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Avoiding unwanted side-effects in the updating of transient data
Avoiding unwanted side-effects in the updating of transient data
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机译:避免瞬态数据更新中的有害副作用
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摘要
An information processing apparatus includes memory for storing a plurality of data; updating means for updating data stored in the memory in a transaction; and setting means for setting, with regard to each of the plurality of data stored in the memory, whether updated data updated by the updating means is to be validated or invalidated at abortion of the transaction, respectively. The setting means performs its setting in advance of the transaction. Saving means saves data, for which updated data has been set to be invalidated at abortion of the transaction by the setting means, except for data for which updated data has been set to be validated at abortion of the transaction by the setting means, before execution of data update by the updating means in the transaction. Control means invalidates the updated data set to be invalidated by restoring the data saved the saving means and validates the updated data set to be validated by maintaining the updated data for which data before execution of updating has not been saved at an end of the transaction if the transaction has been aborted.
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