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package resources
import (
"os"
"path/filepath"
"strconv"
"strings"
resourcestypes "github.com/moby/buildkit/executor/resources/types"
"github.com/pkg/errors"
)
const (
pidsCurrentFile = "pids.current"
)
func getCgroupPIDsStat(path string) (*resourcestypes.PIDsStat, error) {
pidsStat := &resourcestypes.PIDsStat{}
v, err := parseSingleValueFile(filepath.Join(path, pidsCurrentFile))
if err != nil {
if !errors.Is(err, os.ErrNotExist) {
return nil, err
}
} else {
pidsStat.Current = &v
}
return pidsStat, nil
}
func parseSingleValueFile(filePath string) (uint64, error) {
content, err := os.ReadFile(filePath)
if err != nil {
return 0, errors.Wrapf(err, "failed to read %s", filePath)
}
valueStr := strings.TrimSpace(string(content))
value, err := strconv.ParseUint(valueStr, 10, 64)
if err != nil {
return 0, errors.Wrapf(err, "failed to parse value: %s", valueStr)
}
return value, nil
}
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