Method CopyFile

tx.go:486–498

CopyFile copies the entire database to file at the given path. A reader transaction is maintained during the copy so it is safe to continue using the database while a copy is in progress.

(path string, mode os.FileMode)

// A reader transaction is maintained during the copy so it is safe to continue
// using the database while a copy is in progress.
func (tx *Tx) CopyFile(path string, mode os.FileMode) error {
	f, err := tx.db.openFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, mode)
	if err != nil {
		return err
	}

	_, err = tx.WriteTo(f)
	if err != nil {
		_ = f.Close()
		return err
	}
	return f.Close()
}

// allocate returns a contiguous block of memory starting at a given page.
func (tx *Tx) allocate(count int) (*common.Page, error) {