Go Code Snippets
Stdin Lines
go
scanner := bufio.NewScanner(os.Stdin)
for {
scanner.Scan()
text := scanner.Text()
if len(text) == 0 {
break
}
// text ...
}Memory Usage
go
type MemoryInfo struct {
RSS float64
Shared float64
Private float64
}
func GetMomoryInfo() (*MemoryInfo, error) {
buf, err := ioutil.ReadFile("/proc/self/statm")
if err != nil {
return nil, fmt.Errorf("read statm: %w", err)
}
fields := strings.Split(string(buf), " ")
if len(fields) < 3 {
return nil, errors.New("cannot parse statm")
}
rss, err := strconv.ParseInt(fields[1], 10, 64)
if err != nil {
return nil, fmt.Errorf("parse rss: %w", err)
}
shared, err := strconv.ParseInt(fields[2], 10, 64)
if err != nil {
return nil, fmt.Errorf("parse shared: %w", err)
}
pageSizeKB := float64(os.Getpagesize()) / 1024
return &MemoryInfo{
RSS: float64(rss) * pageSizeKB,
Shared: float64(shared) * pageSizeKB,
Private: float64(rss-shared) * pageSizeKB,
}, nil
}