func main() {
trace.Start(os.Stderr)
http.HandleFunc("/", handler)
go http.ListenAndServe(":5000", nil)
time.Sleep(100 * time.Millisecond)
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
for i := 0; i < 1000; i++ {
go leaker()
}
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
ch, ch1 := make(chan int), make(chan int)
out := make(chan int)
go func() {
for i := 0; i < 20; i++ {
v := <-out
fmt.Println("Recv ", v)
time.Sleep(100 * time.Microsecond)
}
}()
go func() {
for i := 0; i < 10; i++ {
ch <- i
}
}()
go func() {
for i := 0; i < 10; i++ {
ch <- i
}
}()
for i := 0; i < 20; i++ {
select {
case v := <-ch:
out <- v
case v := <-ch1:
out <- v
}
}
trace.Stop()
}
func (t *logicTest) traceStop() {
if t.traceFile != nil {
trace.Stop()
t.traceFile.Close()
t.traceFile = nil
}
}
func main() {
f, err := os.Create("trace")
if err != nil {
panic(err)
}
defer func() {
if err := f.Close(); err != nil {
panic(err)
}
}()
trace.Start(f)
for i := 0; i < 10; i++ {
go bob(i)
}
time.Sleep(time.Duration(20) * time.Second)
fmt.Println("writing trace")
trace.Stop()
time.Sleep(time.Duration(100) * time.Second)
}
func main(f func(*App)) {
flag.Parse()
if app.fprof != "" {
fprof, err := os.Create(app.fprof)
if err != nil {
log.Fatalf("error creating pprof output file [%s]: %v\n",
app.fprof,
err,
)
}
defer fprof.Close()
pprof.StartCPUProfile(fprof)
defer pprof.StopCPUProfile()
}
if app.ftrace != "" {
ftrace, err := os.Create(app.ftrace)
if err != nil {
log.Fatalf("error creating trace output file: %v\n", err)
}
defer ftrace.Close()
trace.Start(ftrace)
defer trace.Stop()
}
fout, err := os.Create(app.fname)
if err != nil {
log.Fatalf("error creating output file [%s]: %v\n",
app.fname,
err,
)
}
defer fout.Close()
go app.write(fout)
app.errc = make(chan error, app.nconc)
app.resc = make(chan Result, app.nconc)
go f(app)
for i := 0; i < app.nevts; i++ {
err := <-app.errc
if err != nil {
log.Fatalf("error: %v\n", err)
}
}
close(app.resc)
close(app.errc)
err = fout.Close()
if err != nil {
log.Fatalf("error closing output file [%s]: %v\n",
app.fname,
err,
)
}
}
func main() {
trace.Start(os.Stderr)
for i := 0; i < 24; i++ {
c := tick(100 * time.Millisecond)
<-c
}
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
var wg sync.WaitGroup
wg.Add(36)
go pool(&wg, 36, 36)
wg.Wait()
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
for i := 0; i < 360/10; i++ {
go leaker()
}
time.Sleep(25 * time.Millisecond)
trace.Stop()
}
func gofmtMain() {
flag.Usage = usage
paths := parseFlags()
if *cpuProfile != "" {
bw, flush := bufferedFileWriter(*cpuProfile)
pprof.StartCPUProfile(bw)
defer flush()
defer pprof.StopCPUProfile()
}
if *traceProfile != "" {
bw, flush := bufferedFileWriter(*traceProfile)
trace.Start(bw)
defer flush()
defer trace.Stop()
}
if *memProfileRate > 0 {
runtime.MemProfileRate = *memProfileRate
bw, flush := bufferedFileWriter(*memProfile)
defer func() {
runtime.GC() // materialize all statistics
if err := pprof.WriteHeapProfile(bw); err != nil {
log.Fatal(err)
}
flush()
}()
}
if *verbose {
log.SetFlags(log.LstdFlags | log.Lmicroseconds)
imports.Debug = true
}
if options.TabWidth < 0 {
fmt.Fprintf(os.Stderr, "negative tabwidth %d\n", options.TabWidth)
exitCode = 2
return
}
if len(paths) == 0 {
if err := processFile("<standard input>", os.Stdin, os.Stdout, true); err != nil {
report(err)
}
return
}
for _, path := range paths {
switch dir, err := os.Stat(path); {
