func main0(fn string, oMax int, w func(s string, a ...interface{}), oStat bool, first, last string, dump bool, oBuckets bool) error {
f, err := os.Open(fn) // O_RDONLY
if err != nil {
return err
}
defer f.Close()
bits, err := ioutil.TempFile("", "kvaudit-")
if err != nil {
return err
}
defer func() {
nm := bits.Name()
bits.Close()
os.Remove(nm)
}()
a, err := lldb.NewAllocator(lldb.NewInnerFiler(lldb.NewSimpleFileFiler(f), 16), &lldb.Options{})
if err != nil {
return err
}
cnt := 0
var stats lldb.AllocStats
err = a.Verify(lldb.NewSimpleFileFiler(bits), func(err error) bool {
cnt++
w("%d: %v\n", cnt, err)
return cnt < oMax
}, &stats)
if err != nil {
return err
}
if oStat {
w("Handles %10d // total valid handles in use\n", stats.Handles)
w("Compression %10d // number of compressed blocks\n", stats.Compression)
w("TotalAtoms %10d // total number of atoms == AllocAtoms + FreeAtoms\n", stats.TotalAtoms)
w("AllocBytes %10d // bytes allocated (after decompression, if/where used)\n", stats.AllocBytes)
w("AllocAtoms %10d // atoms allocated/used, including relocation atoms\n", stats.AllocAtoms)
w("Relocations %10d // number of relocated used blocks\n", stats.Relocations)
w("FreeAtoms %10d // atoms unused\n", stats.FreeAtoms)
}
if oBuckets {
var alloc, free [14]int64
sizes := [14]int64{1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 4112}
for atoms, cnt := range stats.AllocMap {
if atoms >= 4096 {
alloc[13] += cnt
continue
}
for i := range sizes {
if sizes[i+1] > atoms {
alloc[i] += cnt
break
}
}
}
for atoms, cnt := range stats.FreeMap {
if atoms > 4096 {
free[13] += cnt
continue
}
for i := range sizes {
if sizes[i+1] > atoms {
free[i] += cnt
break
}
}
}
w("Alloc blocks\n")
for i, v := range alloc {
w("%4d: %10d\n", sizes[i], v)
}
w("Free blocks\n")
for i, v := range free {
w("%4d: %10d\n", sizes[i], v)
}
}
if !(first != "" || last != "" || dump) {
return nil
}
t, err := lldb.OpenBTree(a, nil, 1)
if err != nil {
return err
}
dw := bufio.NewWriter(os.Stdout)
defer dw.Flush()
var e *lldb.BTreeEnumerator
switch {
case first != "":
e, _, err = t.Seek([]byte(first))
default:
e, err = t.SeekFirst()
}
if err != nil {
if err == io.EOF {
err = nil
}
return err
}
blast := []byte(last)
sep := []byte("->")
for {
k, v, err := e.Next()
if err != nil {
if err == io.EOF {
err = nil
}
return err
}
dw.WriteString(fmt.Sprintf("+%d,%d:", len(k), len(v)))
dw.Write(k)
dw.Write(sep)
dw.Write(v)
dw.WriteByte('\n')
if len(blast) != 0 && bytes.Compare(k, blast) >= 0 {
break
}
}
return nil
}
func main0(fn string, oMax int, w func(s string, a ...interface{}), oStat bool, first, last string, dump bool) error {
f, err := os.Open(fn) // O_RDONLY
if err != nil {
return err
}
defer f.Close()
bits, err := ioutil.TempFile("", "kvaudit-")
if err != nil {
return err
}
defer bits.Close()
a, err := lldb.NewAllocator(lldb.NewInnerFiler(lldb.NewSimpleFileFiler(f), 16), &lldb.Options{})
if err != nil {
return err
}
cnt := 0
var stats lldb.AllocStats
err = a.Verify(lldb.NewSimpleFileFiler(bits), func(err error) bool {
cnt++
w("%d: %v\n", cnt, err)
return cnt < oMax
}, &stats)
if oStat {
w("%#v\n", &stats)
}
if err != nil {
return err
}
if !(first != "" || last != "" || dump) {
return nil
}
t, err := lldb.OpenBTree(a, nil, 1)
if err != nil {
return err
}
dw := bufio.NewWriter(os.Stdout)
defer dw.Flush()
var e *lldb.BTreeEnumerator
switch {
case first != "":
e, _, err = t.Seek([]byte(first))
default:
e, err = t.SeekFirst()
}
if err != nil {
if err == io.EOF {
err = nil
}
return err
}
blast := []byte(last)
sep := []byte("->")
for {
k, v, err := e.Next()
if err != nil {
if err == io.EOF {
err = nil
}
return err
}
dw.WriteString(fmt.Sprintf("+%d,%d:", len(k), len(v)))
dw.Write(k)
dw.Write(sep)
dw.Write(v)
dw.WriteByte('\n')
if len(blast) != 0 && bytes.Compare(k, blast) >= 0 {
break
}
}
return nil
}