41 lines
917 B
Go
41 lines
917 B
Go
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package sysinfo
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import (
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"bufio"
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"errors"
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"io"
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"regexp"
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"strconv"
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)
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// BytesToMebibytes converts bytes into mebibytes.
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func BytesToMebibytes(bts uint64) uint64 {
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return bts / ((uint64)(1024 * 1024))
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}
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var (
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meminfoRe = regexp.MustCompile(`^MemTotal:\s+([0-9]+)\s+[kK]B$`)
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errMemTotalNotFound = errors.New("supported MemTotal not found in /proc/meminfo")
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)
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// parseProcMeminfo is used to parse Linux's "/proc/meminfo". It is located
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// here so that the relevant cross agent tests will be run on all platforms.
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func parseProcMeminfo(f io.Reader) (uint64, error) {
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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if m := meminfoRe.FindSubmatch(scanner.Bytes()); m != nil {
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kb, err := strconv.ParseUint(string(m[1]), 10, 64)
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if err != nil {
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return 0, err
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}
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return kb * 1024, nil
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}
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}
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err := scanner.Err()
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if err == nil {
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err = errMemTotalNotFound
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}
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return 0, err
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}
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