2018-02-05 16:05:59 -05:00
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package fileutils // import "github.com/docker/docker/pkg/fileutils"
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2016-05-03 11:08:51 -04:00
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import (
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"os"
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"os/exec"
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"strconv"
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"strings"
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)
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// GetTotalUsedFds returns the number of used File Descriptors by
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// executing `lsof -p PID`
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func GetTotalUsedFds() int {
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pid := os.Getpid()
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cmd := exec.Command("lsof", "-p", strconv.Itoa(pid))
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output, err := cmd.CombinedOutput()
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if err != nil {
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return -1
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}
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outputStr := strings.TrimSpace(string(output))
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fds := strings.Split(outputStr, "\n")
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return len(fds) - 1
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}
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