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etcdserver: fix race on consistent index

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This commit is contained in:
Anthony Romano
2016-04-07 13:36:46 -07:00
parent 004ff3d4f0
commit 4d2d2cabb9
1 changed files with 10 additions and 2 deletions
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12
etcdserver/consistent_index.go
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@ -14,12 +14,20 @@
package etcdserver
import (
"sync/atomic"
)
// consistentIndex represents the offset of an entry in a consistent replica log.
// It implements the storage.ConsistentIndexGetter interface.
// It is always set to the offset of current entry before executing the entry,
// so ConsistentWatchableKV could get the consistent index from it.
type consistentIndex uint64
func (i *consistentIndex) setConsistentIndex(v uint64) { *i = consistentIndex(v) }
func (i *consistentIndex) setConsistentIndex(v uint64) {
atomic.StoreUint64((*uint64)(i), v)
}
func (i *consistentIndex) ConsistentIndex() uint64 { return uint64(*i) }
func (i *consistentIndex) ConsistentIndex() uint64 {
return atomic.LoadUint64((*uint64)(i))
}