2023-03-01 11:35:36 -06:00
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package gui
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import (
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"fmt"
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"bytes"
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// "os"
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"runtime"
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"runtime/debug"
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"runtime/pprof"
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)
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2023-03-12 08:47:16 -05:00
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func (n *Node) DebugGolangWindow(makeWindow bool) {
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2023-03-01 11:35:36 -06:00
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var w, g, og, outputTextbox *Node
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// Either:
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// make a new window
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// make a new tab in the existing window
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if (makeWindow) {
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2023-04-08 15:34:36 -05:00
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w = Config.rootNode.NewWindow("GO")
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2023-03-01 11:35:36 -06:00
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w.Custom = w.StandardClose
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} else {
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2023-03-03 14:41:38 -06:00
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w = n.NewTab("GOLANG")
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2023-03-01 11:35:36 -06:00
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}
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g = w.NewGroup("Language Internals")
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g.NewButton("ReadModuleInfo()", func () {
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tmp, _ := debug.ReadBuildInfo()
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outputTextbox.SetText(tmp.String())
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})
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2023-03-12 08:47:16 -05:00
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g.NewButton("runtime.NumGoroutine()", func () {
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2023-03-01 11:35:36 -06:00
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buf := new(bytes.Buffer)
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pprof.Lookup("goroutine").WriteTo(buf, 1)
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outputTextbox.SetText(buf.String())
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2023-03-12 08:47:16 -05:00
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outputTextbox.AppendText(fmt.Sprintln("runtime.NumGoroutine() = ", runtime.NumGoroutine()))
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2023-03-01 11:35:36 -06:00
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})
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g.NewButton("pprof.Lookup(heap)", func () {
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buf := new(bytes.Buffer)
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pprof.Lookup("heap").WriteTo(buf, 1)
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outputTextbox.SetText(buf.String())
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})
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2023-03-12 08:47:16 -05:00
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g.NewButton("debug.PrintStack(current)", func () {
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outputTextbox.SetText(string(debug.Stack()))
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})
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g.NewButton("pprof.Lookup(goroutine)", func () {
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buf := new(bytes.Buffer)
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pprof.Lookup("goroutine").WriteTo(buf, 1)
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outputTextbox.SetText(buf.String())
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})
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2023-03-01 11:35:36 -06:00
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g.NewButton("pprof.Lookup(block)", func () {
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buf := new(bytes.Buffer)
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pprof.Lookup("block").WriteTo(buf, 1)
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outputTextbox.SetText(buf.String())
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})
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g.NewButton("pprof.Lookup threadcreate", func () {
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buf := new(bytes.Buffer)
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pprof.Lookup("threadcreate").WriteTo(buf, 1)
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outputTextbox.SetText(buf.String())
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})
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g.NewButton("runtime.ReadMemStats()", func () {
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outputTextbox.SetText(runtimeReadMemStats())
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})
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g.NewButton("debug.FreeOSMemory()", func () {
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var out string = "Before debug.FreeOSMemory():\n\n"
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out += runtimeReadMemStats()
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debug.FreeOSMemory()
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out += "\n\nAfter debug.FreeOSMemory():\n\n"
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out += runtimeReadMemStats()
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outputTextbox.SetText(out)
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})
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g.NewButton("debug.ReadGCStats()", func () {
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var tmp debug.GCStats
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var out string
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debug.ReadGCStats(&tmp)
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log(tmp)
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out += fmt.Sprintln("LastGC:", tmp.LastGC, "// time.Time time of last collection")
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out += fmt.Sprintln("NumGC:", tmp.NumGC, "// number of garbage collections")
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out += fmt.Sprintln("PauseTotal:", tmp.PauseTotal, "// total pause for all collections")
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out += fmt.Sprintln("Pause:", tmp.Pause, "// []time.Duration pause history, most recent first")
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out += fmt.Sprintln("PauseEnd:", tmp.Pause, "// []time.Time pause history, most recent first")
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out += fmt.Sprintln("PauseQuantiles:", tmp.PauseQuantiles, "// []time.Duration")
