Memory-Mapped File

A Memory-Mapped File is a segment of virtual memory which has been assigned a direct byte-for-byte correlation with some portion of a data file or data file-like resource.

• See: Virtual Memory, Operating System, File Descriptor, Primary Memory.

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References

2014

• (Wikipedia, 2014) ⇒ http://en.wikipedia.org/wiki/memory-mapped_file Retrieved:2014-8-3.
  • A memory-mapped file is a segment of virtual memory which has been assigned a direct byte-for-byte correlation with some portion of a file or file-like resource. This resource is typically a file that is physically present on-disk, but can also be a device, shared memory object, or other resource that the operating system can reference through a file descriptor. Once present, this correlation between the file and the memory space permits applications to treat the mapped portion as if it were primary memory.

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