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package profile
import (
"flag"
"log"
"os"
"runtime"
"runtime/pprof"
)
var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to `file`")
var memprofile = flag.String("memprofile", "", "write memory profile to `file`")
func CPU() func() {
flag.Parse()
if *cpuprofile == "" {
return nil
}
var file *os.File
if f, err := os.Create(*cpuprofile); err != nil {
log.Fatal("could not create CPU profile: ", err)
} else {
file = f
}
if err := pprof.StartCPUProfile(file); err != nil {
log.Fatal("could not start CPU profile: ", err)
}
return func() {
pprof.StopCPUProfile()
if err := file.Close(); err != nil {
log.Fatal(err)
}
}
}
func Mem() {
flag.Parse()
if *memprofile == "" {
return
}
var file *os.File
if f, err := os.Create(*memprofile); err != nil {
log.Fatal("could not create memory profile: ", err)
} else {
file = f
defer file.Close()
}
runtime.GC()
if err := pprof.Lookup("allocs").WriteTo(file, 0); err != nil {
log.Fatal("could not write memory profile: ", err)
}
}
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