minio/internal/ioutil/discard.go at minkms · bdx0/minio

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// This file is part of MinIO Object Storage stack

// This program is free software: you can redistribute it and/or modify

// it under the terms of the GNU Affero General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

// This program is distributed in the hope that it will be useful

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU Affero General Public License for more details.

// You should have received a copy of the GNU Affero General Public License

// along with this program. If not, see <http://www.gnu.org/licenses/>.

package ioutil

import (

"io"

)

// Discard is just like io.Discard without the io.ReaderFrom compatible

// implementation which is buggy on NUMA systems, we have to use a simpler

// io.Writer implementation alone avoids also unnecessary buffer copies,

// and as such incurred latencies.

var Discard io.Writer = discard{}

// discard is /dev/null for Golang.

type discard struct{}

func (discard) Write(p []byte) (int, error) {

return len(p), nil

}

// DiscardReader discarded reader

func DiscardReader(r io.Reader) {

Copy(Discard, r)

}