2 * Server-side message queues
4 * Copyright (C) 2000 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
30 #define WIN32_NO_STATUS
44 #define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
45 #define WM_NCMOUSELAST (WM_NCMOUSEFIRST+(WM_MOUSELAST-WM_MOUSEFIRST))
47 enum message_kind { SEND_MESSAGE, POST_MESSAGE };
48 #define NB_MSG_KINDS (POST_MESSAGE+1)
53 struct list sender_entry; /* entry in sender list */
54 struct message *msg; /* message the result is for */
55 struct message_result *recv_next; /* next in receiver list */
56 struct msg_queue *sender; /* sender queue */
57 struct msg_queue *receiver; /* receiver queue */
58 int replied; /* has it been replied to? */
59 unsigned int result; /* reply result */
60 unsigned int error; /* error code to pass back to sender */
61 struct message *callback_msg; /* message to queue for callback */
62 void *data; /* message reply data */
63 unsigned int data_size; /* size of message reply data */
64 struct timeout_user *timeout; /* result timeout */
69 struct list entry; /* entry in message list */
70 enum message_type type; /* message type */
71 user_handle_t win; /* window handle */
72 unsigned int msg; /* message code */
73 unsigned long wparam; /* parameters */
74 unsigned long lparam; /* parameters */
75 unsigned long info; /* extra info */
76 int x; /* x position */
77 int y; /* y position */
78 unsigned int time; /* message time */
79 void *data; /* message data for sent messages */
80 unsigned int data_size; /* size of message data */
81 unsigned int unique_id; /* unique id for nested hw message waits */
82 struct message_result *result; /* result in sender queue */
87 struct list entry; /* entry in timer list */
88 timeout_t when; /* next expiration */
89 unsigned int rate; /* timer rate in ms */
90 user_handle_t win; /* window handle */
91 unsigned int msg; /* message to post */
92 unsigned long id; /* timer id */
93 unsigned long lparam; /* lparam for message */
98 struct object obj; /* object header */
99 struct desktop *desktop; /* desktop that this thread input belongs to */
100 user_handle_t focus; /* focus window */
101 user_handle_t capture; /* capture window */
102 user_handle_t active; /* active window */
103 user_handle_t menu_owner; /* current menu owner window */
104 user_handle_t move_size; /* current moving/resizing window */
105 user_handle_t caret; /* caret window */
106 rectangle_t caret_rect; /* caret rectangle */
107 int caret_hide; /* caret hide count */
108 int caret_state; /* caret on/off state */
109 struct list msg_list; /* list of hardware messages */
110 unsigned char keystate[256]; /* state of each key */
115 struct object obj; /* object header */
116 struct fd *fd; /* optional file descriptor to poll */
117 unsigned int wake_bits; /* wakeup bits */
118 unsigned int wake_mask; /* wakeup mask */
119 unsigned int changed_bits; /* changed wakeup bits */
120 unsigned int changed_mask; /* changed wakeup mask */
121 int paint_count; /* pending paint messages count */
122 int quit_message; /* is there a pending quit message? */
123 int exit_code; /* exit code of pending quit message */
124 struct list msg_list[NB_MSG_KINDS]; /* lists of messages */
125 struct list send_result; /* stack of sent messages waiting for result */
126 struct list callback_result; /* list of callback messages waiting for result */
127 struct message_result *recv_result; /* stack of received messages waiting for result */
128 struct list pending_timers; /* list of pending timers */
129 struct list expired_timers; /* list of expired timers */
130 unsigned long next_timer_id; /* id for the next timer with a 0 window */
131 struct timeout_user *timeout; /* timeout for next timer to expire */
132 struct thread_input *input; /* thread input descriptor */
133 struct hook_table *hooks; /* hook table */
134 timeout_t last_get_msg; /* time of last get message call */
137 static void msg_queue_dump( struct object *obj, int verbose );
138 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry );
139 static void msg_queue_remove_queue( struct object *obj, struct wait_queue_entry *entry );
140 static int msg_queue_signaled( struct object *obj, struct thread *thread );
141 static int msg_queue_satisfied( struct object *obj, struct thread *thread );
142 static void msg_queue_destroy( struct object *obj );
143 static void msg_queue_poll_event( struct fd *fd, int event );
144 static void thread_input_dump( struct object *obj, int verbose );
145 static void thread_input_destroy( struct object *obj );
146 static void timer_callback( void *private );
148 static const struct object_ops msg_queue_ops =
150 sizeof(struct msg_queue), /* size */
151 msg_queue_dump, /* dump */
152 msg_queue_add_queue, /* add_queue */
153 msg_queue_remove_queue, /* remove_queue */
154 msg_queue_signaled, /* signaled */
155 msg_queue_satisfied, /* satisfied */
156 no_signal, /* signal */
157 no_get_fd, /* get_fd */
158 no_map_access, /* map_access */
159 no_lookup_name, /* lookup_name */
160 no_open_file, /* open_file */
161 no_close_handle, /* close_handle */
162 msg_queue_destroy /* destroy */
165 static const struct fd_ops msg_queue_fd_ops =
167 NULL, /* get_poll_events */
168 msg_queue_poll_event, /* poll_event */
170 NULL, /* get_fd_type */
172 NULL, /* queue_async */
173 NULL, /* reselect_async */
174 NULL /* cancel async */
178 static const struct object_ops thread_input_ops =
180 sizeof(struct thread_input), /* size */
181 thread_input_dump, /* dump */
182 no_add_queue, /* add_queue */
183 NULL, /* remove_queue */
185 NULL, /* satisfied */
186 no_signal, /* signal */
187 no_get_fd, /* get_fd */
188 no_map_access, /* map_access */
189 no_lookup_name, /* lookup_name */
190 no_open_file, /* open_file */
191 no_close_handle, /* close_handle */
192 thread_input_destroy /* destroy */
195 /* pointer to input structure of foreground thread */
196 static struct thread_input *foreground_input;
197 static unsigned int last_input_time;
199 static void free_message( struct message *msg );
201 /* set the caret window in a given thread input */
202 static void set_caret_window( struct thread_input *input, user_handle_t win )
204 if (!win || win != input->caret)
206 input->caret_rect.left = 0;
207 input->caret_rect.top = 0;
208 input->caret_rect.right = 0;
209 input->caret_rect.bottom = 0;
212 input->caret_hide = 1;
213 input->caret_state = 0;
216 /* create a thread input object */
217 static struct thread_input *create_thread_input( struct thread *thread )
219 struct thread_input *input;
221 if ((input = alloc_object( &thread_input_ops )))
226 input->menu_owner = 0;
227 input->move_size = 0;
228 list_init( &input->msg_list );
229 set_caret_window( input, 0 );
