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Viewing changes to include/sys/atomic.h

  • Committer: Package Import Robot
  • Author(s): Liang Guo
  • Date: 2014-07-31 15:16:53 UTC
  • Revision ID: package-import@ubuntu.com-20140731151653-tgao12alohj26jcs
Tags: upstream-0.6.3+git20140731
Import upstream version 0.6.3+git20140731

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Lines of Context:
include/sys/atomic.h
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        return rc;
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}
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static __inline__ uint32_t
 
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atomic_swap_32(volatile uint32_t *target,  uint32_t newval)
 
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{
 
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        uint32_t rc;
 
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        spin_lock(&atomic32_lock);
 
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        rc = *target;
 
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        *target = newval;
 
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        spin_unlock(&atomic32_lock);
 
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        return rc;
 
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}
 
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static __inline__ void
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atomic_inc_64(volatile uint64_t *target)
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{
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        return rc;
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}
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static __inline__ uint64_t
 
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atomic_swap_64(volatile uint64_t *target,  uint64_t newval)
 
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{
 
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        uint64_t rc;
 
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        spin_lock(&atomic64_lock);
 
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        rc = *target;
 
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        *target = newval;
 
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        spin_unlock(&atomic64_lock);
 
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        return rc;
 
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}
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#else /* ATOMIC_SPINLOCK */
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#define atomic_add_32_nv(v, i)  atomic_add_return((i), (atomic_t *)(v))
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#define atomic_sub_32_nv(v, i)  atomic_sub_return((i), (atomic_t *)(v))
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#define atomic_cas_32(v, x, y)  atomic_cmpxchg((atomic_t *)(v), x, y)
 
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#define atomic_swap_32(v, x)    atomic_xchg((atomic_t *)(v), x)
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#define atomic_inc_64(v)        atomic64_inc((atomic64_t *)(v))
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#define atomic_dec_64(v)        atomic64_dec((atomic64_t *)(v))
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#define atomic_add_64(v, i)     atomic64_add((i), (atomic64_t *)(v))
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#define atomic_add_64_nv(v, i)  atomic64_add_return((i), (atomic64_t *)(v))
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#define atomic_sub_64_nv(v, i)  atomic64_sub_return((i), (atomic64_t *)(v))
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#define atomic_cas_64(v, x, y)  atomic64_cmpxchg((atomic64_t *)(v), x, y)
 
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#define atomic_swap_64(v, x)    atomic64_xchg((atomic64_t *)(v), x)
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#endif /* ATOMIC_SPINLOCK */
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