peraddressspace

peraddressspace is a conceptual or programming construct that refers to a scope or context associated with a specific memory address space. In computing, an address space is the range of memory addresses that a process can access. When something is described as "per address space," it implies that its existence, visibility, or behavior is distinct and isolated within that particular address space.

This concept is fundamental in operating systems and programming languages that support multiple processes or virtual memory. Each process typically operates within its own virtual address space, meaning that the memory addresses used by one process are not directly accessible or visible to another unless explicitly shared. Therefore, variables, data structures, or even code segments can be considered "per address space" if they are unique to a process and cannot be accessed by other processes without special mechanisms like inter-process communication.

In the context of programming, particularly in systems programming or low-level development, understanding the "per address space" nature of memory is crucial for managing resources, preventing data corruption, and ensuring security. For instance, a pointer in one process's address space might point to a memory location that is entirely different from a pointer with the same numerical value in another process's address space. This isolation is a key feature that contributes to the stability and security of modern computing environments.