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21-Classical+Synchronization+Problems-CS

21-Classical+Synchronization+Problems-CS - and placing the...

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Cigarette Smoking Problem Mehreen Alam
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April 15, 2009 Operating Systems - Mehreen Alam Assume a cigarette requires three ingredients to smoke: Tobacco Paper Match Assume there are also three smokers around a table, each of whom has an infinite supply of one of the three ingredients
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April 15, 2009 Operating Systems - Mehreen Alam Assume there is also a non-smoking arbiter. The arbiter enables the smokers to make their cigarettes by selecting two of the smokers at random, taking one item out of each of their supplies,
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Unformatted text preview: and placing the items on the table. He then notifies the third smoker that he has done this. April 15, 2009 Operating Systems - Mehreen Alam The third smoker removes the two items from the table and uses them (along with his own supply) to make a cigarette, which he smokes for a while. Meanwhile, the arbiter, seeing the table empty, again chooses two smokers at random and places their items on the table. This process continues forever....
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