61 lines
1.2 KiB
Go
61 lines
1.2 KiB
Go
package perf
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import (
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"fmt"
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"io"
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"net/http"
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"sort"
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"sync"
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"text/tabwriter"
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)
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var (
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mu sync.RWMutex
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events = map[string]*Event{}
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)
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func init() {
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http.HandleFunc("/debug/perf", func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/plain; charset=UTF-8")
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switch r.FormValue("sort") {
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case "desc":
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writeEventsTableCustomSort(w, func(l, r NamedEvent) bool {
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return l.Name < r.Name
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})
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default:
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WriteEventsTable(w)
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}
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})
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}
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type NamedEvent struct {
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Name string
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Event
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}
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func WriteEventsTable(w io.Writer) {
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writeEventsTableCustomSort(w, func(l, r NamedEvent) bool {
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return l.Total > r.Total
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})
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}
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func writeEventsTableCustomSort(w io.Writer, less func(l, r NamedEvent) bool) {
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tw := tabwriter.NewWriter(w, 0, 0, 2, ' ', 0)
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fmt.Fprint(tw, "description\ttotal\tcount\tmin\tmean\tmax\n")
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mu.RLock()
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es := make([]NamedEvent, 0, len(events))
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for d, e := range events {
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e.Mu.RLock()
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es = append(es, NamedEvent{d, *e})
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e.Mu.RUnlock()
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}
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mu.RUnlock()
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sort.Slice(es, func(i, j int) bool {
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return less(es[i], es[j])
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})
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for _, ne := range es {
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fmt.Fprintf(tw, "%s\t%v\t%v\t%v\t%v\t%v\n", ne.Name, ne.Total, ne.Count, ne.Min, ne.MeanTime(), ne.Max)
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}
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tw.Flush()
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}
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