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# csMemoryMappedIO Class Reference

Defines a simple memory-mapped IO class that is portable. More...

`#include <csutil/mmapio.h>`

Inheritance diagram for csMemoryMappedIO:

[legend]
List of all members.

## Public Member Functions
| csMemoryMappedIO (char const *filename, iVFS *vfs=0)
| Block size is the size of blocks that you want to get from the file, filename is the name of the file to map.
csRef< csMemoryMapping > | GetData (size_t offset, size_t length)
| Obtain a piece of the mapped file.
bool | IsValid ()
| Returns true the memory was mapped successfully.
virtual | ~csMemoryMappedIO ()
| Destroys the mmapio object, closes open files, and releases memory.
## Friends
struct | PlatformMapping

## Detailed Description

Defines a simple memory-mapped IO class that is portable.

Definition at line 64 of file mmapio.h.

## Constructor & Destructor Documentation

csMemoryMappedIO::csMemoryMappedIO | ( | char const * | filename,
|  | iVFS * | vfs = `0` |
| ) |  |  |

Block size is the size of blocks that you want to get from the file, filename is the name of the file to map.

If you supply a VFS, `filename` is tried to be resolved to a native path. Otherwise, `filename` is used as is, hence it must already be a native path.

virtual csMemoryMappedIO::~csMemoryMappedIO | ( |  | ) | `[virtual]`

Destroys the mmapio object, closes open files, and releases memory.

## Member Function Documentation

csRef<csMemoryMapping> csMemoryMappedIO::GetData | ( | size_t | offset,
|  | size_t | length |
| ) |  |  |

Obtain a piece of the mapped file.

bool csMemoryMappedIO::IsValid | ( |  | ) |

Returns true the memory was mapped successfully.

The documentation for this class was generated from the following file:

- csutil/mmapio.h