Go: cmd/internal/bio Index | Files

package bio

import "cmd/internal/bio"

Package bio implements common I/O abstractions used within the Go toolchain.

Index

Package Files

buf.go buf_mmap.go must.go

func MustClose Uses

func MustClose(c io.Closer)

MustClose closes Closer c and calls log.Fatal if it returns a non-nil error.

func MustWriter Uses

func MustWriter(w io.Writer) io.Writer

MustWriter returns a Writer that wraps the provided Writer, except that it calls log.Fatal instead of returning a non-nil error.

type Reader Uses

type Reader struct {
    *bufio.Reader
    // contains filtered or unexported fields
}

Reader implements a seekable buffered io.Reader.

func Open Uses

func Open(name string) (*Reader, error)

Open returns a Reader for the file named name.

func (*Reader) Close Uses

func (r *Reader) Close() error

func (*Reader) File Uses

func (r *Reader) File() *os.File

func (*Reader) MustSeek Uses

func (r *Reader) MustSeek(offset int64, whence int) int64

func (*Reader) Offset Uses

func (r *Reader) Offset() int64

func (*Reader) Slice Uses

func (r *Reader) Slice(length uint64) ([]byte, bool, error)

Slice reads the next length bytes of r into a slice.

This slice may be backed by mmap'ed memory. Currently, this memory will never be unmapped. The second result reports whether the backing memory is read-only.

func (*Reader) SliceRO Uses

func (r *Reader) SliceRO(length uint64) []byte

SliceRO returns a slice containing the next length bytes of r backed by a read-only mmap'd data. If the mmap cannot be established (limit exceeded, region too small, etc) a nil slice will be returned. If mmap succeeds, it will never be unmapped.

type Writer Uses

type Writer struct {
    *bufio.Writer
    // contains filtered or unexported fields
}

Writer implements a seekable buffered io.Writer.

func Create Uses

func Create(name string) (*Writer, error)

Create creates the file named name and returns a Writer for that file.

func (*Writer) Close Uses

func (w *Writer) Close() error

func (*Writer) File Uses

func (w *Writer) File() *os.File

func (*Writer) MustSeek Uses

func (w *Writer) MustSeek(offset int64, whence int) int64

func (*Writer) Offset Uses

func (w *Writer) Offset() int64

Package bio imports 7 packages (graph) and is imported by 17 packages. Updated 2019-09-06. Refresh now. Tools for package owners.