diff options
Diffstat (limited to 'libgo/go/net/http/pprof/pprof.go')
| -rw-r--r-- | libgo/go/net/http/pprof/pprof.go | 81 |
1 files changed, 63 insertions, 18 deletions
diff --git a/libgo/go/net/http/pprof/pprof.go b/libgo/go/net/http/pprof/pprof.go index 0fe41b7d31b..06fcde1447f 100644 --- a/libgo/go/net/http/pprof/pprof.go +++ b/libgo/go/net/http/pprof/pprof.go @@ -22,9 +22,9 @@ // // go tool pprof http://localhost:6060/debug/pprof/profile // -// Or to look at the thread creation profile: +// Or to view all available profiles: // -// go tool pprof http://localhost:6060/debug/pprof/thread +// go tool pprof http://localhost:6060/debug/pprof/ // // For a study of the facility in action, visit // @@ -36,7 +36,9 @@ import ( "bufio" "bytes" "fmt" + "html/template" "io" + "log" "net/http" "os" "runtime" @@ -47,11 +49,10 @@ import ( ) func init() { + http.Handle("/debug/pprof/", http.HandlerFunc(Index)) http.Handle("/debug/pprof/cmdline", http.HandlerFunc(Cmdline)) http.Handle("/debug/pprof/profile", http.HandlerFunc(Profile)) - http.Handle("/debug/pprof/heap", http.HandlerFunc(Heap)) http.Handle("/debug/pprof/symbol", http.HandlerFunc(Symbol)) - http.Handle("/debug/pprof/thread", http.HandlerFunc(Thread)) } // Cmdline responds with the running program's @@ -62,20 +63,6 @@ func Cmdline(w http.ResponseWriter, r *http.Request) { fmt.Fprintf(w, strings.Join(os.Args, "\x00")) } -// Heap responds with the pprof-formatted heap profile. -// The package initialization registers it as /debug/pprof/heap. -func Heap(w http.ResponseWriter, r *http.Request) { - w.Header().Set("Content-Type", "text/plain; charset=utf-8") - pprof.WriteHeapProfile(w) -} - -// Thread responds with the pprof-formatted thread creation profile. -// The package initialization registers it as /debug/pprof/thread. -func Thread(w http.ResponseWriter, r *http.Request) { - w.Header().Set("Content-Type", "text/plain; charset=utf-8") - pprof.WriteThreadProfile(w) -} - // Profile responds with the pprof-formatted cpu profile. // The package initialization registers it as /debug/pprof/profile. func Profile(w http.ResponseWriter, r *http.Request) { @@ -147,3 +134,61 @@ func Symbol(w http.ResponseWriter, r *http.Request) { w.Write(buf.Bytes()) } + +// Handler returns an HTTP handler that serves the named profile. +func Handler(name string) http.Handler { + return handler(name) +} + +type handler string + +func (name handler) ServeHTTP(w http.ResponseWriter, r *http.Request) { + w.Header().Set("Content-Type", "text/plain; charset=utf-8") + debug, _ := strconv.Atoi(r.FormValue("debug")) + p := pprof.Lookup(string(name)) + if p == nil { + w.WriteHeader(404) + fmt.Fprintf(w, "Unknown profile: %s\n", name) + return + } + p.WriteTo(w, debug) + return +} + +// Index responds with the pprof-formatted profile named by the request. +// For example, "/debug/pprof/heap" serves the "heap" profile. +// Index responds to a request for "/debug/pprof/" with an HTML page +// listing the available profiles. +func Index(w http.ResponseWriter, r *http.Request) { + if strings.HasPrefix(r.URL.Path, "/debug/pprof/") { + name := r.URL.Path[len("/debug/pprof/"):] + if name != "" { + handler(name).ServeHTTP(w, r) + return + } + } + + profiles := pprof.Profiles() + if err := indexTmpl.Execute(w, profiles); err != nil { + log.Print(err) + } +} + +var indexTmpl = template.Must(template.New("index").Parse(`<html> +<head> +<title>/debug/pprof/</title> +</head> +/debug/pprof/<br> +<br> +<body> +profiles:<br> +<table> +{{range .}} +<tr><td align=right>{{.Count}}<td><a href="/debug/pprof/{{.Name}}?debug=1">{{.Name}}</a> +{{end}} +</table> +<br> +<a href="/debug/pprof/goroutine?debug=2">full goroutine stack dump</a><br> +</body> +</html> +`)) |