package mmap

import "golang.org/x/exp/mmap"

Package mmap provides a way to memory-map a file.

Index ¶

• type ReaderAt
• func Open(filename string) (*ReaderAt, error)
• func (r *ReaderAt) At(i int) byte
• func (r *ReaderAt) Close() error
• func (r *ReaderAt) Len() int
• func (r *ReaderAt) ReadAt(p []byte, off int64) (int, error)

Types ¶

type ReaderAt ¶

type ReaderAt struct {
	// contains filtered or unexported fields
}

ReaderAt reads a memory-mapped file.

Like any io.ReaderAt, clients can execute parallel ReadAt calls, but it is not safe to call Close and reading methods concurrently.

func Open ¶

func Open(filename string) (*ReaderAt, error)

Open memory-maps the named file for reading.

func (*ReaderAt) At ¶

func (r *ReaderAt) At(i int) byte

At returns the byte at index i.

func (*ReaderAt) Close ¶

func (r *ReaderAt) Close() error

Close closes the reader.

func (*ReaderAt) Len ¶

func (r *ReaderAt) Len() int

Len returns the length of the underlying memory-mapped file.

func (*ReaderAt) ReadAt ¶

func (r *ReaderAt) ReadAt(p []byte, off int64) (int, error)

ReadAt implements the io.ReaderAt interface.

Source Files ¶

mmap_unix.go