# Recovery From Deadlock

## Process Termination

* Abort all deadlocked processes
* Abort one process at a time until the deadlock cycle is eliminated
* 每丟棄一個process就要執行一次deadlock-detection演算法
* 丟棄process需要考慮很多因素，如優先權

## Resource Preempt

* 藉由搶奪某些process的資源來解決deadlock
* issues
* selecting a victim
* rollback
* 將被搶奪資源的process回復到safe state並從這裡重新執行
* starvation
* a selected victim can be the next victim

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##### last edit
> [name=dot] [time=Tue, Jul 28, 2020 11:04 PM]

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