翻訳と辞書 Words near each other ・ Data Control Block ・ Data control language ・ Data conversion ・ Data converter ・ Data corruption ・ Data cube ・ Data curation ・ Data custodian ・ Data de Groove ・ Data deduplication ・ Data deficient ・ Data Defined Storage ・ Data definition language ・ Data definition specification ・ Data degradation ・ Data dependency ・ Data descriptor ・ Data Design Interactive ・ Data Design System ・ Data Desk ・ Data dictionary ・ Data differencing ・ Data diffusion machine ・ Data Discman ・ Data discovery ・ Data Discovery and Query Builder ・ Data discrimination ・ Data Display Debugger ・ Data dissemination ・ Data Distribution Service Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Data dependency ： ウィキペディア英語版 Data dependency A data dependency in computer science is a situation in which a program statement (instruction) refers to the data of a preceding statement. In compiler theory, the technique used to discover data dependencies among statements (or instructions) is called dependence analysis. There are three types of dependencies: data, name, and control. == Data dependencies == Assuming statement S1 and S2, S2 depends on S1 if: (∩ O(S2) ) ∪ (∩ I(S2) ) ∪ (∩ O(S2) ) ≠ Ø where: * I(Si) is the set of memory locations read by Si and * O(Sj) is the set of memory locations written by Sj * and there is a feasible run-time execution path from S1 to S2 This Condition is called Bernstein Condition, named by A. J. Bernstein. Three cases exist: * Flow (data) dependence: O(S1) ∩ I (S2), S1 → S2 and S1 writes after something read by S2 * Anti-dependence: I(S1) ∩ O(S2), S1 → S2 and S1 reads something before S2 overwrites it * Output dependence: O(S1) ∩ O(S2), S1 → S2 and both write the same memory location. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Data dependency」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.