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Code Issues Packages 1 Wiki Activity

Add go profiling CLI flag

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This commit is contained in:
Ryan Dahl 2018-05-22 11:42:56 -04:00
parent 51692a5825
commit 6a1d7d2fe6
1 changed files with 14 additions and 0 deletions
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14
main.go
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@ -5,14 +5,17 @@ import (
"fmt" "fmt"
"github.com/golang/protobuf/proto" "github.com/golang/protobuf/proto"
"github.com/ry/v8worker2" "github.com/ry/v8worker2"
"log"
"net/url" "net/url"
"os" "os"
"path" "path"
"runtime/pprof"
) )
var flagReload = flag.Bool("reload", false, "Reload cached remote source code.") var flagReload = flag.Bool("reload", false, "Reload cached remote source code.")
var flagV8Options = flag.Bool("v8-options", false, "Print V8 command line options.") var flagV8Options = flag.Bool("v8-options", false, "Print V8 command line options.")
var flagDebug = flag.Bool("debug", false, "Enable debug output.") var flagDebug = flag.Bool("debug", false, "Enable debug output.")
var flagGoProf = flag.String("goprof", "", "Write golang cpu profile to file.")
var DenoDir string var DenoDir string
var CompileDir string var CompileDir string
@ -53,6 +56,17 @@ func main() {
} }
args = v8worker2.SetFlags(args) args = v8worker2.SetFlags(args)
// Maybe start Golang CPU profiler.
// Use --prof for profiling JS.
if *flagGoProf != "" {
f, err := os.Create(*flagGoProf)
if err != nil {
log.Fatal(err)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
createDirs() createDirs()
createWorker() createWorker()