case err != nil:
report(err)
case dir.IsDir():
walkDir(path)
default:
if err := processFile(path, nil, os.Stdout, false); err != nil {
report(err)
}
}
}
}
func doTrace() func() {
if *traceProfile != "" {
bw, flush := bufferedFileWriter(*traceProfile)
trace.Start(bw)
return func() {
flush()
trace.Stop()
}
}
return func() {}
}
func main() {
trace.Start(os.Stderr)
runtime.GOMAXPROCS(24)
in := make(chan int)
out := make(chan int)
go pool(in, out)
go generate(in)
go print(out)
time.Sleep(1 * time.Second)
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
runtime.GOMAXPROCS(1)
in := make(chan int)
out := make(chan int)
go pool(in, out)
go generate(in)
print(out)
trace.Stop()
os.Exit(0)
}
// MakeTrace POST Trace binaries to the deferpanic website
func (c *DeferPanicClient) MakeTrace(commandId int, agent *Agent) {
var buf []byte
buffer := bytes.NewBuffer(buf)
c.Lock()
c.RunningCommands[commandId] = true
c.Unlock()
defer func() {
c.Lock()
delete(c.RunningCommands, commandId)
c.Unlock()
}()
log.Println("trace started")
err := trace.Start(buffer)
if err != nil {
log.Println(err)
return
}
select {
case <-time.After(30 * time.Second):
trace.Stop()
log.Println("trace finished")
out := make([]byte, len(buffer.Bytes()))
copy(out, buffer.Bytes())
pkgpath, err := filepath.Abs(os.Args[0])
if err != nil {
log.Println(err)
return
}
pkg, err := ioutil.ReadFile(pkgpath)
if err != nil {
log.Println(err)
return
}
crc32 := crc32.ChecksumIEEE(pkg)
size := int64(len(pkg))
if agent.CRC32 == crc32 && agent.Size == size {
pkg = []byte{}
}
t := NewTrace(out, pkg, commandId, false)
b, err := json.Marshal(t)
if err != nil {
log.Println(err)
return
}
c.Postit(b, traceUrl, false)
}
}
func main() {
trace.Start(os.Stderr)
var Ball int
table := make(chan int)
go player(table)
go player(table)
table <- Ball
time.Sleep(1 * time.Second)
<-table
trace.Stop()
}
// StopTrace stops an ongoing trace.
func (h *HandlerT) StopGoTrace() error {
h.mu.Lock()
defer h.mu.Unlock()
trace.Stop()
if h.traceW == nil {
return errors.New("trace not in progress")
}
glog.V(logger.Info).Infoln("done writing trace to", h.traceFile)
h.traceW.Close()
h.traceW = nil
h.traceFile = ""
return nil
}
func main() {
trace.Start(os.Stderr)
ch := make(chan int)
out := make(chan int)
go producer(ch, 10*time.Millisecond)
go producer(ch, 25*time.Millisecond)
go reader(out)
for i := 0; i < 20; i++ {
i := <-ch
out <- i
}
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
ch := make(chan int)
go Generate(ch)
for i := 0; i < 10; i++ {
prime := <-ch
fmt.Println(prime)
out := make(chan int)
go Filter(ch, out, prime)
ch = out
}
trace.Stop()
}
func main() {
flag.Parse()
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
log.Fatalln("Error creating file for profile.", err)
}
err = pprof.StartCPUProfile(f)
if err != nil {
log.Fatalln("Error starting CPU profile.", err)
}
// defer adds to list of things to execute when surrounding
// function (not lexical block) returns.
defer pprof.StopCPUProfile()
}
if *traceFilename != "" {
f, err := os.Create(*traceFilename)
if err != nil {
log.Fatalln("Error creating file for trace.", err)
}
err = trace.Start(f)
if err != nil {
log.Fatalln("Error starting trace.", err)
}
defer trace.Stop()
}
digest, err := hex.DecodeString(*digestHexStr)
if err != nil {
log.Fatalln("Error parsing digest.", err)
}
if n := len(digest) * 8; n < 8 || n > 48 || n%8 != 0 {
log.Fatalln("Invalid value for n.")
