Assume we have data items d1, d2,, dn with each di protected by a lock stored in
Question:
Assume we have data items d1, d2,…, dn with each di protected by a lock stored in memory location Mi.
a. Describe the implementation of lock-X(di) and unlock(di) via the use of the test-and-set instruction.
b. Describe the implementation of lock-X(di) and unlock(di) via the use of the compare-and-swap instruction.
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a To lock di execute a testandsetMi If the return value is 0 then the l...View the full answer
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Related Book For
Database System Concepts
ISBN: 9780078022159
7th Edition
Authors: Abraham Silberschatz, Henry F. Korth, S. Sudarshan
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