What are the different IPC mechanisms in OS?
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These are the methods in IPC:
Pipes (Same Process): This allows a flow of data in one direction only. Analogous to simplex systems (Keyboard). Data from the output is usually buffered until the input process receives it which must have a common origin.
Named Pipes (Different Processes): This is a pipe with a specific name it can be used in processes that don’t have a shared common process origin. E.g. FIFO where the details written to a pipe are first named.
Message Queuing: This allows messages to be passed between processes using either a single queue or several message queues. This is managed by the system kernel these messages are coordinated using an API.
Semaphores: This is used in solving problems associated with synchronization and avoiding race conditions. These are integer values that are greater than or equal to 0.
Shared Memory: This allows the interchange of data through a defined area of memory. Semaphore values have to be obtained before data can get access to shared memory.
Sockets: This method is mostly used to communicate over a network between a client and a server. It allows for a standard connection which is computer and OS independent