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package widgets
import (
"strconv"
"time"
ui "github.com/cjbassi/gotop/termui"
psCPU "github.com/shirou/gopsutil/cpu"
)
type CPU struct {
*ui.LineGraph
count int // number of CPUs
interval time.Duration
}
func NewCPU(interval time.Duration) *CPU {
count, _ := psCPU.Counts(false)
c := &CPU{
LineGraph: ui.NewLineGraph(),
count: count,
interval: interval,
}
c.Label = "CPU Usage"
for i := 0; i < c.count; i++ {
key := "CPU" + strconv.Itoa(i+1)
c.Data[key] = []float64{0}
}
go c.update()
ticker := time.NewTicker(c.interval)
go func() {
for range ticker.C {
c.update()
}
}()
return c
}
func (c *CPU) update() {
// psutil calculates the CPU usage over a 1 second interval, therefore it blocks for 1 second
// `true` makes it so psutil doesn't group CPU usage percentages
percent, _ := psCPU.Percent(c.interval, true)
for i := 0; i < c.count; i++ {
key := "CPU" + strconv.Itoa(i+1)
c.Data[key] = append(c.Data[key], percent[i])
}
}
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