230 memset( input->keystate, 0, sizeof(input->keystate) );
232 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
234 release_object( input );
241 /* release the thread input data of a given thread */
242 static inline void release_thread_input( struct thread *thread )
244 struct thread_input *input = thread->queue->input;
247 release_object( input );
248 thread->queue->input = NULL;
251 /* create a message queue object */
252 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
254 struct msg_queue *queue;
257 if (!input && !(input = create_thread_input( thread ))) return NULL;
258 if ((queue = alloc_object( &msg_queue_ops )))
261 queue->wake_bits = 0;
262 queue->wake_mask = 0;
263 queue->changed_bits = 0;
264 queue->changed_mask = 0;
265 queue->paint_count = 0;
266 queue->quit_message = 0;
267 queue->recv_result = NULL;
268 queue->next_timer_id = 1;
269 queue->timeout = NULL;
270 queue->input = (struct thread_input *)grab_object( input );
272 queue->last_get_msg = current_time;
273 list_init( &queue->send_result );
274 list_init( &queue->callback_result );
275 list_init( &queue->pending_timers );
276 list_init( &queue->expired_timers );
277 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
279 thread->queue = queue;
280 if (!thread->process->queue)
281 thread->process->queue = (struct msg_queue *)grab_object( queue );
283 release_object( input );
287 /* free the message queue of a thread at thread exit */
288 void free_msg_queue( struct thread *thread )
290 struct process *process = thread->process;
292 remove_thread_hooks( thread );
293 if (!thread->queue) return;
294 if (process->queue == thread->queue) /* is it the process main queue? */
296 release_object( process->queue );
297 process->queue = NULL;
298 if (process->idle_event)
300 set_event( process->idle_event );
301 release_object( process->idle_event );
302 process->idle_event = NULL;
305 release_object( thread->queue );
306 thread->queue = NULL;
309 /* get the hook table for a given thread */
310 struct hook_table *get_queue_hooks( struct thread *thread )
312 if (!thread->queue) return NULL;
313 return thread->queue->hooks;
316 /* set the hook table for a given thread, allocating the queue if needed */
317 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
319 struct msg_queue *queue = thread->queue;
320 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
321 if (queue->hooks) release_object( queue->hooks );
322 queue->hooks = hooks;
325 /* check the queue status */
326 static inline int is_signaled( struct msg_queue *queue )
328 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
331 /* set some queue bits */
332 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
334 queue->wake_bits |= bits;
335 queue->changed_bits |= bits;
336 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
339 /* clear some queue bits */
340 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
342 queue->wake_bits &= ~bits;
343 queue->changed_bits &= ~bits;
346 /* check whether msg is a keyboard message */
347 static inline int is_keyboard_msg( struct message *msg )
349 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
352 /* check if message is matched by the filter */
353 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
355 return (msg >= first && msg <= last);
358 /* check whether a message filter contains at least one potential hardware message */
359 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
361 /* hardware message ranges are (in numerical order):
362 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
363 * WM_KEYFIRST .. WM_KEYLAST
364 * WM_MOUSEFIRST .. WM_MOUSELAST
366 if (last < WM_NCMOUSEFIRST) return 0;
367 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
368 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
369 if (first > WM_MOUSELAST) return 0;
373 /* get the QS_* bit corresponding to a given hardware message */
374 static inline int get_hardware_msg_bit( struct message *msg )
376 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
377 if (is_keyboard_msg( msg )) return QS_KEY;
378 return QS_MOUSEBUTTON;
381 /* get the current thread queue, creating it if needed */
382 static inline struct msg_queue *get_current_queue(void)
384 struct msg_queue *queue = current->queue;
385 if (!queue) queue = create_msg_queue( current, NULL );
389 /* get a (pseudo-)unique id to tag hardware messages */
390 static inline unsigned int get_unique_id(void)
392 static unsigned int id;
393 if (!++id) id = 1; /* avoid an id of 0 */
397 /* try to merge a message with the last in the list; return 1 if successful */
398 static int merge_message( struct thread_input *input, const struct message *msg )
400 struct message *prev;
401 struct list *ptr = list_tail( &input->msg_list );
404 prev = LIST_ENTRY( ptr, struct message, entry );
405 if (prev->unique_id) return 0;
406 if (prev->result) return 0;
407 if (prev->win != msg->win) return 0;
408 if (prev->msg != msg->msg) return 0;
409 if (prev->type != msg->type) return 0;
410 /* now we can merge it */
411 prev->wparam = msg->wparam;
412 prev->lparam = msg->lparam;
415 prev->time = msg->time;
416 prev->info = msg->info;
420 /* free a result structure */
421 static void free_result( struct message_result *result )
423 if (result->timeout) remove_timeout_user( result->timeout );
424 free( result->data );
425 if (result->callback_msg) free_message( result->callback_msg );
429 /* remove the result from the sender list it is on */
430 static inline void remove_result_from_sender( struct message_result *result )
432 assert( result->sender );
434 list_remove( &result->sender_entry );
435 result->sender = NULL;
436 if (!result->receiver) free_result( result );
439 /* store the message result in the appropriate structure */
440 static void store_message_result( struct message_result *res, unsigned int result,
443 res->result = result;
448 remove_timeout_user( res->timeout );
453 if (res->callback_msg)
455 /* queue the callback message in the sender queue */
456 struct callback_msg_data *data = res->callback_msg->data;
457 data->result = result;
458 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
459 set_queue_bits( res->sender, QS_SENDMESSAGE );
460 res->callback_msg = NULL;
461 remove_result_from_sender( res );
465 /* wake sender queue if waiting on this result */
466 if (list_head(&res->sender->send_result) == &res->sender_entry)
467 set_queue_bits( res->sender, QS_SMRESULT );
473 /* free a message when deleting a queue or window */
474 static void free_message( struct message *msg )
476 struct message_result *result = msg->result;
482 result->receiver = NULL;
483 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
