* ser-mingw.c: Include <conio.h>.

(struct ser_console_state, struct net_windows_state): Add exit_select,
	have_stopped, thread.
	(pipe_select_thread, console_select_thread)
	(net_windows_select_thread): Don't create a local state copy or
	close stop_select.  Exit on exit_select instead of stop_select.  Set
	have_stopped.
	(console_select_thread): Don't report control keypresses as pending
	input.
	(pipe_select_thread): Allow stop_select to interrupt sleeping.
	(set_console_wait_handle): Create exit_select and have_stopped.
	Save the thread handle.  Check _kbhit before starting a thread.
	(ser_console_done_wait_handle): New.
	(ser_console_close): Close new handles.  Wait for the thread to
	exit.
	(new_windows_select_thread): Assert that an event occurred.
	(net_windows_wait_handle): Check for pending input before starting
	a thread.
	(net_windows_done_wait_handle): New.
	(net_windows_open): Create exit_select and have_stopped.
	Save the thread handle.
	(net_windows_close): Close new handles.  Wait for the thread to
	exit.
	(_intiialize_ser_windows): Register done_wait_handle methods.

	* serial.c [USE_WIN32API] (serial_done_wait_handle): New.
	* serial.h [USE_WIN32API] (struct serial_ops): Add done_wait_handle.
	[USE_WIN32API] (serial_done_wait_handle): New prototype.
	* mingw-hdep.c (gdb_select): Use serial_done_wait_handle.

gdb/serial.c

@@ -557,6 +557,13 @@ serial_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except)
       *except = NULL;
     }
 }
+
+void
+serial_done_wait_handle (struct serial *scb)
+{
+  if (scb->ops->done_wait_handle)
+    scb->ops->done_wait_handle (scb);
+}
 #endif
 
 #if 0