Hii ,
I was asked this question in a recent interview for which i didnt answer as i was relatively new to IPC .
How would you use IPC if the processes are on different systems ?
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Hii ,
I was asked this question in a recent interview for which i didnt answer as i was relatively new to IPC .
How would you use IPC if the processes are on different systems ?
IPC just means Inter Process Communications. There are many ways for processes to communicate, There really is no difference if two processes are local to the same machine or not.
If you are talking across machines, some forms are not available to you such as Shared Memory, Signal, Pipe, Memory mapped File or Semaphore. (There is middleware that can simulate shared memory if you really want to go that route).
Some of the more common methods are:
File Most operating systems.
Signal Most operating systems; some systems, such as Windows, only implement signals in the C run-time library and do not actually provide support for their use as an IPC technique.
Socket Most operating systems.
Message queue Most operating systems.
Pipe All POSIX systems, Windows.
Named pipe All POSIX systems, Windows.
Semaphore All POSIX systems, Windows.
Shared memory All POSIX systems, Windows.
Message passing
(shared nothing) Used in MPI paradigm, Java RMI, CORBA, MSMQ, MailSlots and others.
Memory-mapped file All POSIX systems, Windows. This technique may carry race condition risk if a temporary file is used.
Edit: This list is taken from Wikipedia. The list is as good as any.