}
if d := *div; d > 64 {
log.Fatalln("Invalid value for div.")
}
//pre := findPreImage(digest)
pre := findPreImageConcurrent(digest, *div)
if pre != nil {
fmt.Println(hex.EncodeToString(pre))
} else {
log.Println("No preimage found for ", *digestHexStr)
}
}
func main() {
trace.Start(os.Stderr)
fmt.Println("Listening on :5000. Send something using nc: echo hello | nc localhost 5000")
fmt.Println("Exiting in 1 second...")
l, err := net.Listen("tcp", ":5000")
if err != nil {
panic(err)
}
ch := make(chan int)
go logger(ch)
go server(l, ch)
time.Sleep(1 * time.Second)
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
// create new channel of type int
ch := make(chan int)
// start new anonymous goroutine
go func() {
// send 42 to channel
time.Sleep(10 * time.Millisecond)
ch <- 42
}()
// read from channel
<-ch
trace.Stop()
}
// after runs after all testing.
func (m *M) after() {
if *cpuProfile != "" {
m.deps.StopCPUProfile() // flushes profile to disk
}
if *traceFile != "" {
trace.Stop() // flushes trace to disk
}
if *memProfile != "" {
f, err := os.Create(toOutputDir(*memProfile))
if err != nil {
fmt.Fprintf(os.Stderr, "testing: %s\n", err)
os.Exit(2)
}
runtime.GC() // materialize all statistics
if err = m.deps.WriteHeapProfile(f); err != nil {
fmt.Fprintf(os.Stderr, "testing: can't write %s: %s\n", *memProfile, err)
os.Exit(2)
}
f.Close()
}
if *blockProfile != "" && *blockProfileRate >= 0 {
f, err := os.Create(toOutputDir(*blockProfile))
if err != nil {
fmt.Fprintf(os.Stderr, "testing: %s\n", err)
os.Exit(2)
}
if err = m.deps.WriteProfileTo("block", f, 0); err != nil {
fmt.Fprintf(os.Stderr, "testing: can't write %s: %s\n", *blockProfile, err)
os.Exit(2)
}
f.Close()
}
if *mutexProfile != "" && *mutexProfileFraction >= 0 {
f, err := os.Create(toOutputDir(*mutexProfile))
if err != nil {
fmt.Fprintf(os.Stderr, "testing: %s\n", err)
os.Exit(2)
}
if err = m.deps.WriteProfileTo("mutex", f, 0); err != nil {
fmt.Fprintf(os.Stderr, "testing: can't write %s: %s\n", *blockProfile, err)
os.Exit(2)
}
f.Close()
}
if cover.Mode != "" {
coverReport()
}
}
func main() {
trace.Start(os.Stderr)
ch := make(chan int)
go func(ch chan int) {
for i := 0; i < 10; i++ {
time.Sleep(10 * time.Millisecond)
ch <- i
}
close(ch)
}(ch)
for v := range ch {
fmt.Println(v)
}
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
var Ball int
table := make(chan int)
for i := 0; i < 36; i++ {
// this sleep is added to more or less preserve an order
// of the goroutines id on creation
time.Sleep(10 * time.Millisecond)
go player(table)
}
table <- Ball
time.Sleep(1 * time.Second)
<-table
trace.Stop()
}
// This example shows blocked state and some CPU usage visualization
func main() {
trace.Start(os.Stderr)
time.Sleep(10 * time.Millisecond)
ch := make(chan int)
go func() {
time.Sleep(10 * time.Millisecond)
for i := 0; i < 10000000; i++ {
j := math.Sqrt(float64(i * i))
j *= j * float64(i)
_ = j
}
ch <- 42
time.Sleep(10 * time.Millisecond)
}()
<-ch
time.Sleep(100 * time.Millisecond)
trace.Stop()
}
func main() {
trace.Start(os.Stderr)
fmt.Println("Listening on :5000. Send something using nc: echo hello | nc localhost 5000")
fmt.Println("Exiting in 1 second...")
