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same problem in MVHashMap.Write

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This commit is contained in:
zhiqiangxu 2024-01-06 21:25:09 +08:00
parent dfe484d6a2
commit aa00c8f96c
1 changed files with 9 additions and 20 deletions
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29
core/blockstm/mvhashmap.go
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@ -121,34 +121,23 @@ func (mv *MVHashMap) Write(k Key, v Version, data interface{}) {
return
})
cells.rw.RLock()
ci, ok := cells.tm.Get(v.TxnIndex)
cells.rw.RUnlock()
if ok {
cells.rw.Lock()
if ci, ok := cells.tm.Get(v.TxnIndex); !ok {
cells.tm.Put(v.TxnIndex, &WriteCell{
flag: FlagDone,
incarnation: v.Incarnation,
data: data,
})
} else {
if ci.(*WriteCell).incarnation > v.Incarnation {
panic(fmt.Errorf("existing transaction value does not have lower incarnation: %v, %v",
k, v.TxnIndex))
}
ci.(*WriteCell).flag = FlagDone
ci.(*WriteCell).incarnation = v.Incarnation
ci.(*WriteCell).data = data
} else {
cells.rw.Lock()
if ci, ok = cells.tm.Get(v.TxnIndex); !ok {
cells.tm.Put(v.TxnIndex, &WriteCell{
flag: FlagDone,
incarnation: v.Incarnation,
data: data,
})
} else {
ci.(*WriteCell).flag = FlagDone
ci.(*WriteCell).incarnation = v.Incarnation
ci.(*WriteCell).data = data
}
cells.rw.Unlock()
}
cells.rw.Unlock()
}
func (mv *MVHashMap) ReadStorage(k Key, fallBack func() any) any {