1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package debug
import (
"fmt"
"io"
"net/http"
_ "net/http/pprof"
"os"
"runtime"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/metrics/exp"
"github.com/fjl/memsize/memsizeui"
colorable "github.com/mattn/go-colorable"
"github.com/mattn/go-isatty"
"gopkg.in/urfave/cli.v1"
)
var Memsize memsizeui.Handler
var (
verbosityFlag = cli.IntFlag{
Name: "verbosity",
Usage: "Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail",
Value: 3,
}
vmoduleFlag = cli.StringFlag{
Name: "vmodule",
Usage: "Per-module verbosity: comma-separated list of <pattern>=<level> (e.g. eth/*=5,p2p=4)",
Value: "",
}
backtraceAtFlag = cli.StringFlag{
Name: "backtrace",
Usage: "Request a stack trace at a specific logging statement (e.g. \"block.go:271\")",
Value: "",
}
debugFlag = cli.BoolFlag{
Name: "debug",
Usage: "Prepends log messages with call-site location (file and line number)",
}
pprofFlag = cli.BoolFlag{
Name: "pprof",
Usage: "Enable the pprof HTTP server",
}
pprofPortFlag = cli.IntFlag{
Name: "pprof.port",
Usage: "pprof HTTP server listening port",
Value: 6060,
}
pprofAddrFlag = cli.StringFlag{
Name: "pprof.addr",
Usage: "pprof HTTP server listening interface",
Value: "127.0.0.1",
}
memprofilerateFlag = cli.IntFlag{
Name: "pprof.memprofilerate",
Usage: "Turn on memory profiling with the given rate",
Value: runtime.MemProfileRate,
}
blockprofilerateFlag = cli.IntFlag{
Name: "pprof.blockprofilerate",
Usage: "Turn on block profiling with the given rate",
}
cpuprofileFlag = cli.StringFlag{
Name: "pprof.cpuprofile",
Usage: "Write CPU profile to the given file",
}
traceFlag = cli.StringFlag{
Name: "trace",
Usage: "Write execution trace to the given file",
}
// (Deprecated April 2020)
legacyPprofPortFlag = cli.IntFlag{
Name: "pprofport",
Usage: "pprof HTTP server listening port (deprecated, use --pprof.port)",
Value: 6060,
}
legacyPprofAddrFlag = cli.StringFlag{
Name: "pprofaddr",
Usage: "pprof HTTP server listening interface (deprecated, use --pprof.addr)",
Value: "127.0.0.1",
}
legacyMemprofilerateFlag = cli.IntFlag{
Name: "memprofilerate",
Usage: "Turn on memory profiling with the given rate (deprecated, use --pprof.memprofilerate)",
Value: runtime.MemProfileRate,
}
legacyBlockprofilerateFlag = cli.IntFlag{
Name: "blockprofilerate",
Usage: "Turn on block profiling with the given rate (deprecated, use --pprof.blockprofilerate)",
}
legacyCpuprofileFlag = cli.StringFlag{
Name: "cpuprofile",
Usage: "Write CPU profile to the given file (deprecated, use --pprof.cpuprofile)",
}
)
// Flags holds all command-line flags required for debugging.
var Flags = []cli.Flag{
verbosityFlag, vmoduleFlag, backtraceAtFlag, debugFlag,
pprofFlag, pprofAddrFlag, pprofPortFlag, memprofilerateFlag,
blockprofilerateFlag, cpuprofileFlag, traceFlag,
}
var DeprecatedFlags = []cli.Flag{
legacyPprofPortFlag, legacyPprofAddrFlag, legacyMemprofilerateFlag,
legacyBlockprofilerateFlag, legacyCpuprofileFlag,
}
var (
ostream log.Handler
glogger *log.GlogHandler
)
func init() {
usecolor := (isatty.IsTerminal(os.Stderr.Fd()) || isatty.IsCygwinTerminal(os.Stderr.Fd())) && os.Getenv("TERM") != "dumb"
output := io.Writer(os.Stderr)
if usecolor {
output = colorable.NewColorableStderr()
}
ostream = log.StreamHandler(output, log.TerminalFormat(usecolor))
glogger = log.NewGlogHandler(ostream)
}
// Setup initializes profiling and logging based on the CLI flags.
// It should be called as early as possible in the program.
func Setup(ctx *cli.Context) error {
// logging
log.PrintOrigins(ctx.GlobalBool(debugFlag.Name))
glogger.Verbosity(log.Lvl(ctx.GlobalInt(verbosityFlag.Name)))
glogger.Vmodule(ctx.GlobalString(vmoduleFlag.Name))
glogger.BacktraceAt(ctx.GlobalString(backtraceAtFlag.Name))
log.Root().SetHandler(glogger)
// profiling, tracing
if ctx.GlobalIsSet(legacyMemprofilerateFlag.Name) {
runtime.MemProfileRate = ctx.GlobalInt(legacyMemprofilerateFlag.Name)
log.Warn("The flag --memprofilerate is deprecated and will be removed in the future, please use --pprof.memprofilerate")
}
runtime.MemProfileRate = ctx.GlobalInt(memprofilerateFlag.Name)
if ctx.GlobalIsSet(legacyBlockprofilerateFlag.Name) {
Handler.SetBlockProfileRate(ctx.GlobalInt(legacyBlockprofilerateFlag.Name))
log.Warn("The flag --blockprofilerate is deprecated and will be removed in the future, please use --pprof.blockprofilerate")
}
Handler.SetBlockProfileRate(ctx.GlobalInt(blockprofilerateFlag.Name))
if traceFile := ctx.GlobalString(traceFlag.Name); traceFile != "" {
if err := Handler.StartGoTrace(traceFile); err != nil {
return err
}
}
if cpuFile := ctx.GlobalString(cpuprofileFlag.Name); cpuFile != "" {
if err := Handler.StartCPUProfile(cpuFile); err != nil {
return err
}
}
if cpuFile := ctx.GlobalString(legacyCpuprofileFlag.Name); cpuFile != "" {
log.Warn("The flag --cpuprofile is deprecated and will be removed in the future, please use --pprof.cpuprofile")
if err := Handler.StartCPUProfile(cpuFile); err != nil {
return err
}
}
// pprof server
if ctx.GlobalBool(pprofFlag.Name) {
listenHost := ctx.GlobalString(pprofAddrFlag.Name)
if ctx.GlobalIsSet(legacyPprofAddrFlag.Name) && !ctx.GlobalIsSet(pprofAddrFlag.Name) {
listenHost = ctx.GlobalString(legacyPprofAddrFlag.Name)
log.Warn("The flag --pprofaddr is deprecated and will be removed in the future, please use --pprof.addr")
}
port := ctx.GlobalInt(pprofPortFlag.Name)
if ctx.GlobalIsSet(legacyPprofPortFlag.Name) && !ctx.GlobalIsSet(pprofPortFlag.Name) {
port = ctx.GlobalInt(legacyPprofPortFlag.Name)
log.Warn("The flag --pprofport is deprecated and will be removed in the future, please use --pprof.port")
}
address := fmt.Sprintf("%s:%d", listenHost, port)
// This context value ("metrics.addr") represents the utils.MetricsHTTPFlag.Name.
// It cannot be imported because it will cause a cyclical dependency.
StartPProf(address, !ctx.GlobalIsSet("metrics.addr"))
}
return nil
}
func StartPProf(address string, withMetrics bool) {
// Hook go-metrics into expvar on any /debug/metrics request, load all vars
// from the registry into expvar, and execute regular expvar handler.
if withMetrics {
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() {
Handler.StopCPUProfile()
Handler.StopGoTrace()
}
|