jmert/unixmmap.jl

A Julia package that exposes the Unix mmap interfaces

UnixMmap

Documentation	Build Status	DOI

UnixMmap is an alternative to the Julia standard library's Mmap, with the purpose of exposing the Unix memory-mapping interface.

Installation and usage

Installation and loading is as easy as:

pkg> add UnixMmap

julia> using UnixMmap

A file can be memory mapped (read-only by default) by giving the filename and the Array type (optionally with dimensions to give a shape):

julia> UnixMmap.mmap("arbitrary.dat", Vector{Float64})
192-element Vector{Float64}:
 0.0
 0.0
 ⋮
 0.0
 0.0

julia> UnixMmap.mmap("arbitrary.dat", Matrix{Float64}, (64, 3))
64×3 Matrix{Float64}:
 0.0  0.0  0.0
 0.0  0.0  0.0
 ⋮
 0.0  0.0  0.0
 0.0  0.0  0.0

while an anonymous memory map can be created by instead specifying the Array type and dimensions:

julia> UnixMmap.mmap(Matrix{Float64}, (128, 3))
128×3 Matrix{Float64}:
 0.0  0.0  0.0
 0.0  0.0  0.0
 ⋮
 0.0  0.0  0.0
 0.0  0.0  0.0