485 else free_result( result );
491 /* remove (and free) a message from a message list */
492 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
493 enum message_kind kind )
495 list_remove( &msg->entry );
499 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
502 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
503 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
509 /* message timed out without getting a reply */
510 static void result_timeout( void *private )
512 struct message_result *result = private;
514 assert( !result->replied );
516 result->timeout = NULL;
518 if (result->msg) /* not received yet */
520 struct message *msg = result->msg;
524 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
525 result->receiver = NULL;
528 free_result( result );
533 store_message_result( result, 0, STATUS_TIMEOUT );
536 /* allocate and fill a message result structure */
537 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
538 struct msg_queue *recv_queue,
539 struct message *msg, timeout_t timeout )
541 struct message_result *result = mem_alloc( sizeof(*result) );
545 result->sender = send_queue;
546 result->receiver = recv_queue;
549 result->data_size = 0;
550 result->timeout = NULL;
552 if (msg->type == MSG_CALLBACK)
554 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
561 callback_msg->type = MSG_CALLBACK_RESULT;
562 callback_msg->win = msg->win;
563 callback_msg->msg = msg->msg;
564 callback_msg->wparam = 0;
565 callback_msg->lparam = 0;
566 callback_msg->time = get_tick_count();
569 callback_msg->info = 0;
570 callback_msg->result = NULL;
571 /* steal the data from the original message */
572 callback_msg->data = msg->data;
573 callback_msg->data_size = msg->data_size;
577 result->callback_msg = callback_msg;
578 list_add_head( &send_queue->callback_result, &result->sender_entry );
582 result->callback_msg = NULL;
583 list_add_head( &send_queue->send_result, &result->sender_entry );
586 if (timeout != TIMEOUT_INFINITE)
587 result->timeout = add_timeout_user( timeout, result_timeout, result );
592 /* receive a message, removing it from the sent queue */
593 static void receive_message( struct msg_queue *queue, struct message *msg,
594 struct get_message_reply *reply )
596 struct message_result *result = msg->result;
598 reply->total = msg->data_size;
599 if (msg->data_size > get_reply_max_size())
601 set_error( STATUS_BUFFER_OVERFLOW );
604 reply->type = msg->type;
605 reply->win = msg->win;
606 reply->msg = msg->msg;
607 reply->wparam = msg->wparam;
608 reply->lparam = msg->lparam;
611 reply->time = msg->time;
612 reply->info = msg->info;
614 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
616 list_remove( &msg->entry );
617 /* put the result on the receiver result stack */
621 result->recv_next = queue->recv_result;
622 queue->recv_result = result;
625 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
628 /* set the result of the current received message */
629 static void reply_message( struct msg_queue *queue, unsigned int result,
630 unsigned int error, int remove, const void *data, data_size_t len )
632 struct message_result *res = queue->recv_result;
636 queue->recv_result = res->recv_next;
637 res->receiver = NULL;
638 if (!res->sender) /* no one waiting for it */
646 if (len && (res->data = memdup( data, len ))) res->data_size = len;
647 store_message_result( res, result, error );
651 /* retrieve a posted message */
652 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
653 unsigned int first, unsigned int last, unsigned int flags,
654 struct get_message_reply *reply )
658 /* check against the filters */
659 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
661 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
662 if (!check_msg_filter( msg->msg, first, last )) continue;
663 goto found; /* found one */
667 /* return it to the app */
669 reply->total = msg->data_size;
670 if (msg->data_size > get_reply_max_size())
672 set_error( STATUS_BUFFER_OVERFLOW );
675 reply->type = msg->type;
676 reply->win = msg->win;
677 reply->msg = msg->msg;
678 reply->wparam = msg->wparam;
679 reply->lparam = msg->lparam;
682 reply->time = msg->time;
683 reply->info = msg->info;
685 if (flags & PM_REMOVE)
689 set_reply_data_ptr( msg->data, msg->data_size );
693 remove_queue_message( queue, msg, POST_MESSAGE );
695 else if (msg->data) set_reply_data( msg->data, msg->data_size );
700 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
701 struct get_message_reply *reply )
703 if (queue->quit_message)
706 reply->type = MSG_POSTED;
708 reply->msg = WM_QUIT;
709 reply->wparam = queue->exit_code;
713 reply->time = get_tick_count();
716 if (flags & PM_REMOVE)
718 queue->quit_message = 0;
719 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
720 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
728 /* empty a message list and free all the messages */
729 static void empty_msg_list( struct list *list )
733 while ((ptr = list_head( list )) != NULL)
735 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
736 list_remove( &msg->entry );
741 /* cleanup all pending results when deleting a queue */
742 static void cleanup_results( struct msg_queue *queue )
746 while ((entry = list_head( &queue->send_result )) != NULL)
748 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
751 while ((entry = list_head( &queue->callback_result )) != NULL)
753 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
756 while (queue->recv_result)
757 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
760 /* check if the thread owning the queue is hung (not checking for messages) */
761 static int is_queue_hung( struct msg_queue *queue )
763 struct wait_queue_entry *entry;
765 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
766 return 0; /* less than 5 seconds since last get message -> not hung */
768 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
770 if (entry->thread->queue == queue)
771 return 0; /* thread is waiting on queue -> not hung */
776 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
778 struct msg_queue *queue = (struct msg_queue *)obj;
779 struct process *process = entry->thread->process;
781 /* a thread can only wait on its own queue */
782 if (entry->thread->queue != queue)
784 set_error( STATUS_ACCESS_DENIED );
787 /* if waiting on the main process queue, set the idle event */
788 if (process->queue == queue)
790 if (process->idle_event) set_event( process->idle_event );
792 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
793 set_fd_events( queue->fd, POLLIN );
794 add_queue( obj, entry );
798 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
800 struct msg_queue *queue = (struct msg_queue *)obj;
