TYPES OF SOFTWARE SYSTEMS
Filed Under Software, System | Posted on May 25, 2008
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 [...]
Deadlock – Algorithms
Filed Under Algorithms, Deadlock | Posted on May 25, 2008
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 reserved. [...]
Deadlock avoidance and prevention
Filed Under Deadlock, Prevent | Posted on May 25, 2008
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 [...]
Deadlock situation
Filed Under Deadlock | Posted on May 25, 2008
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 [...]
