Examples
Deadlock situation can be compared to the classic "chicken or egg" problem. It can be also considered a paradoxical "Catch-22" situation. A real world analogical example would be an illogical statute passed by the Kansas legislature in the early 20th century, which stated:
| “ | When two trains approach each other at a crossing, both shall come to a full stop and neither shall start up again until the other has gone. | ” |
A simple computer-based example is as follows. Suppose a computer has three CD drives and three processes. Each of the three processes holds one of the drives. If each process now requests another drive, the three processes will be in a deadlock. Each process will be waiting for the "CD drive released" event, which can be only caused by one of the other waiting processes. Thus, it results in a circular chain.
Read more about this topic: Deadlock
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