801 struct process *process = entry->thread->process;
803 remove_queue( obj, entry );
804 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
805 set_fd_events( queue->fd, 0 );
807 assert( entry->thread->queue == queue );
809 /* if waiting on the main process queue, reset the idle event */
810 if (process->queue == queue)
812 if (process->idle_event) reset_event( process->idle_event );
816 static void msg_queue_dump( struct object *obj, int verbose )
818 struct msg_queue *queue = (struct msg_queue *)obj;
819 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
820 queue->wake_bits, queue->wake_mask );
823 static int msg_queue_signaled( struct object *obj, struct thread *thread )
825 struct msg_queue *queue = (struct msg_queue *)obj;
830 if ((ret = check_fd_events( queue->fd, POLLIN )))
831 /* stop waiting on select() if we are signaled */
832 set_fd_events( queue->fd, 0 );
833 else if (!list_empty( &obj->wait_queue ))
834 /* restart waiting on poll() if we are no longer signaled */
835 set_fd_events( queue->fd, POLLIN );
837 return ret || is_signaled( queue );
840 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
842 struct msg_queue *queue = (struct msg_queue *)obj;
843 queue->wake_mask = 0;
844 queue->changed_mask = 0;
845 return 0; /* Not abandoned */
848 static void msg_queue_destroy( struct object *obj )
850 struct msg_queue *queue = (struct msg_queue *)obj;
854 cleanup_results( queue );
855 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
857 while ((ptr = list_head( &queue->pending_timers )))
859 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
860 list_remove( &timer->entry );
863 while ((ptr = list_head( &queue->expired_timers )))
865 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
866 list_remove( &timer->entry );
869 if (queue->timeout) remove_timeout_user( queue->timeout );
870 if (queue->input) release_object( queue->input );
871 if (queue->hooks) release_object( queue->hooks );
872 if (queue->fd) release_object( queue->fd );
875 static void msg_queue_poll_event( struct fd *fd, int event )
877 struct msg_queue *queue = get_fd_user( fd );
878 assert( queue->obj.ops == &msg_queue_ops );
880 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
881 wake_up( &queue->obj, 0 );
884 static void thread_input_dump( struct object *obj, int verbose )
886 struct thread_input *input = (struct thread_input *)obj;
887 fprintf( stderr, "Thread input focus=%p capture=%p active=%p\n",
888 input->focus, input->capture, input->active );
891 static void thread_input_destroy( struct object *obj )
893 struct thread_input *input = (struct thread_input *)obj;
895 if (foreground_input == input) foreground_input = NULL;
896 empty_msg_list( &input->msg_list );
897 if (input->desktop) release_object( input->desktop );
900 /* fix the thread input data when a window is destroyed */
901 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
903 struct thread_input *input = queue->input;
905 if (window == input->focus) input->focus = 0;
906 if (window == input->capture) input->capture = 0;
907 if (window == input->active) input->active = 0;
908 if (window == input->menu_owner) input->menu_owner = 0;
909 if (window == input->move_size) input->move_size = 0;
910 if (window == input->caret) set_caret_window( input, 0 );
913 /* check if the specified window can be set in the input data of a given queue */
914 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
916 struct thread *thread;
919 if (!window) return 1; /* we can always clear the data */
921 if ((thread = get_window_thread( window )))
923 ret = (queue->input == thread->queue->input);
924 if (!ret) set_error( STATUS_ACCESS_DENIED );
925 release_object( thread );
927 else set_error( STATUS_INVALID_HANDLE );
932 /* make sure the specified thread has a queue */
933 int init_thread_queue( struct thread *thread )
935 if (thread->queue) return 1;
936 return (create_msg_queue( thread, NULL ) != NULL);
939 /* attach two thread input data structures */
940 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
942 struct desktop *desktop;
943 struct thread_input *input;
945 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
946 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
947 input = (struct thread_input *)grab_object( thread_to->queue->input );
948 if (input->desktop != desktop)
950 set_error( STATUS_ACCESS_DENIED );
951 release_object( input );
952 release_object( desktop );
955 release_object( desktop );
957 if (thread_from->queue)
959 release_thread_input( thread_from );
960 thread_from->queue->input = input;
964 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
966 memset( input->keystate, 0, sizeof(input->keystate) );
970 /* detach two thread input data structures */
971 void detach_thread_input( struct thread *thread_from )
973 struct thread_input *input;
975 if ((input = create_thread_input( thread_from )))
977 release_thread_input( thread_from );
978 thread_from->queue->input = input;
983 /* set the next timer to expire */
984 static void set_next_timer( struct msg_queue *queue )
990 remove_timeout_user( queue->timeout );
991 queue->timeout = NULL;
993 if ((ptr = list_head( &queue->pending_timers )))
995 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
996 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
998 /* set/clear QS_TIMER bit */
999 if (list_empty( &queue->expired_timers ))
1000 clear_queue_bits( queue, QS_TIMER );
1002 set_queue_bits( queue, QS_TIMER );
1005 /* find a timer from its window and id */
1006 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1007 unsigned int msg, unsigned long id )
1011 /* we need to search both lists */
1013 LIST_FOR_EACH( ptr, &queue->pending_timers )
1015 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1016 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1018 LIST_FOR_EACH( ptr, &queue->expired_timers )
1020 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1021 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1026 /* callback for the next timer expiration */
1027 static void timer_callback( void *private )
1029 struct msg_queue *queue = private;
1032 queue->timeout = NULL;
1033 /* move on to the next timer */
1034 ptr = list_head( &queue->pending_timers );
1036 list_add_tail( &queue->expired_timers, ptr );
1037 set_next_timer( queue );
1040 /* link a timer at its rightful place in the queue list */
1041 static void link_timer( struct msg_queue *queue, struct timer *timer )
1045 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1047 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1048 if (t->when >= timer->when) break;
1050 list_add_before( ptr, &timer->entry );
1053 /* remove a timer from the queue timer list and free it */
