singleopen

Documentation

Overview

Package singleopen provides functionality for reusing file handles when possible.

Index

• type FS
  • func (fsys *FS) KeepLast(n int)
  • func (fsys *FS) Open(name string) (fs.File, error)

Types

type FS

type FS struct {
	// FS is the underlying file system used to open files.
	// The underlying file system should return files that
	// implement io.ReaderAt. If the file is just a fs.File
	// calls to Read will be synchronised.
	FS fs.FS
	// contains filtered or unexported fields
}

FS is a file system that reuses file handles.

func (*FS) KeepLast

func (fsys *FS) KeepLast(n int)

KeepLast enables a cache that keeps the last n recently closed files open. If n <= 0, the cache is disabled.

func (*FS) Open

func (fsys *FS) Open(name string) (fs.File, error)

Open opens a file or returns the already open file. Only regular files are being reused. Before opening Stat is being called to determine the kind of file.