// +build linux,!appengine | |
package msgp | |
import ( | |
"os" | |
"syscall" | |
) | |
func adviseRead(mem []byte) { | |
syscall.Madvise(mem, syscall.MADV_SEQUENTIAL|syscall.MADV_WILLNEED) | |
} | |
func adviseWrite(mem []byte) { | |
syscall.Madvise(mem, syscall.MADV_SEQUENTIAL) | |
} | |
func fallocate(f *os.File, sz int64) error { | |
err := syscall.Fallocate(int(f.Fd()), 0, 0, sz) | |
if err == syscall.ENOTSUP { | |
return f.Truncate(sz) | |
} | |
return err | |
} |