1054 static void free_timer( struct msg_queue *queue, struct timer *timer )
1056 list_remove( &timer->entry );
1058 set_next_timer( queue );
1061 /* restart an expired timer */
1062 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1064 list_remove( &timer->entry );
1065 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1066 link_timer( queue, timer );
1067 set_next_timer( queue );
1070 /* find an expired timer matching the filtering parameters */
1071 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1072 unsigned int get_first, unsigned int get_last,
1077 LIST_FOR_EACH( ptr, &queue->expired_timers )
1079 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1080 if (win && timer->win != win) continue;
1081 if (check_msg_filter( timer->msg, get_first, get_last ))
1083 if (remove) restart_timer( queue, timer );
1091 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1093 struct timer *timer = mem_alloc( sizeof(*timer) );
1096 timer->rate = max( rate, 1 );
1097 timer->when = current_time + (timeout_t)timer->rate * 10000;
1098 link_timer( queue, timer );
1099 /* check if we replaced the next timer */
1100 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1105 /* change the input key state for a given key */
1106 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1110 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1111 input->keystate[key] |= 0x80;
1113 else input->keystate[key] &= ~0x80;
1116 /* update the input key state for a keyboard message */
1117 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1120 int down = 0, extended;
1124 case WM_LBUTTONDOWN:
1128 set_input_key_state( input, VK_LBUTTON, down );
1130 case WM_MBUTTONDOWN:
1134 set_input_key_state( input, VK_MBUTTON, down );
1136 case WM_RBUTTONDOWN:
1140 set_input_key_state( input, VK_RBUTTON, down );
1142 case WM_XBUTTONDOWN:
1146 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1147 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1155 key = (unsigned char)msg->wparam;
1156 extended = ((msg->lparam >> 16) & KF_EXTENDED) != 0;
1157 set_input_key_state( input, key, down );
1161 set_input_key_state( input, extended ? VK_RSHIFT : VK_LSHIFT, down );
1164 set_input_key_state( input, extended ? VK_RCONTROL : VK_LCONTROL, down );
1167 set_input_key_state( input, extended ? VK_RMENU : VK_LMENU, down );
1171 set_input_key_state( input, VK_CONTROL, down );
1175 set_input_key_state( input, VK_MENU, down );
1179 set_input_key_state( input, VK_SHIFT, down );
1186 /* release the hardware message currently being processed by the given thread */
1187 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1188 int remove, user_handle_t new_win )
1190 struct thread_input *input = queue->input;
1191 struct message *msg;
1193 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1195 if (msg->unique_id == hw_id) break;
1197 if (&msg->entry == &input->msg_list) return; /* not found */
1199 /* clear the queue bit for that message */
1200 if (remove || new_win)
1202 struct message *other;
1205 clr_bit = get_hardware_msg_bit( msg );
1206 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1208 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1214 if (clr_bit) clear_queue_bits( queue, clr_bit );
1217 if (new_win) /* set the new window */
1219 struct thread *owner = get_window_thread( new_win );
1222 if (owner->queue->input == input)
1225 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1228 release_object( owner );
1233 update_input_key_state( input, msg );
1234 list_remove( &msg->entry );
1235 free_message( msg );
1239 /* find the window that should receive a given hardware message */
1240 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1241 unsigned int *msg_code )
1243 user_handle_t win = 0;
1245 *msg_code = msg->msg;
1246 if (is_keyboard_msg( msg ))
1248 if (input && !(win = input->focus))
1250 win = input->active;
1251 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1254 else /* mouse message */
1256 if (!input || !(win = input->capture))
1258 if (!(win = msg->win) || !is_window_visible( win ))
1260 if (input) win = window_from_point( input->desktop, msg->x, msg->y );
1267 /* queue a hardware message into a given thread input */
1268 static void queue_hardware_message( struct msg_queue *queue, struct message *msg )
1271 struct thread *thread;
1272 struct thread_input *input = queue ? queue->input : foreground_input;
1273 unsigned int msg_code;
1275 last_input_time = get_tick_count();
1276 win = find_hardware_message_window( input, msg, &msg_code );
1277 if (!win || !(thread = get_window_thread(win)))
1279 if (input) update_input_key_state( input, msg );
1283 input = thread->queue->input;
1285 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1288 msg->unique_id = 0; /* will be set once we return it to the app */
1289 list_add_tail( &input->msg_list, &msg->entry );
1290 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1292 release_object( thread );
1295 /* check message filter for a hardware message */
1296 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1297 user_handle_t filter_win, unsigned int first, unsigned int last )
1299 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1301 /* we can only test the window for a keyboard message since the
1302 * dest window for a mouse message depends on hittest */
1303 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1305 /* the message code is final for a keyboard message, we can simply check it */
1306 return check_msg_filter( msg_code, first, last );
1308 else /* mouse message */
1310 /* we need to check all possible values that the message can have in the end */
1312 if (check_msg_filter( msg_code, first, last )) return 1;
1313 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1315 /* all other messages can become non-client messages */
1316 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1318 /* clicks can become double-clicks or non-client double-clicks */
1319 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1320 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1322 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1323 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1330 /* find a hardware message for the given queue */
1331 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1332 unsigned int first, unsigned int last, struct get_message_reply *reply )
1334 struct thread_input *input = thread->queue->input;
1335 struct thread *win_thread;
1338 int clear_bits, got_one = 0;
1339 unsigned int msg_code;
1341 ptr = list_head( &input->msg_list );
1346 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1347 if (msg->unique_id == hw_id) break;
1348 ptr = list_next( &input->msg_list, ptr );
