From b17709cd9ef3cecfd29d1799b81a300944113155 Mon Sep 17 00:00:00 2001
From: Tom Clegg <tom@tomclegg.ca>
Date: Thu, 30 Jan 2020 16:04:02 -0500
Subject: [PATCH] Add -pprof flag.

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom@tomclegg.ca>
---
 gvcf2numpy.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/gvcf2numpy.go b/gvcf2numpy.go
index 5a02584618..922e96c3f6 100644
--- a/gvcf2numpy.go
+++ b/gvcf2numpy.go
@@ -7,6 +7,8 @@ import (
 	"fmt"
 	"io"
 	"log"
+	"net/http"
+	_ "net/http/pprof"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -37,6 +39,7 @@ func (cmd *gvcf2numpy) RunCommand(prog string, args []string, stdin io.Reader, s
 	flags.SetOutput(stderr)
 	flags.StringVar(&cmd.tagLibraryFile, "tag-library", "", "tag library fasta `file`")
 	flags.StringVar(&cmd.refFile, "ref", "", "reference fasta `file`")
+	pprof := flags.String("pprof", "", "serve Go profile data at http://`[addr]:port`")
 	err = flags.Parse(args)
 	if err == flag.ErrHelp {
 		err = nil
@@ -52,6 +55,12 @@ func (cmd *gvcf2numpy) RunCommand(prog string, args []string, stdin io.Reader, s
 	}
 	cmd.output = stdout
 
+	if *pprof != "" {
+		go func() {
+			log.Println(http.ListenAndServe(*pprof, nil))
+		}()
+	}
+
 	infiles, err := listInputFiles(flags.Args())
 	if err != nil {
 		return 1
-- 
2.30.2