77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
//go:build linux
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package sysinfo
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import (
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"os"
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"strconv"
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"strings"
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"syscall"
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)
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func readPlatform() (Stats, CPUSample) {
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var (
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stats Stats
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sample CPUSample
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)
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if raw, err := os.ReadFile("/proc/stat"); err == nil {
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sample = parseProcStat(string(raw))
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}
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if raw, err := os.ReadFile("/proc/meminfo"); err == nil {
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stats.MemTotalBytes, stats.MemUsedBytes = parseMemInfo(string(raw))
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}
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stats.DiskTotalBytes, stats.DiskUsedBytes = diskUsage("/")
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return stats, sample
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}
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// LoadAvg 返回 1 / 5 / 15 分钟平均负载；读取失败返回 nil
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func LoadAvg() []float64 {
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raw, err := os.ReadFile("/proc/loadavg")
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if err != nil {
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return nil
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}
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fields := strings.Fields(string(raw))
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if len(fields) < 3 {
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return nil
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}
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values := make([]float64, 0, 3)
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for _, field := range fields[:3] {
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value, err := strconv.ParseFloat(field, 64)
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if err != nil {
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return nil
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}
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values = append(values, value)
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}
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return values
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}
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// UptimeSeconds 返回系统运行秒数（/proc/uptime）
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func UptimeSeconds() uint64 {
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raw, err := os.ReadFile("/proc/uptime")
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if err != nil {
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return 0
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}
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fields := strings.Fields(string(raw))
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if len(fields) == 0 {
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return 0
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}
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seconds, err := strconv.ParseFloat(fields[0], 64)
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if err != nil || seconds < 0 {
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return 0
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}
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return uint64(seconds)
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}
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func diskUsage(path string) (total, used uint64) {
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var stat syscall.Statfs_t
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if err := syscall.Statfs(path, &stat); err != nil {
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return 0, 0
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}
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total = stat.Blocks * uint64(stat.Bsize)
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free := stat.Bavail * uint64(stat.Bsize)
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if free > total {
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return total, 0
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}
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return total, total - free
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}
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