| Segmentation (memory) |
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Segmentation is one of the most common ways to achieve Memory Protection ; another common one is Paging . Segmentation means that a part or parts of the memory will be sealed off from the currently running Process , through the use of Hardware Register s. If the data that is about to be read or written to is outside the permitted Address Space of that process, a Segmentation Fault will result. This usage should not be confused with that of the Memory Segment s used by early X86 processor architectures. For details of X86 's implementation of segmentation in both 16-bit and 32-bit mode, please see the article on Memory Segment s. Segmentation is a memory-management scheme that supports this user view of memory. A logical address space is actually a collection of segments. Each segment has a name and a length. The address specifies both the segment name and the offset within the segment. The user therefore specifies each address by 2 Parameter s: a segment name and an offset. SEE ALSO |
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