Sharing
In multi-programming or in multi-user environment it is common for many users to be executing the same program. If individual copies of these programs were given to each user, much of the primary storage would be wasted. Its solution is to share those pages that can be shared.
Sharing must be carefully controlled to prevent one process from modifying data that another process is accessing. In most systems the shared programs are divided into separate pages i.e. coding and data are kept separate. This is achieved by having page map table entries of different processes point to the same page frame, that page frame is shared among those process.
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Famous quotes containing the word sharing:
“The cup of blessing that we bless, is it not a sharing in the blood of Christ? The bread that we break, is it not a sharing in the body of Christ?”
—Bible: New Testament, 1 Corinthians 10:16.
“The meaning of the Street in all ways and at all times is the need for sharing life with others and the search for community.”
—Virginia Hamilton (b. 1936)
“It is easy to see that what is best written or done by genius in the world, was no man’s work but came by wide social labor, when a thousand wrought like one, sharing the same impulse.”
—Ralph Waldo Emerson (1803–1882)