Created
December 5, 2018 13:08
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A script to filter and summarise the memory map produced by `!address` command in WinDbg (requires Go 1.11)
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| package main | |
| import ( | |
| "bytes" | |
| "flag" | |
| "io/ioutil" | |
| "log" | |
| "strconv" | |
| "strings" | |
| "github.com/dustin/go-humanize" | |
| ) | |
| type stats struct { | |
| size uint64 | |
| count int | |
| } | |
| func (s *stats) add(size uint64) { | |
| s.count++ | |
| s.size += size | |
| } | |
| func main() { | |
| log.SetFlags(0) | |
| flag.Parse() | |
| fn := flag.Arg(0) | |
| data, err := ioutil.ReadFile(fn) | |
| if err != nil { | |
| log.Fatal(err) | |
| } | |
| var total stats | |
| var byUsage = make(map[string]stats) | |
| for _, line := range bytes.Split(data, []byte("\n")) { | |
| if len(bytes.TrimSpace(line)) == 0 { | |
| continue | |
| } | |
| linestr := string(line) | |
| if len(linestr) < 90 { | |
| continue | |
| } | |
| startstr := strings.TrimSpace(linestr[1:10]) | |
| endstr := strings.TrimSpace(linestr[11:19]) | |
| sizestr := strings.TrimSpace(linestr[20:28]) | |
| if sizestr == "RgnSize" || sizestr == "--------" { | |
| continue | |
| } | |
| typestr := strings.TrimSpace(linestr[29:40]) | |
| if typestr != "MEM_PRIVATE" { | |
| continue | |
| } | |
| statestr := strings.TrimSpace(linestr[41:52]) | |
| if statestr != "MEM_COMMIT" { | |
| continue | |
| } | |
| usagestr := strings.TrimSpace(linestr[88:99]) | |
| size, err := strconv.ParseUint(sizestr, 16, 64) | |
| if err != nil { | |
| log.Fatalf("cannot parse %q: %v", sizestr, err) | |
| } | |
| total.add(size) | |
| s := byUsage[usagestr] | |
| s.add(size) | |
| byUsage[usagestr] = s | |
| log.Printf("%d %s %s", size, startstr, endstr) | |
| } | |
| log.Printf("%-12s %5s %11s %7s", "Usage", "Count", "Size", "Size") | |
| log.Print(strings.Repeat("-", 60)) | |
| for u, s := range byUsage { | |
| log.Printf("%-12s %5d %11d %7s", u, s.count, s.size, humanize.Bytes(s.size)) | |
| } | |
| log.Printf("%-12s %5d %11d %7s", "TOTAL", total.count, total.size, humanize.Bytes(total.size)) | |
| } |
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