diff options
Diffstat (limited to 'vendor/github.com/prometheus/procfs/slab.go')
-rw-r--r-- | vendor/github.com/prometheus/procfs/slab.go | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/vendor/github.com/prometheus/procfs/slab.go b/vendor/github.com/prometheus/procfs/slab.go deleted file mode 100644 index 7896fd724..000000000 --- a/vendor/github.com/prometheus/procfs/slab.go +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2020 The Prometheus Authors -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package procfs - -import ( - "bufio" - "bytes" - "fmt" - "regexp" - "strconv" - "strings" - - "github.com/prometheus/procfs/internal/util" -) - -var ( - slabSpace = regexp.MustCompile(`\s+`) - slabVer = regexp.MustCompile(`slabinfo -`) - slabHeader = regexp.MustCompile(`# name`) -) - -// Slab represents a slab pool in the kernel. -type Slab struct { - Name string - ObjActive int64 - ObjNum int64 - ObjSize int64 - ObjPerSlab int64 - PagesPerSlab int64 - // tunables - Limit int64 - Batch int64 - SharedFactor int64 - SlabActive int64 - SlabNum int64 - SharedAvail int64 -} - -// SlabInfo represents info for all slabs. -type SlabInfo struct { - Slabs []*Slab -} - -func shouldParseSlab(line string) bool { - if slabVer.MatchString(line) { - return false - } - if slabHeader.MatchString(line) { - return false - } - return true -} - -// parseV21SlabEntry is used to parse a line from /proc/slabinfo version 2.1. -func parseV21SlabEntry(line string) (*Slab, error) { - // First cleanup whitespace. - l := slabSpace.ReplaceAllString(line, " ") - s := strings.Split(l, " ") - if len(s) != 16 { - return nil, fmt.Errorf("unable to parse: %q", line) - } - var err error - i := &Slab{Name: s[0]} - i.ObjActive, err = strconv.ParseInt(s[1], 10, 64) - if err != nil { - return nil, err - } - i.ObjNum, err = strconv.ParseInt(s[2], 10, 64) - if err != nil { - return nil, err - } - i.ObjSize, err = strconv.ParseInt(s[3], 10, 64) - if err != nil { - return nil, err - } - i.ObjPerSlab, err = strconv.ParseInt(s[4], 10, 64) - if err != nil { - return nil, err - } - i.PagesPerSlab, err = strconv.ParseInt(s[5], 10, 64) - if err != nil { - return nil, err - } - i.Limit, err = strconv.ParseInt(s[8], 10, 64) - if err != nil { - return nil, err - } - i.Batch, err = strconv.ParseInt(s[9], 10, 64) - if err != nil { - return nil, err - } - i.SharedFactor, err = strconv.ParseInt(s[10], 10, 64) - if err != nil { - return nil, err - } - i.SlabActive, err = strconv.ParseInt(s[13], 10, 64) - if err != nil { - return nil, err - } - i.SlabNum, err = strconv.ParseInt(s[14], 10, 64) - if err != nil { - return nil, err - } - i.SharedAvail, err = strconv.ParseInt(s[15], 10, 64) - if err != nil { - return nil, err - } - return i, nil -} - -// parseSlabInfo21 is used to parse a slabinfo 2.1 file. -func parseSlabInfo21(r *bytes.Reader) (SlabInfo, error) { - scanner := bufio.NewScanner(r) - s := SlabInfo{Slabs: []*Slab{}} - for scanner.Scan() { - line := scanner.Text() - if !shouldParseSlab(line) { - continue - } - slab, err := parseV21SlabEntry(line) - if err != nil { - return s, err - } - s.Slabs = append(s.Slabs, slab) - } - return s, nil -} - -// SlabInfo reads data from /proc/slabinfo -func (fs FS) SlabInfo() (SlabInfo, error) { - // TODO: Consider passing options to allow for parsing different - // slabinfo versions. However, slabinfo 2.1 has been stable since - // kernel 2.6.10 and later. - data, err := util.ReadFileNoStat(fs.proc.Path("slabinfo")) - if err != nil { - return SlabInfo{}, err - } - - return parseSlabInfo21(bytes.NewReader(data)) -} |