Function readSmaps

agent/app/service/process.go:310–344

(pid int32, mem *MemoryDetail)

}

func readSmaps(pid int32, mem *MemoryDetail) error {
	filePath := fmt.Sprintf("/proc/%d/smaps", pid)
	file, err := os.Open(filePath)
	if err != nil {
		return err
	}
	defer file.Close()

	scanner := bufio.NewScanner(file)

	for scanner.Scan() {
		line := scanner.Text()
		fields := strings.Fields(line)
		if len(fields) < 2 {
			continue
		}

		key := strings.TrimSuffix(fields[0], ":")
		value, _ := strconv.ParseUint(fields[1], 10, 64)
		value *= 1024

		switch key {
		case "Pss":
			mem.PSS += value
		case "Private_Clean", "Private_Dirty":
			mem.USS += value
		case "Shared_Clean", "Shared_Dirty":
			if mem.Shared == 0 {
				mem.Shared += value
			}
		}
	}

	return scanner.Err()
}