new file mode 100644

@@ -0,0 +1,27 @@

+package 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

+}