package fileutils // import "github.com/docker/docker/pkg/fileutils" | |
import ( | |
"os" | |
"os/exec" | |
"strconv" | |
"strings" | |
) | |
// GetTotalUsedFds returns the number of used File Descriptors by | |
// executing `lsof -p PID` | |
func GetTotalUsedFds() int { | |
pid := os.Getpid() | |
cmd := exec.Command("lsof", "-p", strconv.Itoa(pid)) | |
output, err := cmd.CombinedOutput() | |
if err != nil { | |
return -1 | |
} | |
outputStr := strings.TrimSpace(string(output)) | |
fds := strings.Split(outputStr, "\n") | |
return len(fds) - 1 | |
} |