/usr/share/gocode/src/github.com/shirou/gopsutil/cpu/cpu.go is in golang-github-shirou-gopsutil-dev 2.17.08-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | package cpu
import (
"encoding/json"
"fmt"
"runtime"
"strconv"
"strings"
"sync"
"time"
"github.com/shirou/gopsutil/internal/common"
)
type TimesStat struct {
CPU string `json:"cpu"`
User float64 `json:"user"`
System float64 `json:"system"`
Idle float64 `json:"idle"`
Nice float64 `json:"nice"`
Iowait float64 `json:"iowait"`
Irq float64 `json:"irq"`
Softirq float64 `json:"softirq"`
Steal float64 `json:"steal"`
Guest float64 `json:"guest"`
GuestNice float64 `json:"guestNice"`
Stolen float64 `json:"stolen"`
}
type InfoStat struct {
CPU int32 `json:"cpu"`
VendorID string `json:"vendorId"`
Family string `json:"family"`
Model string `json:"model"`
Stepping int32 `json:"stepping"`
PhysicalID string `json:"physicalId"`
CoreID string `json:"coreId"`
Cores int32 `json:"cores"`
ModelName string `json:"modelName"`
Mhz float64 `json:"mhz"`
CacheSize int32 `json:"cacheSize"`
Flags []string `json:"flags"`
Microcode string `json:"microcode"`
}
type lastPercent struct {
sync.Mutex
lastCPUTimes []TimesStat
lastPerCPUTimes []TimesStat
}
var lastCPUPercent lastPercent
var invoke common.Invoker
func init() {
invoke = common.Invoke{}
lastCPUPercent.Lock()
lastCPUPercent.lastCPUTimes, _ = Times(false)
lastCPUPercent.lastPerCPUTimes, _ = Times(true)
lastCPUPercent.Unlock()
}
func Counts(logical bool) (int, error) {
return runtime.NumCPU(), nil
}
func (c TimesStat) String() string {
v := []string{
`"cpu":"` + c.CPU + `"`,
`"user":` + strconv.FormatFloat(c.User, 'f', 1, 64),
`"system":` + strconv.FormatFloat(c.System, 'f', 1, 64),
`"idle":` + strconv.FormatFloat(c.Idle, 'f', 1, 64),
`"nice":` + strconv.FormatFloat(c.Nice, 'f', 1, 64),
`"iowait":` + strconv.FormatFloat(c.Iowait, 'f', 1, 64),
`"irq":` + strconv.FormatFloat(c.Irq, 'f', 1, 64),
`"softirq":` + strconv.FormatFloat(c.Softirq, 'f', 1, 64),
`"steal":` + strconv.FormatFloat(c.Steal, 'f', 1, 64),
`"guest":` + strconv.FormatFloat(c.Guest, 'f', 1, 64),
`"guestNice":` + strconv.FormatFloat(c.GuestNice, 'f', 1, 64),
`"stolen":` + strconv.FormatFloat(c.Stolen, 'f', 1, 64),
}
return `{` + strings.Join(v, ",") + `}`
}
// Total returns the total number of seconds in a CPUTimesStat
func (c TimesStat) Total() float64 {
total := c.User + c.System + c.Nice + c.Iowait + c.Irq + c.Softirq + c.Steal +
c.Guest + c.GuestNice + c.Idle + c.Stolen
return total
}
func (c InfoStat) String() string {
s, _ := json.Marshal(c)
return string(s)
}
func getAllBusy(t TimesStat) (float64, float64) {
busy := t.User + t.System + t.Nice + t.Iowait + t.Irq +
t.Softirq + t.Steal + t.Guest + t.GuestNice + t.Stolen
return busy + t.Idle, busy
}
func calculateBusy(t1, t2 TimesStat) float64 {
t1All, t1Busy := getAllBusy(t1)
t2All, t2Busy := getAllBusy(t2)
if t2Busy <= t1Busy {
return 0
}
if t2All <= t1All {
return 1
}
return (t2Busy - t1Busy) / (t2All - t1All) * 100
}
func calculateAllBusy(t1, t2 []TimesStat) ([]float64, error) {
// Make sure the CPU measurements have the same length.
if len(t1) != len(t2) {
return nil, fmt.Errorf(
"received two CPU counts: %d != %d",
len(t1), len(t2),
)
}
ret := make([]float64, len(t1))
for i, t := range t2 {
ret[i] = calculateBusy(t1[i], t)
}
return ret, nil
}
// Percent calculates the percentage of cpu used either per CPU or combined.
// If an interval of 0 is given it will compare the current cpu times against the last call.
// Returns one value per cpu, or a single value if percpu is set to false.
func Percent(interval time.Duration, percpu bool) ([]float64, error) {
if interval <= 0 {
return percentUsedFromLastCall(percpu)
}
// Get CPU usage at the start of the interval.
cpuTimes1, err := Times(percpu)
if err != nil {
return nil, err
}
time.Sleep(interval)
// And at the end of the interval.
cpuTimes2, err := Times(percpu)
if err != nil {
return nil, err
}
return calculateAllBusy(cpuTimes1, cpuTimes2)
}
func percentUsedFromLastCall(percpu bool) ([]float64, error) {
cpuTimes, err := Times(percpu)
if err != nil {
return nil, err
}
lastCPUPercent.Lock()
defer lastCPUPercent.Unlock()
var lastTimes []TimesStat
if percpu {
lastTimes = lastCPUPercent.lastPerCPUTimes
lastCPUPercent.lastPerCPUTimes = cpuTimes
} else {
lastTimes = lastCPUPercent.lastCPUTimes
lastCPUPercent.lastCPUTimes = cpuTimes
}
if lastTimes == nil {
return nil, fmt.Errorf("error getting times for cpu percent. lastTimes was nil")
}
return calculateAllBusy(lastTimes, cpuTimes)
}
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