whatcanGOwrong

go/pkg/mod/github.com/go-delve/delve@v1.23.0/_fixtures/spawn.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"time"
+)
+
+func traceme1() {
+	fmt.Printf("parent starting\n")
+}
+
+func traceme2(n string) {
+	fmt.Printf("hello from %s\n", n)
+}
+
+func traceme3() {
+	fmt.Printf("done\n")
+}
+
+func main() {
+	exe, _ := os.Executable()
+	switch os.Args[1] {
+	case "spawn":
+		traceme1()
+		n, _ := strconv.Atoi(os.Args[2])
+		cmds := []*exec.Cmd{}
+		for i := 0; i < n; i++ {
+			cmd := exec.Command(exe, "child", fmt.Sprintf("C%d", i))
+			cmd.Stdout = os.Stdout
+			cmd.Start()
+			cmds = append(cmds, cmd)
+		}
+
+		for _, cmd := range cmds {
+			cmd.Wait()
+		}
+
+		time.Sleep(1 * time.Second)
+		traceme3()
+
+	case "child":
+		traceme2(os.Args[2])
+
+	}
+}