go-mmstruct / mmf

working with memory mapped files in golang.

Installation

Go and get it...

$ go get github.com/HellButcher/go-mmstruct/mmf

Usage

Creating a file:

package main

import (
  "github.com/HellButcher/go-mmstruct/mmf"
)

func main() {
  mf, err := mmf.CreateMappedFile("aNewFile.bin", 4096)
  if err != nil {
    // ...
  }
  defer mf.Close()
  // do something in the mapped memory area
  data := mf.Bytes()
  data[1337] = 42  // writing
  foo := data[666] // reading
}

Opening a file:

package main

import (
  "github.com/HellButcher/go-mmstruct/mmf"
)

func main() {
  mf, err := mmf.OpenMappedFile("anExistingFile.bin")
  if err != nil {
    // ...
  }
  defer mf.Close()
  // do something in the mapped memory area
  data := mf.Bytes()
  data[666] = 42    // writing
  foo := data[1337] // reading
}

The MappedFile object can also be used as a Reader or Writer (and some other interfaces).