1350 if (!ptr) ptr = list_head( &input->msg_list );
1351 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1354 if (ptr == list_head( &input->msg_list ))
1355 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1357 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1361 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1362 ptr = list_next( &input->msg_list, ptr );
1363 win = find_hardware_message_window( input, msg, &msg_code );
1364 if (!win || !(win_thread = get_window_thread( win )))
1366 /* no window at all, remove it */
1367 update_input_key_state( input, msg );
1368 list_remove( &msg->entry );
1369 free_message( msg );
1372 if (win_thread != thread)
1374 if (win_thread->queue->input == input)
1376 /* wake the other thread */
1377 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1382 /* for another thread input, drop it */
1383 update_input_key_state( input, msg );
1384 list_remove( &msg->entry );
1385 free_message( msg );
1387 release_object( win_thread );
1390 release_object( win_thread );
1392 /* if we already got a message for another thread, or if it doesn't
1393 * match the filter we skip it */
1394 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1396 clear_bits &= ~get_hardware_msg_bit( msg );
1399 /* now we can return it */
1400 if (!msg->unique_id) msg->unique_id = get_unique_id();
1401 reply->type = MSG_HARDWARE;
1403 reply->msg = msg_code;
1404 reply->wparam = msg->wparam;
1405 reply->lparam = msg->lparam;
1408 reply->time = msg->time;
1409 reply->info = msg->info;
1410 reply->hw_id = msg->unique_id;
1413 /* nothing found, clear the hardware queue bits */
1414 clear_queue_bits( thread->queue, clear_bits );
1418 /* increment (or decrement if 'incr' is negative) the queue paint count */
1419 void inc_queue_paint_count( struct thread *thread, int incr )
1421 struct msg_queue *queue = thread->queue;
1425 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1427 if (queue->paint_count)
1428 set_queue_bits( queue, QS_PAINT );
1430 clear_queue_bits( queue, QS_PAINT );
1434 /* remove all messages and timers belonging to a certain window */
1435 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1437 struct msg_queue *queue = thread->queue;
1445 ptr = list_head( &queue->pending_timers );
1448 struct list *next = list_next( &queue->pending_timers, ptr );
1449 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1450 if (timer->win == win) free_timer( queue, timer );
1453 ptr = list_head( &queue->expired_timers );
1456 struct list *next = list_next( &queue->expired_timers, ptr );
1457 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1458 if (timer->win == win) free_timer( queue, timer );
1462 /* remove messages */
1463 for (i = 0; i < NB_MSG_KINDS; i++)
1465 struct list *ptr, *next;
1467 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1469 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1470 if (msg->win == win) remove_queue_message( queue, msg, i );
1474 thread_input_cleanup_window( queue, win );
1477 /* post a message to a window; used by socket handling */
1478 void post_message( user_handle_t win, unsigned int message,
1479 unsigned long wparam, unsigned long lparam )
1481 struct message *msg;
1482 struct thread *thread = get_window_thread( win );
1484 if (!thread) return;
1486 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1488 msg->type = MSG_POSTED;
1489 msg->win = get_user_full_handle( win );
1491 msg->wparam = wparam;
1492 msg->lparam = lparam;
1493 msg->time = get_tick_count();
1501 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1502 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1504 release_object( thread );
1507 /* post a win event */
1508 void post_win_event( struct thread *thread, unsigned int event,
1509 user_handle_t win, unsigned int object_id,
1510 unsigned int child_id, void *hook_proc,
1511 const WCHAR *module, data_size_t module_size,
1514 struct message *msg;
1516 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1518 struct winevent_msg_data *data;
1520 msg->type = MSG_WINEVENT;
1521 msg->win = get_user_full_handle( win );
1523 msg->wparam = object_id;
1524 msg->lparam = child_id;
1525 msg->time = get_tick_count();
1531 if ((data = malloc( sizeof(*data) + module_size )))
1534 data->tid = get_thread_id( current );
1535 data->hook_proc = hook_proc;
1536 memcpy( data + 1, module, module_size );
1539 msg->data_size = sizeof(*data) + module_size;
1541 if (debug_level > 1)
1542 fprintf( stderr, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1543 get_thread_id(thread), event, win, object_id, child_id );
1544 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1545 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1552 /* get the message queue of the current thread */
1553 DECL_HANDLER(get_msg_queue)
1555 struct msg_queue *queue = get_current_queue();
1558 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1562 /* set the file descriptor associated to the current thread queue */
1563 DECL_HANDLER(set_queue_fd)
1565 struct msg_queue *queue = get_current_queue();
1569 if (queue->fd) /* fd can only be set once */
1571 set_error( STATUS_ACCESS_DENIED );
1574 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1576 if ((unix_fd = get_file_unix_fd( file )) != -1)
1578 if ((unix_fd = dup( unix_fd )) != -1)
1579 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1583 release_object( file );
1587 /* set the current message queue wakeup mask */
1588 DECL_HANDLER(set_queue_mask)
1590 struct msg_queue *queue = get_current_queue();
1594 queue->wake_mask = req->wake_mask;
1595 queue->changed_mask = req->changed_mask;
1596 reply->wake_bits = queue->wake_bits;
1597 reply->changed_bits = queue->changed_bits;
1598 if (is_signaled( queue ))
1600 /* if skip wait is set, do what would have been done in the subsequent wait */
1601 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1602 else wake_up( &queue->obj, 0 );
1608 /* get the current message queue status */
1609 DECL_HANDLER(get_queue_status)
1611 struct msg_queue *queue = current->queue;
1614 reply->wake_bits = queue->wake_bits;
1615 reply->changed_bits = queue->changed_bits;
1616 if (req->clear) queue->changed_bits = 0;
1618 else reply->wake_bits = reply->changed_bits = 0;
1622 /* send a message to a thread queue */
1623 DECL_HANDLER(send_message)
1625 struct message *msg;
1626 struct msg_queue *send_queue = get_current_queue();
1627 struct msg_queue *recv_queue = NULL;
1628 struct thread *thread = NULL;
1630 if (!(thread = get_thread_from_id( req->id ))) return;
1632 if (!(recv_queue = thread->queue))
1634 set_error( STATUS_INVALID_PARAMETER );
1635 release_object( thread );
