diff options
| -rw-r--r-- | main.go | 41 |
1 files changed, 32 insertions, 9 deletions
@@ -5,15 +5,17 @@ package deno import ( "flag" "fmt" - "github.com/ry/v8worker2" "os" "runtime/pprof" + + "github.com/ry/v8worker2" ) var flagReload = flag.Bool("reload", false, "Reload cached remote source code.") var flagV8Options = flag.Bool("v8-options", false, "Print V8 command line options.") var flagDebug = flag.Bool("debug", false, "Enable debug output.") -var flagGoProf = flag.String("goprof", "", "Write golang cpu profile to file.") +var flagCPUProf = flag.String("cpuprof", "", "Write golang cpu profile to file.") +var flagMemProf = flag.String("memprof", "", "Write golang memory profile to file.") var flagAllowRead = flag.Bool("allow-read", true, "Allow program to read file system.") @@ -22,6 +24,8 @@ var flagAllowWrite = flag.Bool("allow-write", false, var flagAllowNet = flag.Bool("allow-net", false, "Allow program to make network connection.") +var memProfile *os.File + var Perms struct { FsRead bool FsWrite bool @@ -72,14 +76,9 @@ func Init() { os.Exit(1) } - // Maybe start Golang CPU profiler. + // Maybe start Golang profilers. // Use --prof for profiling JS. - if *flagGoProf != "" { - f, err := os.Create(*flagGoProf) - check(err) - pprof.StartCPUProfile(f) - defer pprof.StopCPUProfile() - } + StartProfiling() createDirs() InitOS() @@ -95,6 +94,29 @@ func Init() { main_map = stringAsset("main.map") } +func StartProfiling() { + if *flagCPUProf != "" { + cpuProfile, err := os.Create(*flagCPUProf) + check(err) + check(pprof.StartCPUProfile(cpuProfile)) + } + if *flagMemProf != "" { + var err error + memProfile, err = os.Create(*flagMemProf) + check(err) + check(pprof.WriteHeapProfile(memProfile)) + } +} + +func stopProfiling() { + if *flagCPUProf != "" { + pprof.StopCPUProfile() + } + if *flagMemProf != "" { + check(memProfile.Close()) + } +} + // It's up to library users to call // deno.Eval("deno_main.js", "denoMain()") func Eval(filename string, code string) { @@ -114,4 +136,5 @@ func Loop() { StartMainMap: main_map, }) DispatchLoop() + stopProfiling() } |