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outputTextbox.SetText(out)
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})
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g.NewButton("debug.SetTraceback('all')", func () {
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debug.SetTraceback("all")
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})
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g.NewButton("panic()", func () {
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panic("test")
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})
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2023-03-12 08:47:16 -05:00
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g = w.NewGroup("TODO: finish these")
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// g.NewLabel("TODO:")
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2023-03-01 11:35:36 -06:00
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2023-03-03 14:41:38 -06:00
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g.NewButton("runtime.Stack(true)", func () {
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// TODO: https://stackoverflow.com/questions/61127053/how-to-list-all-the-running-goroutines-in-a-go-program
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// func Stack(buf []byte, all bool) int
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})
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2023-03-01 11:35:36 -06:00
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g.NewButton("debug.SetMemoryLimit(int)", func () {
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// TODO:
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//debug.SetMemoryLimit(1024 * 1024 * 100)
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})
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g.NewButton("debug.SetMaxStack(int bytes)", func () {
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// default is apparently 1GB
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})
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g.NewButton("debug.SetMaxThreads(int)", func () {
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// default is apparently 10,000
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})
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g.NewButton("debug.SetTraceback('all')", func () {
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debug.SetTraceback("all")
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})
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// deprecated (probably) by String() implementation within golang
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g.NewButton("dumpModuleInfo() (deprecate)", func () {
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outputTextbox.SetText(dumpModuleInfo())
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})
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og = w.NewGroup("output")
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outputTextbox = og.NewTextbox("outputBox")
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outputTextbox.Custom = func () {
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log("custom TextBox() for golang output a =", outputTextbox.widget.S, outputTextbox.id)
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}
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}
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func runtimeReadMemStats() string {
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var s runtime.MemStats
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var out string
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runtime.ReadMemStats(&s)
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out += fmt.Sprintln("alloc:", s.Alloc, "bytes")
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out += fmt.Sprintln("total-alloc:", s.TotalAlloc, "bytes")
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out += fmt.Sprintln("sys:", s.Sys, "bytes")
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out += fmt.Sprintln("lookups:", s.Lookups)
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out += fmt.Sprintln("mallocs:", s.Mallocs)
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out += fmt.Sprintln("frees:", s.Frees)
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out += fmt.Sprintln("heap-alloc:", s.HeapAlloc, "bytes")
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out += fmt.Sprintln("heap-sys:", s.HeapSys, "bytes")
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out += fmt.Sprintln("heap-idle:", s.HeapIdle,"bytes")
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out += fmt.Sprintln("heap-in-use:", s.HeapInuse, "bytes")
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out += fmt.Sprintln("heap-released:", s.HeapReleased, "bytes")
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out += fmt.Sprintln("heap-objects:", s.HeapObjects)
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out += fmt.Sprintln("stack-in-use:", s.StackInuse, "bytes")
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out += fmt.Sprintln("stack-sys", s.StackSys, "bytes")
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out += fmt.Sprintln("next-gc: when heap-alloc >=", s.NextGC, "bytes")
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out += fmt.Sprintln("last-gc:", s.LastGC, "ns")
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out += fmt.Sprintln("gc-pause:", s.PauseTotalNs, "ns")
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out += fmt.Sprintln("num-gc:", s.NumGC)
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out += fmt.Sprintln("enable-gc:", s.EnableGC)
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out += fmt.Sprintln("debug-gc:", s.DebugGC)
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return out
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}
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func dumpModuleInfo() string {
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var out string
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tmp, _ := debug.ReadBuildInfo()
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if tmp == nil {
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out += fmt.Sprintln("This wasn't compiled with go module support")
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return ""
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}
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out += fmt.Sprintln("mod.Path = ", tmp.Path)
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out += fmt.Sprintln("mod.Main.Path = ", tmp.Main.Path)
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out += fmt.Sprintln("mod.Main.Version = ", tmp.Main.Version)
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out += fmt.Sprintln("mod.Main.Sum = ", tmp.Main.Sum)
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for _, value := range tmp.Deps {
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out += fmt.Sprintln("\tmod.Path = ", value.Path)
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out += fmt.Sprintln("\tmod.Version = ", value.Version)
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}
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return out
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}
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