1638 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1640 set_error( STATUS_TIMEOUT );
1641 release_object( thread );
1645 if ((msg = mem_alloc( sizeof(*msg) )))
1647 msg->type = req->type;
1648 msg->win = get_user_full_handle( req->win );
1649 msg->msg = req->msg;
1650 msg->wparam = req->wparam;
1651 msg->lparam = req->lparam;
1652 msg->time = get_tick_count();
1658 msg->data_size = get_req_data_size();
1660 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1663 release_object( thread );
1669 case MSG_OTHER_PROCESS:
1673 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1675 free_message( msg );
1680 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1681 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1684 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1685 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1687 case MSG_HARDWARE: /* should use send_hardware_message instead */
1688 case MSG_CALLBACK_RESULT: /* cannot send this one */
1690 set_error( STATUS_INVALID_PARAMETER );
1695 release_object( thread );
1698 /* send a hardware message to a thread queue */
1699 DECL_HANDLER(send_hardware_message)
1701 struct message *msg;
1702 struct msg_queue *recv_queue = NULL;
1703 struct thread *thread = NULL;
1707 if (!(thread = get_thread_from_id( req->id ))) return;
1710 if (thread && !(recv_queue = thread->queue))
1712 set_error( STATUS_INVALID_PARAMETER );
1713 release_object( thread );
1717 if ((msg = mem_alloc( sizeof(*msg) )))
1719 msg->type = MSG_HARDWARE;
1720 msg->win = get_user_full_handle( req->win );
1721 msg->msg = req->msg;
1722 msg->wparam = req->wparam;
1723 msg->lparam = req->lparam;
1724 msg->time = req->time;
1727 msg->info = req->info;
1731 queue_hardware_message( recv_queue, msg );
1733 if (thread) release_object( thread );
1736 /* post a quit message to the current queue */
1737 DECL_HANDLER(post_quit_message)
1739 struct msg_queue *queue = get_current_queue();
1744 queue->quit_message = 1;
1745 queue->exit_code = req->exit_code;
1746 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1749 /* get a message from the current queue */
1750 DECL_HANDLER(get_message)
1752 struct timer *timer;
1754 struct msg_queue *queue = get_current_queue();
1755 user_handle_t get_win = get_user_full_handle( req->get_win );
1756 unsigned int filter = req->flags >> 16;
1758 reply->active_hooks = get_active_hooks();
1761 queue->last_get_msg = current_time;
1762 if (!filter) filter = QS_ALLINPUT;
1764 /* first check for sent messages */
1765 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1767 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1768 receive_message( queue, msg, reply );
1772 /* clear changed bits so we can wait on them if we don't find a message */
1773 if (filter & QS_POSTMESSAGE)
1775 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1776 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1778 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1779 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1781 /* then check for posted messages */
1782 if ((filter & QS_POSTMESSAGE) &&
1783 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1786 /* only check for quit messages if not posted messages pending.
1787 * note: the quit message isn't filtered */
1788 if (get_quit_message( queue, req->flags, reply ))
1791 /* then check for any raw hardware message */
1792 if ((filter & QS_INPUT) &&
1793 filter_contains_hw_range( req->get_first, req->get_last ) &&
1794 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1797 /* now check for WM_PAINT */
1798 if ((filter & QS_PAINT) &&
1799 queue->paint_count &&
1800 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1801 (reply->win = find_window_to_repaint( get_win, current )))
1803 reply->type = MSG_POSTED;
1804 reply->msg = WM_PAINT;
1809 reply->time = get_tick_count();
1814 /* now check for timer */
1815 if ((filter & QS_TIMER) &&
1816 (timer = find_expired_timer( queue, get_win, req->get_first,
1817 req->get_last, (req->flags & PM_REMOVE) )))
1819 reply->type = MSG_POSTED;
1820 reply->win = timer->win;
1821 reply->msg = timer->msg;
1822 reply->wparam = timer->id;
1823 reply->lparam = timer->lparam;
1826 reply->time = get_tick_count();
1831 set_error( STATUS_PENDING ); /* FIXME */
1835 /* reply to a sent message */
1836 DECL_HANDLER(reply_message)
1838 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1839 else if (current->queue->recv_result)
1840 reply_message( current->queue, req->result, 0, req->remove,
1841 get_req_data(), get_req_data_size() );
1845 /* accept the current hardware message */
1846 DECL_HANDLER(accept_hardware_message)
1849 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1851 set_error( STATUS_ACCESS_DENIED );
1855 /* retrieve the reply for the last message sent */
1856 DECL_HANDLER(get_message_reply)
1858 struct message_result *result;
1860 struct msg_queue *queue = current->queue;
1864 set_error( STATUS_PENDING );
1867 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1869 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1870 if (result->replied || req->cancel)
1872 if (result->replied)
1874 reply->result = result->result;
1875 set_error( result->error );
1878 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1879 set_reply_data_ptr( result->data, data_len );
1880 result->data = NULL;
1881 result->data_size = 0;
1884 remove_result_from_sender( result );
1886 entry = list_head( &queue->send_result );
1887 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1890 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1891 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1895 else set_error( STATUS_ACCESS_DENIED );
1899 /* set a window timer */
1900 DECL_HANDLER(set_win_timer)
1902 struct timer *timer;
1903 struct msg_queue *queue;
1904 struct thread *thread = NULL;
1905 user_handle_t win = 0;
1906 unsigned long id = req->id;
1910 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1912 set_error( STATUS_INVALID_HANDLE );
1915 if (thread->process != current->process)
1917 release_object( thread );
1918 set_error( STATUS_ACCESS_DENIED );
1921 queue = thread->queue;
1922 /* remove it if it existed already */
1923 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1927 queue = get_current_queue();
1928 /* find a free id for it */
1931 id = queue->next_timer_id;
1932 if (++queue->next_timer_id >= 0x10000) queue->next_timer_id = 1;
1934 while (find_timer( queue, 0, req->msg, id ));
1937 if ((timer = set_timer( queue, req->rate )))
1940 timer->msg = req->msg;
1942 timer->lparam = req->lparam;
1945 if (thread) release_object( thread );
1948 /* kill a window timer */
1949 DECL_HANDLER(kill_win_timer)
1951 struct timer *timer;
1952 struct thread *thread;
1953 user_handle_t win = 0;
