mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
31 lines
543 B
Go
31 lines
543 B
Go
|
package filestream
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
|
||
|
|
"golang.org/x/sys/unix"
|
||
|
|
)
|
||
|
|
|
||
|
|
func (st *streamTracker) adviseDontNeed(n int, fdatasync bool) error {
|
||
|
|
st.length += uint64(n)
|
||
|
|
if st.fd == 0 {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
if st.length < dontNeedBlockSize {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
blockSize := st.length - (st.length % dontNeedBlockSize)
|
||
|
|
if fdatasync {
|
||
|
|
if err := unix.Fsync(int(st.fd)); err != nil {
|
||
|
|
return fmt.Errorf("unix.Fsync error: %w", err)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
st.offset += blockSize
|
||
|
|
st.length -= blockSize
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (st *streamTracker) close() error {
|
||
|
|
return nil
|
||
|
|
}
|