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6 Cards in this Set
- Front
- Back
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what is the dining philosopher problem? |
1. philosophers must alternate think and eat 2. can only eat if they have both forks |
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solution to dining philosopher problem |
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a |
a |
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in addition to semaphore what is used in dining philosopher problem? |
States 1. hungry 2. eating 3. thinking |
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what does the dining philosopher problem model? |
it models threads that compete for exclusive access to a common resource |
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explain the reader writer problem |
it deals with accessing a database. 1. a set of threads share a common memory 2. the set of threads is partitioned to readers and writers 3. no problem if 2 readers access the memory at the same time 4. problem if reader and writer both access or if 2 writers access the memory 5. therefore the writer must have exclusive access to memory |
