cmd/geth, mobile: add memsize to pprof server (ethereum#16532)

* cmd/geth, mobile: add memsize to pprof server

This is a temporary change, to be reverted before the next release.

* cmd/geth: fix variable name

Author: fjl

cmd/gilu/main.go

@@ -223,6 +223,8 @@ func geth(ctx *cli.Context) error {
 // it unlocks any requested accounts, and starts the RPC/IPC interfaces and the
 // miner.
 func startNode(ctx *cli.Context, stack *node.Node) {
+	debug.Memsize.Add("node", stack)
+
 	// Start up the node itself
 	utils.StartNode(stack)
 

internal/debug/flags.go

@@ -28,10 +28,13 @@ import (
 	"github.com/ethereum/go-ethereum/log/term"
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/metrics/exp"
+	"github.com/fjl/memsize/memsizeui"
 	colorable "github.com/mattn/go-colorable"
 	"gopkg.in/urfave/cli.v1"
 )
 
+var Memsize memsizeui.Handler
+
 var (
 	verbosityFlag = cli.IntFlag{
 		Name:  "verbosity",
@@ -129,21 +132,25 @@ func Setup(ctx *cli.Context) error {
 
 	// pprof server
 	if ctx.GlobalBool(pprofFlag.Name) {
-		// Hook go-metrics into expvar on any /debug/metrics request, load all vars
-		// from the registry into expvar, and execute regular expvar handler.
-		exp.Exp(metrics.DefaultRegistry)
-
 		address := fmt.Sprintf("%s:%d", ctx.GlobalString(pprofAddrFlag.Name), ctx.GlobalInt(pprofPortFlag.Name))
-		go func() {
-			log.Info("Starting pprof server", "addr", fmt.Sprintf("http://%s/debug/pprof", address))
-			if err := http.ListenAndServe(address, nil); err != nil {
-				log.Error("Failure in running pprof server", "err", err)
-			}
-		}()
+		StartPProf(address)
 	}
 	return nil
 }
 
+func StartPProf(address string) {
+	// Hook go-metrics into expvar on any /debug/metrics request, load all vars
+	// from the registry into expvar, and execute regular expvar handler.
+	exp.Exp(metrics.DefaultRegistry)
+	http.Handle("/memsize/", http.StripPrefix("/memsize", &Memsize))
+	log.Info("Starting pprof server", "addr", fmt.Sprintf("http://%s/debug/pprof", address))
+	go func() {
+		if err := http.ListenAndServe(address, nil); err != nil {
+			log.Error("Failure in running pprof server", "err", err)
+		}
+	}()
+}
+
 // Exit stops all running profiles, flushing their output to the
 // respective file.
 func Exit() {

mobile/geth.go

@@ -29,6 +29,7 @@ import (
 	"github.com/ethereum/go-ethereum/eth/downloader"
 	"github.com/ethereum/go-ethereum/ethclient"
 	"github.com/ethereum/go-ethereum/ethstats"
+	"github.com/ethereum/go-ethereum/internal/debug"
 	"github.com/ethereum/go-ethereum/les"
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/p2p"
@@ -72,6 +73,9 @@ type NodeConfig struct {
 
 	// WhisperEnabled specifies whether the node should run the Whisper protocol.
 	WhisperEnabled bool
+
+	// Listening address of pprof server.
+	PprofAddress string
 }
 
 // defaultNodeConfig contains the default node configuration values to use if all
@@ -107,6 +111,11 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) {
 	if config.BootstrapNodes == nil || config.BootstrapNodes.Size() == 0 {
 		config.BootstrapNodes = defaultNodeConfig.BootstrapNodes
 	}
+
+	if config.PprofAddress != "" {
+		debug.StartPProf(config.PprofAddress)
+	}
+
 	// Create the empty networking stack
 	nodeConf := &node.Config{
 		Name:        clientIdentifier,
@@ -127,6 +136,8 @@ func NewNode(datadir string, config *NodeConfig) (stack *Node, _ error) {
 		return nil, err
 	}
 
+	debug.Memsize.Add("node", rawStack)
+
 	var genesis *core.Genesis
 	if config.EthereumGenesis != "" {
 		// Parse the user supplied genesis spec if not mainnet