Support configuring pprof HTTP server.

See http://golang.org/pkg/net/http/pprof/ for details.

server.conf.in

@@ -8,6 +8,7 @@ listen = 127.0.0.1:8080
 #basePath = /some/sub/path/ # Set this when running behind a web server under a sub path.
 #maxfd = 32768 # Try to set max open files limit on start (works only when run as root).
 #stats = true # Provide stats API at /api/v1/stats (do not enable this in production or unprotected!).
+#pprofListen = 127.0.0.1:6060 # See http://golang.org/pkg/net/http/pprof/ for details
 
 [app]
 #title = Spreed Speak Freely

src/app/spreed-speakfreely-server/main.go

@@ -31,6 +31,7 @@ import (
 	"html/template"
 	"log"
 	"net/http"
+	_ "net/http/pprof"
 	"os"
 	"path"
 	goruntime "runtime"
@@ -153,6 +154,14 @@ func runner(runtime phoenix.Runtime) error {
 		statsEnabled = false
 	}
 
+	pprofListen, err := runtime.GetString("http", "pprofListen")
+	if err == nil && pprofListen != "" {
+		log.Printf("Starting pprof HTTP server on %s", pprofListen)
+		go func() {
+			log.Println(http.ListenAndServe(pprofListen, nil))
+		}()
+	}
+
 	sessionSecret, err := runtime.GetString("app", "sessionSecret")
 	if err != nil {
 		return fmt.Errorf("No sessionSecret in config file.")