diff options
Diffstat (limited to 'vendor/github.com/prometheus/procfs/stat.go')
| -rw-r--r-- | vendor/github.com/prometheus/procfs/stat.go | 244 |
1 files changed, 0 insertions, 244 deletions
diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go deleted file mode 100644 index 6d8727541..000000000 --- a/vendor/github.com/prometheus/procfs/stat.go +++ /dev/null @@ -1,244 +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" - "bytes" - "fmt" - "io" - "strconv" - "strings" - - "github.com/prometheus/procfs/internal/fs" - "github.com/prometheus/procfs/internal/util" -) - -// 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 -} - -// 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 %q (cpu): %w", line, err) - } - if count == 0 { - return CPUStat{}, -1, fmt.Errorf("couldn't parse %q (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 %q (cpu/cpuid): %w", 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 %q (softirq): %w", line, err) - } - - return softIRQStat, total, nil -} - -// NewStat returns information about current cpu/process statistics. -// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt -// -// Deprecated: use fs.Stat() instead -func NewStat() (Stat, error) { - fs, err := NewFS(fs.DefaultProcMountPoint) - if err != nil { - return Stat{}, err - } - return fs.Stat() -} - -// NewStat returns information about current cpu/process statistics. -// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt -// -// Deprecated: use fs.Stat() instead -func (fs FS) NewStat() (Stat, error) { - return fs.Stat() -} - -// Stat returns information about current cpu/process statistics. -// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt -func (fs FS) Stat() (Stat, error) { - fileName := fs.proc.Path("stat") - data, err := util.ReadFileNoStat(fileName) - if err != nil { - return Stat{}, err - } - - stat := Stat{} - - scanner := bufio.NewScanner(bytes.NewReader(data)) - 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 %q (btime): %w", 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 %q (intr): %w", 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 %q (intr%d): %w", 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 %q (ctxt): %w", 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 %q (processes): %w", 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 %q (procs_running): %w", 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 %q (procs_blocked): %w", 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 %q: %w", fileName, err) - } - - return stat, nil -} |