fermentord/vendor/github.com/mgutz/logxi/v1/concurrentWriter.go

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package log
import (
"io"
"sync"
)
// ConcurrentWriter is a concurrent safe wrapper around io.Writer
type ConcurrentWriter struct {
writer io.Writer
sync.Mutex
}
// NewConcurrentWriter crates a new concurrent writer wrapper around existing writer.
func NewConcurrentWriter(writer io.Writer) io.Writer {
return &ConcurrentWriter{writer: writer}
}
func (cw *ConcurrentWriter) Write(p []byte) (n int, err error) {
cw.Lock()
defer cw.Unlock()
// This is basically the same logic as in go's log.Output() which
// doesn't look at the returned number of bytes returned
return cw.writer.Write(p)
}