42 lines
968 B
Go
42 lines
968 B
Go
package procfs
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import (
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"fmt"
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"io/ioutil"
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)
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// ProcPidStatm contains process information obtained from /proc/[PID]/statm
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// Its fields are documented using PROC(5) man page
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type ProcPidStatm struct {
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Size uint64 // Total program size
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Resident uint64 // Resident set size
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Share uint64 // Shared pages
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Text uint64 // Text (code)
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Lib uint64 // Library (unused in Linux 2.6)
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Data uint64 // Data + Stack
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Dt uint64 // Dirty pages (unused in Linux 2.6)
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}
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func NewProcPidStatm(pid int) (ProcPidStatm, error) {
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p := ProcPidStatm{}
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file := fmt.Sprintf("/proc/%d/statm", pid)
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b, err := ioutil.ReadFile(file)
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if err != nil {
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return p, err
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}
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parsed, err := fmt.Sscanf(string(b), "%d %d %d %d %d %d %d",
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&p.Size, &p.Resident, &p.Share, &p.Text, &p.Lib, &p.Data, &p.Dt)
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if parsed < 7 {
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err := fmt.Errorf("Managed to parse only %d fields out of 7", parsed)
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return p, err
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}
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if err != nil {
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return p, err
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}
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return p, nil
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}
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