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https://github.com/weaveworks/scope.git
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55 lines
696 B
Go
55 lines
696 B
Go
package linux
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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)
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func ReadMaxPID(path string) (uint64, error) {
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b, err := ioutil.ReadFile(path)
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if err != nil {
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return 0, err
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}
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s := strings.TrimSpace(string(b))
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i, err := strconv.ParseUint(s, 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 i, nil
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}
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func ListPID(path string, max uint64) ([]uint64, error) {
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l := make([]uint64, 0, 5)
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for i := uint64(1); i <= max; i++ {
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p := filepath.Join(path, strconv.FormatUint(i, 10))
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s, err := os.Stat(p)
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if err != nil && !os.IsNotExist(err) {
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return nil, err
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}
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if err != nil || !s.IsDir() {
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continue
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}
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l = append(l, i)
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}
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return l, nil
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}
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