1957 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1959 set_error( STATUS_INVALID_HANDLE );
1962 if (thread->process != current->process)
1964 release_object( thread );
1965 set_error( STATUS_ACCESS_DENIED );
1969 else thread = (struct thread *)grab_object( current );
1971 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1972 free_timer( thread->queue, timer );
1974 set_error( STATUS_INVALID_PARAMETER );
1976 release_object( thread );
1980 /* attach (or detach) thread inputs */
1981 DECL_HANDLER(attach_thread_input)
1983 struct thread *thread_from = get_thread_from_id( req->tid_from );
1984 struct thread *thread_to = get_thread_from_id( req->tid_to );
1986 if (!thread_from || !thread_to)
1988 if (thread_from) release_object( thread_from );
1989 if (thread_to) release_object( thread_to );
1992 if (thread_from != thread_to)
1994 if (req->attach) attach_thread_input( thread_from, thread_to );
1997 if (thread_from->queue && thread_to->queue &&
1998 thread_from->queue->input == thread_to->queue->input)
1999 detach_thread_input( thread_from );
2001 set_error( STATUS_ACCESS_DENIED );
2004 else set_error( STATUS_ACCESS_DENIED );
2005 release_object( thread_from );
2006 release_object( thread_to );
2010 /* get thread input data */
2011 DECL_HANDLER(get_thread_input)
2013 struct thread *thread = NULL;
2014 struct thread_input *input;
2018 if (!(thread = get_thread_from_id( req->tid ))) return;
2019 input = thread->queue ? thread->queue->input : NULL;
2021 else input = foreground_input; /* get the foreground thread info */
2025 reply->focus = input->focus;
2026 reply->capture = input->capture;
2027 reply->active = input->active;
2028 reply->menu_owner = input->menu_owner;
2029 reply->move_size = input->move_size;
2030 reply->caret = input->caret;
2031 reply->rect = input->caret_rect;
2038 reply->menu_owner = 0;
2039 reply->move_size = 0;
2041 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2043 /* foreground window is active window of foreground thread */
2044 reply->foreground = foreground_input ? foreground_input->active : 0;
2045 if (thread) release_object( thread );
2049 /* retrieve queue keyboard state for a given thread */
2050 DECL_HANDLER(get_key_state)
2052 struct thread *thread;
2053 struct thread_input *input;
2055 if (!(thread = get_thread_from_id( req->tid ))) return;
2056 input = thread->queue ? thread->queue->input : NULL;
2059 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2060 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2062 release_object( thread );
2066 /* set queue keyboard state for a given thread */
2067 DECL_HANDLER(set_key_state)
2069 struct thread *thread = NULL;
2070 struct thread_input *input;
2072 if (!(thread = get_thread_from_id( req->tid ))) return;
2073 input = thread->queue ? thread->queue->input : NULL;
2076 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2077 if (size) memcpy( input->keystate, get_req_data(), size );
2079 release_object( thread );
2083 /* set the system foreground window */
2084 DECL_HANDLER(set_foreground_window)
2086 struct thread *thread;
2087 struct msg_queue *queue = get_current_queue();
2089 reply->previous = foreground_input ? foreground_input->active : 0;
2090 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2091 reply->send_msg_new = FALSE;
2093 if (is_top_level_window( req->handle ) &&
2094 ((thread = get_window_thread( req->handle ))))
2096 foreground_input = thread->queue->input;
2097 reply->send_msg_new = (foreground_input != queue->input);
2098 release_object( thread );
2100 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2104 /* set the current thread focus window */
2105 DECL_HANDLER(set_focus_window)
2107 struct msg_queue *queue = get_current_queue();
2109 reply->previous = 0;
2110 if (queue && check_queue_input_window( queue, req->handle ))
2112 reply->previous = queue->input->focus;
2113 queue->input->focus = get_user_full_handle( req->handle );
2118 /* set the current thread active window */
2119 DECL_HANDLER(set_active_window)
2121 struct msg_queue *queue = get_current_queue();
2123 reply->previous = 0;
2124 if (queue && check_queue_input_window( queue, req->handle ))
2126 if (!req->handle || make_window_active( req->handle ))
2128 reply->previous = queue->input->active;
2129 queue->input->active = get_user_full_handle( req->handle );
2131 else set_error( STATUS_INVALID_HANDLE );
2136 /* set the current thread capture window */
2137 DECL_HANDLER(set_capture_window)
2139 struct msg_queue *queue = get_current_queue();
2141 reply->previous = reply->full_handle = 0;
2142 if (queue && check_queue_input_window( queue, req->handle ))
2144 struct thread_input *input = queue->input;
2146 reply->previous = input->capture;
2147 input->capture = get_user_full_handle( req->handle );
2148 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2149 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2150 reply->full_handle = input->capture;
2155 /* Set the current thread caret window */
2156 DECL_HANDLER(set_caret_window)
2158 struct msg_queue *queue = get_current_queue();
2160 reply->previous = 0;
2161 if (queue && check_queue_input_window( queue, req->handle ))
2163 struct thread_input *input = queue->input;
2165 reply->previous = input->caret;
2166 reply->old_rect = input->caret_rect;
2167 reply->old_hide = input->caret_hide;
2168 reply->old_state = input->caret_state;
2170 set_caret_window( input, get_user_full_handle(req->handle) );
2171 input->caret_rect.right = input->caret_rect.left + req->width;
2172 input->caret_rect.bottom = input->caret_rect.top + req->height;
2177 /* Set the current thread caret information */
2178 DECL_HANDLER(set_caret_info)
2180 struct msg_queue *queue = get_current_queue();
2181 struct thread_input *input;
2184 input = queue->input;
2185 reply->full_handle = input->caret;
2186 reply->old_rect = input->caret_rect;
2187 reply->old_hide = input->caret_hide;
2188 reply->old_state = input->caret_state;
2190 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2192 set_error( STATUS_ACCESS_DENIED );
2195 if (req->flags & SET_CARET_POS)
2197 input->caret_rect.right += req->x - input->caret_rect.left;
2198 input->caret_rect.bottom += req->y - input->caret_rect.top;
2199 input->caret_rect.left = req->x;
2200 input->caret_rect.top = req->y;
2202 if (req->flags & SET_CARET_HIDE)
2204 input->caret_hide += req->hide;
2205 if (input->caret_hide < 0) input->caret_hide = 0;
2207 if (req->flags & SET_CARET_STATE)
2209 if (req->state == -1) input->caret_state = !input->caret_state;
2210 else input->caret_state = !!req->state;
2215 /* get the time of the last input event */
2216 DECL_HANDLER(get_last_input_time)
2218 reply->time = last_input_time;