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How you can reap the benefits of io.CopyBuff if os.File not assist copy_file_range? – Getting Assist

By superadmin

October 2, 2022

137

qingyunha
(Qingyunha)

July 4, 2022, 6:05am
#1

github.com

golang/go/blob/2e773a3894fba7af744090d7d42968f4993018e2/src/os/file.go#L155

    
      	return
          }
          
          
// ReadFrom implements io.ReaderFrom.
          func (f *File) ReadFrom(r io.Reader) (n int64, err error) {
          	if err := f.checkValid("write"); err != nil {
          		return 0, err
          	}
          	n, dealt with, e := f.readFrom(r)
          	if !dealt with {
          		return genericReadFrom(f, r) // with out wrapping
          	}
          	return n, f.wrapErr("write", e)
          }
          
          
func genericReadFrom(f *File, r io.Reader) (int64, error) {
          	return io.Copy(onlyWriter{f}, r)
          }
          
          
sort onlyWriter struct {
          	io.Author

It’s going to fallback to io.Copy if copy_file_range isn’t supported.

system
(system)
closed

October 2, 2022, 6:06am
#2

This subject was robotically closed 90 days after the final reply. New replies are not allowed.

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