support windows

arelo.go

@@ -6,7 +6,6 @@ import (
 	"io/ioutil"
 	"log"
 	"os"
-	"os/exec"
 	"os/signal"
 	"path"
 	"strings"
@@ -317,10 +316,9 @@ func runner(ctx context.Context, wg *sync.WaitGroup, cmd []string, delay time.Du
 }
 
 func runCmd(ctx context.Context, cmd []string) error {
-	c := exec.Command(cmd[0], cmd[1:]...)
+	c := prepareCommand(cmd)
 	c.Stdout = os.Stdout
 	c.Stderr = os.Stderr
-	c.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 	if err := c.Start(); err != nil {
 		return err
 	}
@@ -331,7 +329,7 @@ func runCmd(ctx context.Context, cmd []string) error {
 
 	select {
 	case <-ctx.Done():
-		err := syscall.Kill(-c.Process.Pid, syscall.SIGTERM)
+		err := killChilds(c)
 		if err != nil {
 			return xerrors.Errorf("kill error: %w", err)
 		}

cmd_unix.go

@@ -0,0 +1,18 @@
+// +build !windows
+
+package main
+
+import (
+	"os/exec"
+	"syscall"
+)
+
+func prepareCommand(cmd []string) *exec.Cmd {
+	c := exec.Command(cmd[0], cmd[1:]...)
+	c.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
+	return c
+}
+
+func killChilds(c *exec.Cmd) error {
+	return syscall.Kill(-c.Process.Pid, syscall.SIGTERM)
+}

cmd_windows.go

@@ -0,0 +1,19 @@
+// +build windows
+
+package main
+
+import (
+	"os/exec"
+	"strconv"
+)
+
+func prepareCommand(cmd []string) *exec.Cmd {
+	return exec.Command(cmd[0], cmd[1:]...)
+}
+
+func killChilds(c *exec.Cmd) error {
+	kill := exec.Command("TASKKILL", "/T", "/F", "/PID", strconv.Itoa(c.Process.Pid))
+	kill.Stderr = c.Stderr
+	kill.Stdout = c.Stdout
+	return kill.Run()
+}