKYNET_ATOMIC_H #define SKYNET_ATOMIC_H #ifdef __STDC_NO_ATOMICS__ #include #define ATOM_INT volatile int #define ATOM_POINTER volatile uintptr_t #define ATOM_SIZET volatile size_t #define ATOM_ULONG volatile unsigned long #define ATOM_INIT(ptr, v) (*(ptr) = v) #define ATOM_LOAD(ptr) (*(ptr)) #define ATOM_STORE(ptr, v) (*(ptr) = v) #define ATOM_CAS(ptr, oval, nval) __sync_bool_compare_and_swap(ptr, oval, nval) #define ATOM_CAS_POINTER(ptr, oval, nval) __sync_bool_compare_and_swap(ptr, oval, nval) #define ATOM_FINC(ptr) __sync_fetch_and_add(ptr, 1) #define ATOM_FDEC(ptr) __sync_fetch_and_sub(ptr, 1) #define ATOM_FADD(ptr,n) __sync_fetch_and_add(ptr, n) #define ATOM_FSUB(ptr,n) __sync_fetch_and_sub(ptr, n) #define ATOM_FAND(ptr,n) __sync_fetch_and_and(ptr, n) #else #include #define ATOM_INT atomic_int #define ATOM_POINTER atomic_uintptr_t #define ATOM_SIZET atomic_size_t #define ATOM_ULONG atomic_ulong #define ATOM_INIT(ref, v) atomic_init(ref, v) #define ATOM_LOAD(ptr) atomic_load(ptr) #define ATOM_STORE(ptr, v) atomic_store(ptr, v) #define ATOM_CAS(ptr, oval, nval) atomic_compare_exchange_weak(ptr, &(oval), nval) #define ATOM_CAS_POINTER(ptr, oval, nval) atomic_compare_exchange_weak(ptr, &(oval), nval) #define ATOM_FINC(ptr) atomic_fetch_add(ptr, 1) #define ATOM_FDEC(ptr) atomic_fetch_sub(ptr, 1) #define ATOM_FADD(ptr,n) atomic_fetch_add(ptr, n) #define ATOM_FSUB(ptr,n) atomic_fetch_sub(ptr, n) #define ATOM_FAND(ptr,n) atomic_fetch_and(ptr, n) #endif #endif