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Diffstat (limited to 'vendor/github.com/prometheus/procfs/schedstat.go')
-rw-r--r-- | vendor/github.com/prometheus/procfs/schedstat.go | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/vendor/github.com/prometheus/procfs/schedstat.go b/vendor/github.com/prometheus/procfs/schedstat.go deleted file mode 100644 index a4c4089ac..000000000 --- a/vendor/github.com/prometheus/procfs/schedstat.go +++ /dev/null @@ -1,118 +0,0 @@ -// Copyright 2019 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" - "errors" - "os" - "regexp" - "strconv" -) - -var ( - cpuLineRE = regexp.MustCompile(`cpu(\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+)`) - procLineRE = regexp.MustCompile(`(\d+) (\d+) (\d+)`) -) - -// Schedstat contains scheduler statistics from /proc/schedstat -// -// See -// https://www.kernel.org/doc/Documentation/scheduler/sched-stats.txt -// for a detailed description of what these numbers mean. -// -// Note the current kernel documentation claims some of the time units are in -// jiffies when they are actually in nanoseconds since 2.6.23 with the -// introduction of CFS. A fix to the documentation is pending. See -// https://lore.kernel.org/patchwork/project/lkml/list/?series=403473 -type Schedstat struct { - CPUs []*SchedstatCPU -} - -// SchedstatCPU contains the values from one "cpu<N>" line -type SchedstatCPU struct { - CPUNum string - - RunningNanoseconds uint64 - WaitingNanoseconds uint64 - RunTimeslices uint64 -} - -// ProcSchedstat contains the values from /proc/<pid>/schedstat -type ProcSchedstat struct { - RunningNanoseconds uint64 - WaitingNanoseconds uint64 - RunTimeslices uint64 -} - -// Schedstat reads data from /proc/schedstat -func (fs FS) Schedstat() (*Schedstat, error) { - file, err := os.Open(fs.proc.Path("schedstat")) - if err != nil { - return nil, err - } - defer file.Close() - - stats := &Schedstat{} - scanner := bufio.NewScanner(file) - - for scanner.Scan() { - match := cpuLineRE.FindStringSubmatch(scanner.Text()) - if match != nil { - cpu := &SchedstatCPU{} - cpu.CPUNum = match[1] - - cpu.RunningNanoseconds, err = strconv.ParseUint(match[8], 10, 64) - if err != nil { - continue - } - - cpu.WaitingNanoseconds, err = strconv.ParseUint(match[9], 10, 64) - if err != nil { - continue - } - - cpu.RunTimeslices, err = strconv.ParseUint(match[10], 10, 64) - if err != nil { - continue - } - - stats.CPUs = append(stats.CPUs, cpu) - } - } - - return stats, nil -} - -func parseProcSchedstat(contents string) (stats ProcSchedstat, err error) { - match := procLineRE.FindStringSubmatch(contents) - - if match != nil { - stats.RunningNanoseconds, err = strconv.ParseUint(match[1], 10, 64) - if err != nil { - return - } - - stats.WaitingNanoseconds, err = strconv.ParseUint(match[2], 10, 64) - if err != nil { - return - } - - stats.RunTimeslices, err = strconv.ParseUint(match[3], 10, 64) - return - } - - err = errors.New("could not parse schedstat") - return -} |