feat: when sigkill is used use taskkill on Windows

packages/process_run/doc/shell.md

@@ -96,7 +96,7 @@ $ alias ds='dart pub global run process_run:shell'
 
 ### Helper
 
-`ShellLinesController` allows listeninging line from a command line script.
+`ShellLinesController` allows listening line from a command line script.
 
 ```dart
 var controller = ShellLinesController();
@@ -202,3 +202,12 @@ Then run your commands via `osascript` like so:
 ```
 
 That will prompt for the user to type his password and then will run the script.
+
+### Killing a shell
+
+You can kill a shell using the `kill()` method. It will kill the shell and all its spawn children.
+By default its uses `ProcessSignal.sigterm` signal. You can specify a different signal using the `signal` parameter.
+
+A special trick is made when `ProcessSignal.sigkill` used as it will force killing all children processes on Windows (taskkill), MacOS and Linux (pkill).
+As I was experiencing with `dhttpd`, killing the process was not really killing the server so using `sigkill` (and so taskkill and pkill) was properly
+killing the server.

packages/process_run/lib/src/shell.dart

@@ -297,19 +297,35 @@ abstract class Shell implements ShellCore, ShellCoreSync {
         io.stderr.writeln(
             'killing $_killedRunId, ${_currentProcessToString()} signal $_killedProcessSignal');
 
-        /// Workaround for linux when using sigkill to kill the children processes too
-        if ((io.Platform.isLinux || io.Platform.isMacOS) &&
-            _killedProcessSignal == ProcessSignal.sigkill) {
-          try {
-            /// Kill the children
-            var pid = _currentProcess!.pid;
-            // Kill children process
-            runExecutableArgumentsSync('pkill', ['-P', '$pid']);
-          } catch (_) {}
+        if (_killedProcessSignal == ProcessSignal.sigkill) {
+          var pid = _currentProcess!.pid;
+
+          /// Workaround when using sigkill to kill the children processes too
+          if (io.Platform.isLinux || io.Platform.isMacOS) {
+            try {
+              /// Kill the children
+              runExecutableArgumentsSync('pkill', ['-P', '$pid']);
+            } catch (_) {}
+          } else if (io.Platform.isWindows) {
+            try {
+              /// Kill the children
+              var pid = _currentProcess!.pid;
+              // Kill children process
+              // /pid <processID>	Specifies the process ID of the process to be terminated.
+              // /f	Specifies that processes be forcefully ended. This parameter is ignored for remote processes; all remote processes are forcefully ended.
+              // /t	Ends the specified process and any child processes started by it.
+              runExecutableArgumentsSync(
+                  'taskkill', ['/t', '/f', '/pid', '$pid']);
+            } catch (_) {}
+          }
         }
 
-        /// kill the parent process
-        result = _currentProcess!.kill(_killedProcessSignal);
+        try {
+          /// kill the parent process
+          result = _currentProcess!.kill(_killedProcessSignal);
+        } catch (_) {
+          result = false;
+        }
         _clearPreviousContext();
       } catch (_) {
         result = false;