Modify - definition. What is Modify
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%ما هو (من)٪ 1 - تعريف

CLASS OF COMPUTER OPERATIONS
RMW; Read modify write; Read-modify-write

modify      
(modifies, modifying, modified)
1.
If you modify something, you change it slightly, usually in order to improve it.
The club members did agree to modify their recruitment policy...
The plane was a modified version of the C-130.
VERB: V n, V-ed
modification (modifications)
Relatively minor modifications were required.
N-VAR
2.
A word or group of words that modifies another word describes or classifies something, or restricts the meaning of the word. (TECHNICAL)
It is a rule of English that adjectives generally precede the noun they modify: we say 'a good cry', not 'a cry good'.
VERB: V n
Modify      
·vt To limit or reduce in extent or degree; to Moderate; to Qualify; to Lower.
II. Modify ·vt To change somewhat the form or qualities of; to alter somewhat; as, to modify a contrivance adapted to some mechanical purpose; to modify the terms of a contract.
modify      
v. a.
1.
Shape, alter, change, vary, give a new form to.
2.
Moderate, qualify, soften, lower.

ويكيبيديا

Read–modify–write

In computer science, read–modify–write is a class of atomic operations (such as test-and-set, fetch-and-add, and compare-and-swap) that both read a memory location and write a new value into it simultaneously, either with a completely new value or some function of the previous value. These operations prevent race conditions in multi-threaded applications. Typically they are used to implement mutexes or semaphores. These atomic operations are also heavily used in non-blocking synchronization.

Maurice Herlihy (1991) ranks atomic operations by their consensus numbers, as follows:

  • : memory-to-memory move and swap, augmented queue, compare-and-swap, fetch-and-cons, sticky byte, load-link/store-conditional (LL/SC)
  • 2n − 2: n-register assignment
  • 2: test-and-set, swap, fetch-and-add, queue, stack
  • 1: atomic read and atomic write

It is impossible to implement an operation that requires a given consensus number with only operations with a lower consensus number, no matter how many of such operations one uses. Read–modify–write instructions often produce unexpected results when used on I/O devices, as a write operation may not affect the same internal register that would be accessed in a read operation.

This term is also associated with RAID levels that perform actual write operations as atomic read–modify–write sequences. Such RAID levels include RAID 4, RAID 5 and RAID 6.

أمثلة من مجموعة نصية لـ٪ 1
1. The parliament could also modify the recommendations.
2. He can decide to accept, modify or reject Steals‘s recommendation.
3. PSD wants to modify the Constitution, Bursa and Adevarul report.
4. The European Commission has asked Spain to modify the law.
5. To modify an oft–repeated assessment of President Franklin D.