MAP_SHARED

MAP_SHARED is a setting used in computer programming when multiple processes (programs) need to access and modify the same area of memory. Instead of each process having its own private copy, MAP_SHARED links them to a common memory region. Changes made by one process are immediately visible to others, which is useful for sharing data efficiently. It’s often used in situations like shared caches or communication between programs, ensuring data consistency across processes while avoiding duplication.