feat: initial project commit

src/Process.Win.Notify/Program.cs

@@ -0,0 +1,43 @@
+using System.Globalization;
+using System.Runtime.InteropServices;
+
+namespace Geekeey.Extensions.Process.Win.Notify;
+
+internal static class Interop
+{
+	public delegate bool ConsoleCtrlDelegate(uint dwCtrlEvent);
+
+	[DllImport("kernel32.dll", SetLastError = true)]
+	public static extern bool FreeConsole();
+
+	[DllImport("kernel32.dll", SetLastError = true)]
+	public static extern bool AttachConsole(uint dwProcessId);
+
+	[DllImport("kernel32.dll", SetLastError = true)]
+	public static extern bool SetConsoleCtrlHandler(ConsoleCtrlDelegate? handlerRoutine, bool add);
+
+	[DllImport("kernel32.dll", SetLastError = true)]
+	public static extern bool GenerateConsoleCtrlEvent(uint dwCtrlEvent, uint dwProcessGroupId);
+}
+
+internal static class Program
+{
+	public static int Main(string[] args)
+	{
+		var processId = uint.Parse(args[0], CultureInfo.InvariantCulture);
+		var signal = uint.Parse(args[1], CultureInfo.InvariantCulture);
+
+		// detach from the current console, if one is attached to the process.
+		Interop.FreeConsole();
+
+		var success =
+			// attach to the target process group
+			Interop.AttachConsole(processId) &&
+			// set to ignore signals on self, so the proper exit code can be return
+			Interop.SetConsoleCtrlHandler(null, true) &&
+			// send the signal to the process group
+			Interop.GenerateConsoleCtrlEvent(signal, 0);
+
+		return success ? 0 : Marshal.GetLastPInvokeError();
+	}
+}