109 lines
1.8 KiB
Go
109 lines
1.8 KiB
Go
package main
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import (
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"fmt"
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"os"
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"runtime"
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"strconv"
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"time"
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"github.com/shirou/gopsutil/v3/load"
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"github.com/shirou/gopsutil/v3/mem"
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)
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const warnFormat = "#[bg=colour208]"
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var binarySuffixes = []string{"B", "KiB", "MiB", "GiB", "TiB"}
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const binaryFactor = 1024
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func HBin(a uint64, precision int) string {
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f := float64(a)
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var suffix string
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for _, suffix = range binarySuffixes {
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if f < binaryFactor {
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break
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}
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f /= binaryFactor
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}
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return fmt.Sprintf("%.*f%s", precision, f, suffix)
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}
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func usage() {
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fmt.Fprintln(os.Stderr, "Usage:", os.Args[0], "<window_width>")
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os.Exit(2)
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}
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func printLoad(precision int) {
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l, err := load.Avg()
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if err != nil {
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panic(err) // fixme
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}
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if l.Load1 > float64(runtime.NumCPU()) {
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fmt.Print(warnFormat)
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}
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fmt.Printf("[%.[1]*[2]f %.[1]*[3]f %.[1]*[4]f]",
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precision, l.Load1, l.Load5, l.Load15)
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}
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func printMem(absolute, percent bool) {
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if !(absolute || percent) {
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return
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}
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v, err := mem.VirtualMemory()
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if err != nil {
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panic(err) //fixme
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}
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if v.UsedPercent > 90 {
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fmt.Print(warnFormat, "[")
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} else {
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fmt.Print("#[default][")
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}
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if absolute {
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fmt.Printf("%s/%s", HBin(v.Used, 1), HBin(v.Total, 1))
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if percent {
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fmt.Print(" ")
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}
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}
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if percent {
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fmt.Printf("%.0f%%", v.UsedPercent)
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}
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fmt.Print("]")
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}
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func printTime(format string) {
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now := time.Now()
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fmt.Print(now.Format("#[default]" + format))
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}
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func main() {
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if len(os.Args) != 2 {
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usage()
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}
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cols, err := strconv.Atoi(os.Args[1])
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if err != nil {
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fmt.Fprintln(os.Stderr, err)
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usage()
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}
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if cols >= 150 {
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printLoad(2)
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printMem(true, true)
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printTime(" Mon 2006-01-02 15:04")
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} else if cols >= 120 {
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printLoad(2)
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printMem(false, true)
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printTime(" 15:04")
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} else if cols >= 100 {
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printLoad(0)
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printMem(false, true)
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printTime(" 15:04")
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} else if cols >= 80 {
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printTime("15:04")
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}
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}
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