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ergo/irc/debug.go

76 lines
2.0 KiB
Go

// Copyright (c) 2012-2014 Jeremy Latt
// released under the MIT license
package irc
import (
"fmt"
"os"
"runtime"
"runtime/debug"
"runtime/pprof"
"time"
"github.com/DanielOaks/girc-go/ircmsg"
)
// DEBUG GCSTATS/NUMGOROUTINE/etc
func debugHandler(server *Server, client *Client, msg ircmsg.IrcMessage) bool {
if !client.flags[Operator] {
return false
}
switch msg.Params[0] {
case "GCSTATS":
stats := debug.GCStats{
Pause: make([]time.Duration, 10),
PauseQuantiles: make([]time.Duration, 5),
}
debug.ReadGCStats(&stats)
client.Notice(fmt.Sprintf("last GC: %s", stats.LastGC.Format(time.RFC1123)))
client.Notice(fmt.Sprintf("num GC: %d", stats.NumGC))
client.Notice(fmt.Sprintf("pause total: %s", stats.PauseTotal))
client.Notice(fmt.Sprintf("pause quantiles min%%: %s", stats.PauseQuantiles[0]))
client.Notice(fmt.Sprintf("pause quantiles 25%%: %s", stats.PauseQuantiles[1]))
client.Notice(fmt.Sprintf("pause quantiles 50%%: %s", stats.PauseQuantiles[2]))
client.Notice(fmt.Sprintf("pause quantiles 75%%: %s", stats.PauseQuantiles[3]))
client.Notice(fmt.Sprintf("pause quantiles max%%: %s", stats.PauseQuantiles[4]))
case "NUMGOROUTINE":
count := runtime.NumGoroutine()
client.Notice(fmt.Sprintf("num goroutines: %d", count))
case "PROFILEHEAP":
profFile := "ergonomadic.mprof"
file, err := os.Create(profFile)
if err != nil {
client.Notice(fmt.Sprintf("error: %s", err))
break
}
defer file.Close()
pprof.Lookup("heap").WriteTo(file, 0)
client.Notice(fmt.Sprintf("written to %s", profFile))
case "STARTCPUPROFILE":
profFile := "ergonomadic.prof"
file, err := os.Create(profFile)
if err != nil {
client.Notice(fmt.Sprintf("error: %s", err))
break
}
if err := pprof.StartCPUProfile(file); err != nil {
defer file.Close()
client.Notice(fmt.Sprintf("error: %s", err))
break
}
client.Notice(fmt.Sprintf("CPU profile writing to %s", profFile))
case "STOPCPUPROFILE":
pprof.StopCPUProfile()
client.Notice(fmt.Sprintf("CPU profiling stopped"))
}
return false
}