andreyvit · December 5, 2018 13:08 · Dec 5, 2018
diff --git a/filter-windbg-address-map.go b/filter-windbg-address-map.go
@@ -0,0 +1,85 @@
+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))
+}