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path: root/vendor/github.com/prometheus/procfs/buddyinfo.go
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Diffstat (limited to 'vendor/github.com/prometheus/procfs/buddyinfo.go')
-rw-r--r--vendor/github.com/prometheus/procfs/buddyinfo.go95
1 files changed, 0 insertions, 95 deletions
diff --git a/vendor/github.com/prometheus/procfs/buddyinfo.go b/vendor/github.com/prometheus/procfs/buddyinfo.go
deleted file mode 100644
index d3a8268..0000000
--- a/vendor/github.com/prometheus/procfs/buddyinfo.go
+++ /dev/null
@@ -1,95 +0,0 @@
-// Copyright 2017 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"
- "fmt"
- "io"
- "os"
- "strconv"
- "strings"
-)
-
-// A BuddyInfo is the details parsed from /proc/buddyinfo.
-// The data is comprised of an array of free fragments of each size.
-// The sizes are 2^n*PAGE_SIZE, where n is the array index.
-type BuddyInfo struct {
- Node string
- Zone string
- Sizes []float64
-}
-
-// NewBuddyInfo reads the buddyinfo statistics.
-func NewBuddyInfo() ([]BuddyInfo, error) {
- fs, err := NewFS(DefaultMountPoint)
- if err != nil {
- return nil, err
- }
-
- return fs.NewBuddyInfo()
-}
-
-// NewBuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
-func (fs FS) NewBuddyInfo() ([]BuddyInfo, error) {
- file, err := os.Open(fs.Path("buddyinfo"))
- if err != nil {
- return nil, err
- }
- defer file.Close()
-
- return parseBuddyInfo(file)
-}
-
-func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) {
- var (
- buddyInfo = []BuddyInfo{}
- scanner = bufio.NewScanner(r)
- bucketCount = -1
- )
-
- for scanner.Scan() {
- var err error
- line := scanner.Text()
- parts := strings.Fields(line)
-
- if len(parts) < 4 {
- return nil, fmt.Errorf("invalid number of fields when parsing buddyinfo")
- }
-
- node := strings.TrimRight(parts[1], ",")
- zone := strings.TrimRight(parts[3], ",")
- arraySize := len(parts[4:])
-
- if bucketCount == -1 {
- bucketCount = arraySize
- } else {
- if bucketCount != arraySize {
- return nil, fmt.Errorf("mismatch in number of buddyinfo buckets, previous count %d, new count %d", bucketCount, arraySize)
- }
- }
-
- sizes := make([]float64, arraySize)
- for i := 0; i < arraySize; i++ {
- sizes[i], err = strconv.ParseFloat(parts[i+4], 64)
- if err != nil {
- return nil, fmt.Errorf("invalid value in buddyinfo: %s", err)
- }
- }
-
- buddyInfo = append(buddyInfo, BuddyInfo{node, zone, sizes})
- }
-
- return buddyInfo, scanner.Err()
-}