user32: Reimplement IsHungAppWindow.

dlls/user32/message.c

@@ -3556,6 +3556,13 @@ BOOL WINAPI GetGUIThreadInfo( DWORD id, GUITHREADINFO *info )
  */
 BOOL WINAPI IsHungAppWindow( HWND hWnd )
 {
-    DWORD_PTR dwResult;
+    BOOL ret;
-    return !SendMessageTimeoutA(hWnd, WM_NULL, 0, 0, SMTO_ABORTIFHUNG, 5000, &dwResult);
+
+    SERVER_START_REQ( is_window_hung )
+    {
+        req->win = hWnd;
+        ret = !wine_server_call_err( req ) && reply->is_hung;
+    }
+    SERVER_END_REQ;
+    return ret;
 }

include/wine/server_protocol.h

@@ -2597,6 +2597,19 @@ struct kill_win_timer_reply
 
 
 
+struct is_window_hung_request
+{
+    struct request_header __header;
+    user_handle_t   win;
+};
+struct is_window_hung_reply
+{
+    struct reply_header __header;
+    int is_hung;
+};
+
+
+
 struct get_serial_info_request
 {
     struct request_header __header;
@@ -4382,6 +4395,7 @@ enum request
     REQ_get_message_reply,
     REQ_set_win_timer,
     REQ_kill_win_timer,
+    REQ_is_window_hung,
     REQ_get_serial_info,
     REQ_set_serial_info,
     REQ_register_async,
@@ -4620,6 +4634,7 @@ union generic_request
     struct get_message_reply_request get_message_reply_request;
     struct set_win_timer_request set_win_timer_request;
     struct kill_win_timer_request kill_win_timer_request;
+    struct is_window_hung_request is_window_hung_request;
     struct get_serial_info_request get_serial_info_request;
     struct set_serial_info_request set_serial_info_request;
     struct register_async_request register_async_request;
@@ -4856,6 +4871,7 @@ union generic_reply
     struct get_message_reply_reply get_message_reply_reply;
     struct set_win_timer_reply set_win_timer_reply;
     struct kill_win_timer_reply kill_win_timer_reply;
+    struct is_window_hung_reply is_window_hung_reply;
     struct get_serial_info_reply get_serial_info_reply;
     struct set_serial_info_reply set_serial_info_reply;
     struct register_async_reply register_async_reply;
@@ -4960,6 +4976,6 @@ union generic_reply
     struct add_fd_completion_reply add_fd_completion_reply;
 };
 
-#define SERVER_PROTOCOL_VERSION 334
+#define SERVER_PROTOCOL_VERSION 335
 
 #endif /* __WINE_WINE_SERVER_PROTOCOL_H */

server/protocol.def

@@ -1925,6 +1925,14 @@ enum message_type
 @END
 
 
+/* check if the thread owning the window is hung */
+@REQ(is_window_hung)
+    user_handle_t   win;       /* window handle */
+@REPLY
+    int is_hung;
+@END
+
+
 /* Retrieve info about a serial port */
 @REQ(get_serial_info)
     obj_handle_t handle;       /* handle to comm port */

server/queue.c

@@ -1562,6 +1562,22 @@ void post_win_event( struct thread *thread, unsigned int event,
     }
 }
 
+
+/* check if the thread owning the window is hung */
+DECL_HANDLER(is_window_hung)
+{
+    struct thread *thread;
+
+    thread = get_window_thread( req->win );
+    if (thread)
+    {
+        reply->is_hung = is_queue_hung( thread->queue );
+        release_object( thread );
+    }
+    else reply->is_hung = 0;
+}
+
+
 /* get the message queue of the current thread */
 DECL_HANDLER(get_msg_queue)
 {

server/request.h

@@ -239,6 +239,7 @@ DECL_HANDLER(accept_hardware_message);
 DECL_HANDLER(get_message_reply);
 DECL_HANDLER(set_win_timer);
 DECL_HANDLER(kill_win_timer);
+DECL_HANDLER(is_window_hung);
 DECL_HANDLER(get_serial_info);
 DECL_HANDLER(set_serial_info);
 DECL_HANDLER(register_async);
@@ -476,6 +477,7 @@ static const req_handler req_handlers[REQ_NB_REQUESTS] =
     (req_handler)req_get_message_reply,
     (req_handler)req_set_win_timer,
     (req_handler)req_kill_win_timer,
+    (req_handler)req_is_window_hung,
     (req_handler)req_get_serial_info,
     (req_handler)req_set_serial_info,
     (req_handler)req_register_async,

server/trace.c

@@ -2412,6 +2412,16 @@ static void dump_kill_win_timer_request( const struct kill_win_timer_request *re
     fprintf( stderr, " id=%lx", req->id );
 }
 
+static void dump_is_window_hung_request( const struct is_window_hung_request *req )
+{
+    fprintf( stderr, " win=%p", req->win );
+}
+
+static void dump_is_window_hung_reply( const struct is_window_hung_reply *req )
+{
+    fprintf( stderr, " is_hung=%d", req->is_hung );
+}
+
 static void dump_get_serial_info_request( const struct get_serial_info_request *req )
 {
     fprintf( stderr, " handle=%p", req->handle );
@@ -3878,6 +3888,7 @@ static const dump_func req_dumpers[REQ_NB_REQUESTS] = {
     (dump_func)dump_get_message_reply_request,
     (dump_func)dump_set_win_timer_request,
     (dump_func)dump_kill_win_timer_request,
+    (dump_func)dump_is_window_hung_request,
     (dump_func)dump_get_serial_info_request,
     (dump_func)dump_set_serial_info_request,
     (dump_func)dump_register_async_request,
@@ -4112,6 +4123,7 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
     (dump_func)dump_get_message_reply_reply,
     (dump_func)dump_set_win_timer_reply,
     (dump_func)0,
+    (dump_func)dump_is_window_hung_reply,
     (dump_func)dump_get_serial_info_reply,
     (dump_func)0,
     (dump_func)0,
@@ -4346,6 +4358,7 @@ static const char * const req_names[REQ_NB_REQUESTS] = {
     "get_message_reply",
     "set_win_timer",
     "kill_win_timer",
+    "is_window_hung",
     "get_serial_info",
     "set_serial_info",
     "register_async",