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atomic.h: Add atomic_fetchadd_64()

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This commit is contained in:
Sebastian Huber 2019-02-11 15:19:30 +01:00
parent d7504f8372
commit 0b177c7c27
1 changed files with 26 additions and 0 deletions
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26
rtemsbsd/include/machine/atomic.h
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@ -1057,6 +1057,32 @@ atomic_store_rel_32(volatile uint32_t *p, uint32_t v)
#endif
}
static inline uint64_t
atomic_fetchadd_64(volatile uint64_t *p, uint64_t v)
{
uint64_t tmp;
#if defined(_RTEMS_BSD_MACHINE_ATOMIC_USE_ATOMIC)
std::atomic_uint_least64_t *q =
reinterpret_cast<std::atomic_uint_least64_t *>(const_cast<uint64_t *>(p));
tmp = q->fetch_add(v, std::memory_order_seq_cst);
#elif defined(_RTEMS_BSD_MACHINE_ATOMIC_USE_STDATOMIC)
atomic_uint_least64_t *q = (atomic_uint_least64_t *)RTEMS_DEVOLATILE(uint64_t *, p);
tmp = atomic_fetch_add_explicit(q, v, memory_order_seq_cst);
#else
rtems_interrupt_level level;
rtems_interrupt_disable(level);
tmp = *p;
*p += v;
rtems_interrupt_enable(level);
#endif
return (tmp);
}
static inline void
atomic_add_long(volatile long *p, long v)
{