Inter-Process Communication Inter-process communication (IPC) allows multiple processes to communicate and share resources without directly interacting with...
Inter-process communication (IPC) allows multiple processes to communicate and share resources without directly interacting with each other. This enables complex software systems with independent components to collaborate effectively.
There are three primary methods for IPC:
Shared Memory: This method involves the creation of a shared memory segment accessible by multiple processes. Data is written and read directly from this memory, offering fast communication but limited data size.
Sockets: A socket is a virtual communication channel established between two processes, allowing them to exchange data through a single port. This method is efficient and can handle different data types.
Pipes: Pipes are similar to sockets, but they are only used by two processes. One process acts as the "sender", and the other as the "receiver". Both processes can read and write data through a single pipe, offering flexibility and control.
Here's a simple example demonstrating shared memory IPC:
c
#include <stdio.h>
#include <stdlib.h>
int main() {
int shared_memory[10];
int data = 10;
// Write data to shared memory
shared_memory[0] = data;
// Read data from shared memory
int received_data;
shared_memory[0] = 0;
printf("Received data: %d\n", received_data);
return 0;
}
This example shows how to create a shared memory segment and write and read data from it. Each process can access and manipulate the data directly, demonstrating how IPC enables independent processes to communicate.