aboutsummaryrefslogtreecommitdiff
path: root/vendor/github.com/prometheus/procfs/stat.go
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/prometheus/procfs/stat.go')
-rw-r--r--vendor/github.com/prometheus/procfs/stat.go232
1 files changed, 0 insertions, 232 deletions
diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go
deleted file mode 100644
index 61eb6b0..0000000
--- a/vendor/github.com/prometheus/procfs/stat.go
+++ /dev/null
@@ -1,232 +0,0 @@
-// Copyright 2018 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"
-)
-
-// CPUStat shows how much time the cpu spend in various stages.
-type CPUStat struct {
- User float64
- Nice float64
- System float64
- Idle float64
- Iowait float64
- IRQ float64
- SoftIRQ float64
- Steal float64
- Guest float64
- GuestNice float64
-}
-
-// SoftIRQStat represent the softirq statistics as exported in the procfs stat file.
-// A nice introduction can be found at https://0xax.gitbooks.io/linux-insides/content/interrupts/interrupts-9.html
-// It is possible to get per-cpu stats by reading /proc/softirqs
-type SoftIRQStat struct {
- Hi uint64
- Timer uint64
- NetTx uint64
- NetRx uint64
- Block uint64
- BlockIoPoll uint64
- Tasklet uint64
- Sched uint64
- Hrtimer uint64
- Rcu uint64
-}
-
-// Stat represents kernel/system statistics.
-type Stat struct {
- // Boot time in seconds since the Epoch.
- BootTime uint64
- // Summed up cpu statistics.
- CPUTotal CPUStat
- // Per-CPU statistics.
- CPU []CPUStat
- // Number of times interrupts were handled, which contains numbered and unnumbered IRQs.
- IRQTotal uint64
- // Number of times a numbered IRQ was triggered.
- IRQ []uint64
- // Number of times a context switch happened.
- ContextSwitches uint64
- // Number of times a process was created.
- ProcessCreated uint64
- // Number of processes currently running.
- ProcessesRunning uint64
- // Number of processes currently blocked (waiting for IO).
- ProcessesBlocked uint64
- // Number of times a softirq was scheduled.
- SoftIRQTotal uint64
- // Detailed softirq statistics.
- SoftIRQ SoftIRQStat
-}
-
-// NewStat returns kernel/system statistics read from /proc/stat.
-func NewStat() (Stat, error) {
- fs, err := NewFS(DefaultMountPoint)
- if err != nil {
- return Stat{}, err
- }
-
- return fs.NewStat()
-}
-
-// Parse a cpu statistics line and returns the CPUStat struct plus the cpu id (or -1 for the overall sum).
-func parseCPUStat(line string) (CPUStat, int64, error) {
- cpuStat := CPUStat{}
- var cpu string
-
- count, err := fmt.Sscanf(line, "%s %f %f %f %f %f %f %f %f %f %f",
- &cpu,
- &cpuStat.User, &cpuStat.Nice, &cpuStat.System, &cpuStat.Idle,
- &cpuStat.Iowait, &cpuStat.IRQ, &cpuStat.SoftIRQ, &cpuStat.Steal,
- &cpuStat.Guest, &cpuStat.GuestNice)
-
- if err != nil && err != io.EOF {
- return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): %s", line, err)
- }
- if count == 0 {
- return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): 0 elements parsed", line)
- }
-
- cpuStat.User /= userHZ
- cpuStat.Nice /= userHZ
- cpuStat.System /= userHZ
- cpuStat.Idle /= userHZ
- cpuStat.Iowait /= userHZ
- cpuStat.IRQ /= userHZ
- cpuStat.SoftIRQ /= userHZ
- cpuStat.Steal /= userHZ
- cpuStat.Guest /= userHZ
- cpuStat.GuestNice /= userHZ
-
- if cpu == "cpu" {
- return cpuStat, -1, nil
- }
-
- cpuID, err := strconv.ParseInt(cpu[3:], 10, 64)
- if err != nil {
- return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu/cpuid): %s", line, err)
- }
-
- return cpuStat, cpuID, nil
-}
-
-// Parse a softirq line.
-func parseSoftIRQStat(line string) (SoftIRQStat, uint64, error) {
- softIRQStat := SoftIRQStat{}
- var total uint64
- var prefix string
-
- _, err := fmt.Sscanf(line, "%s %d %d %d %d %d %d %d %d %d %d %d",
- &prefix, &total,
- &softIRQStat.Hi, &softIRQStat.Timer, &softIRQStat.NetTx, &softIRQStat.NetRx,
- &softIRQStat.Block, &softIRQStat.BlockIoPoll,
- &softIRQStat.Tasklet, &softIRQStat.Sched,
- &softIRQStat.Hrtimer, &softIRQStat.Rcu)
-
- if err != nil {
- return SoftIRQStat{}, 0, fmt.Errorf("couldn't parse %s (softirq): %s", line, err)
- }
-
- return softIRQStat, total, nil
-}
-
-// NewStat returns an information about current kernel/system statistics.
-func (fs FS) NewStat() (Stat, error) {
- // See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
-
- f, err := os.Open(fs.Path("stat"))
- if err != nil {
- return Stat{}, err
- }
- defer f.Close()
-
- stat := Stat{}
-
- scanner := bufio.NewScanner(f)
- for scanner.Scan() {
- line := scanner.Text()
- parts := strings.Fields(scanner.Text())
- // require at least <key> <value>
- if len(parts) < 2 {
- continue
- }
- switch {
- case parts[0] == "btime":
- if stat.BootTime, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s (btime): %s", parts[1], err)
- }
- case parts[0] == "intr":
- if stat.IRQTotal, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s (intr): %s", parts[1], err)
- }
- numberedIRQs := parts[2:]
- stat.IRQ = make([]uint64, len(numberedIRQs))
- for i, count := range numberedIRQs {
- if stat.IRQ[i], err = strconv.ParseUint(count, 10, 64); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s (intr%d): %s", count, i, err)
- }
- }
- case parts[0] == "ctxt":
- if stat.ContextSwitches, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s (ctxt): %s", parts[1], err)
- }
- case parts[0] == "processes":
- if stat.ProcessCreated, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s (processes): %s", parts[1], err)
- }
- case parts[0] == "procs_running":
- if stat.ProcessesRunning, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s (procs_running): %s", parts[1], err)
- }
- case parts[0] == "procs_blocked":
- if stat.ProcessesBlocked, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s (procs_blocked): %s", parts[1], err)
- }
- case parts[0] == "softirq":
- softIRQStats, total, err := parseSoftIRQStat(line)
- if err != nil {
- return Stat{}, err
- }
- stat.SoftIRQTotal = total
- stat.SoftIRQ = softIRQStats
- case strings.HasPrefix(parts[0], "cpu"):
- cpuStat, cpuID, err := parseCPUStat(line)
- if err != nil {
- return Stat{}, err
- }
- if cpuID == -1 {
- stat.CPUTotal = cpuStat
- } else {
- for int64(len(stat.CPU)) <= cpuID {
- stat.CPU = append(stat.CPU, CPUStat{})
- }
- stat.CPU[cpuID] = cpuStat
- }
- }
- }
-
- if err := scanner.Err(); err != nil {
- return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
- }
-
- return stat, nil
-}