have an account?【sign in】inter process communication can be done through
hanshawauthorInterprocess communication (IPC) refers to the communication between different processes running on the same computer. This is essential for the coordination and integration of various components in a system. In this article, we will explore the various methods through which interprocess communication can be achieved.
Methods of Interprocess Communication
1. Files and FIFO (First-In, First-Out) Buffers
One of the most common methods of interprocess communication is through files and FIFO buffers. Here, a process writes data to a file, and other processes can read from the file to exchange information. The data is ordered according to the first-in, first-out principle, ensuring that the data is read in the same order as it is written. This method is simple and reliable, but it has limited scope as it is restricted to the communication between processes that share the same filesystem.
2. Message Queues
Message queues are another popular method of interprocess communication. They enable processes to send and receive messages without requiring a file system access. Message queues are particularly suitable for distributed systems where multiple processes need to coordinate their activities. They offer a reliable and secure method of communication, with each message being individually addressed and stored in a queue. This ensures that messages are processed in the correct order and that duplicates are avoided.
3. Semaphore Objects
Semaphores are a controlled access mechanism that limits the number of processes that can access a shared resource simultaneously. They are used for synchronization purposes, ensuring that multiple processes accessing a shared resource do not adversely affect each other's operations. Semaphores can be used for both read-write and read-only access to shared resources. They offer a simple and efficient way to control access to shared resources, making them an essential part of IPC in many systems.
4. Files and FIFO Buffers with Locking Mechanisms
While files and FIFO buffers offer a simple and reliable method of communication, they can be vulnerable to concurrent accesses, leading to data corruption or race conditions. To address these issues, files and FIFO buffers can be combined with locking mechanisms, such as file locks or shared memory locks. This ensures that only one process can access the file or buffer at any given time, ensuring data consistency and avoiding concurrent access issues.
5. Pipes and FIFO Buffers
Pipes are a special type of FIFO buffer used for communication between parent and child processes in the Unix-like operating systems, such as Linux and macOS. They enable parent and child processes to exchange data without the need for file system access. Pipes offer a simple and efficient method of communication, but they are limited to the communication between processes in the same process tree.
Interprocess communication is a critical aspect of any system, enabling processes to coordinate and integrate their activities. Various methods, such as files and FIFO buffers, message queues, semaphores, files and FIFO buffers with locking mechanisms, and pipes, offer different advantages and disadvantages. It is essential to choose the most suitable method for the specific needs of the system, ensuring efficient and reliable communication between processes.