go time.AfterFunc(1*time.Second, func() { trace.Stop(); os.Exit(0) })
l, err := net.Listen("tcp", ":5000")
if err != nil {
panic(err)
}
for {
c, err := l.Accept()
if err != nil {
continue
}
go handler(c)
}
}
func main() {
trace.Start(os.Stderr)
var wg sync.WaitGroup
wg.Add(WORKERS)
tasks := make(chan int)
for i := 0; i < WORKERS; i++ {
time.Sleep(1 * time.Millisecond)
go worker(tasks, &wg)
}
for i := 0; i < TASKS; i++ {
tasks <- i
}
close(tasks)
wg.Wait()
trace.Stop()
}
// Trace responds with the execution trace in binary form.
// Tracing lasts for duration specified in seconds GET parameter, or for 1 second if not specified.
// The package initialization registers it as /debug/pprof/trace.
func Trace(w http.ResponseWriter, r *http.Request) {
sec, _ := strconv.ParseInt(r.FormValue("seconds"), 10, 64)
if sec == 0 {
sec = 1
}
// Set Content Type assuming trace.Start will work,
// because if it does it starts writing.
w.Header().Set("Content-Type", "application/octet-stream")
if err := trace.Start(w); err != nil {
// trace.Start failed, so no writes yet.
// Can change header back to text content and send error code.
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "Could not enable tracing: %s\n", err)
return
}
time.Sleep(time.Duration(sec) * time.Second)
trace.Stop()
}
func (s *server) signalToggleTrace() {
if s.traceFile == nil {
traceFile, err := ioutil.TempFile("", common.ProductName+"_Trace_")
if goshawk.CheckWarn(err) {
return
}
if goshawk.CheckWarn(trace.Start(traceFile)) {
return
}
s.traceFile = traceFile
log.Println("Tracing started in", traceFile.Name())
} else {
trace.Stop()
if !goshawk.CheckWarn(s.traceFile.Close()) {
log.Println("Tracing stopped in", s.traceFile.Name())
}
s.traceFile = nil
}
}
func main() {
cfg := &config{}
cmd := writ.New("devo", cfg)
cmd.Help.Usage = usage
cmd.Help.Header = header
cmd.Help.Footer = footer
_, positional, err := cmd.Decode(os.Args[1:])
if err != nil || cfg.HelpFlag {
cmd.ExitHelp(err)
}
if cfg.VersionFlag {
fmt.Fprintf(os.Stdout, "DeVo version %d.%d.%d\nCompiled with %s\n", devo.Version.Major, devo.Version.Minor, devo.Version.Patch, runtime.Version())
os.Exit(0)
}
if len(positional) != 0 {
cmd.ExitHelp(fmt.Errorf("too many arguments provided"))
}
err = cfg.validate()
if err != nil {
cmd.ExitHelp(err)
}
if cfg.TraceOutput != nil {
defer cfg.TraceOutput.Close()
err = trace.Start(cfg.TraceOutput)
check(err)
defer trace.Stop()
}
if cfg.ProfileOutput != nil {
defer cfg.ProfileOutput.Close()
err = pprof.StartCPUProfile(cfg.ProfileOutput)
check(err)
defer pprof.StopCPUProfile()
}
defer cfg.Output.Close()
check(devo.Decrypt(cfg.Output, cfg.Input, cfg.AccessKey))
}
