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BATCH SYSTEMS : They are a set of programs that perform certain activities which do not require any kind of input from the user. Batch systems contain one or more API which perform various tasks. Ex: When something is typed on a word document by pressing a key, same is displayed on the monitor. The [...] BANKER’S ALGORITHM Consider an example: There are four customers: A, B, C and D, which are analogous to four processes. The credit unit is like the resource The banker himself is the OS Assume each credit unit = Rs. 1000. Not all customers need their maximum credit immediately. Hence only 10 credit units are [...] Deadlock Prevention In order to prevent deadlock, the system is built in such a way that no deadlock occurs. Make sure that at least one of the four conditions in which deadlock can occur does not exist. Attacking Hold and wait : In order to ensure that hold and wait condition never occurs, two protocols [...] A deadlock is a situation wherein two or more competing actions are waiting for the other to finish, and thus neither ever does. In the computing world deadlock refers to a specific condition when two or more processes are each waiting for another to release a resource, or more than two processes are waiting for [...] |
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