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 error; /* error code to pass back to sender */
60 unsigned long result; /* reply result */
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 default_get_sd, /* get_sd */
160 default_set_sd, /* set_sd */
161 no_lookup_name, /* lookup_name */
162 no_open_file, /* open_file */
163 no_close_handle, /* close_handle */
164 msg_queue_destroy /* destroy */
167 static const struct fd_ops msg_queue_fd_ops =
169 NULL, /* get_poll_events */
170 msg_queue_poll_event, /* poll_event */
172 NULL, /* get_fd_type */
174 NULL, /* queue_async */
175 NULL, /* reselect_async */
176 NULL /* cancel async */
180 static const struct object_ops thread_input_ops =
182 sizeof(struct thread_input), /* size */
183 thread_input_dump, /* dump */
184 no_add_queue, /* add_queue */
185 NULL, /* remove_queue */
187 NULL, /* satisfied */
188 no_signal, /* signal */
189 no_get_fd, /* get_fd */
190 no_map_access, /* map_access */
191 default_get_sd, /* get_sd */
192 default_set_sd, /* set_sd */
193 no_lookup_name, /* lookup_name */
194 no_open_file, /* open_file */
195 no_close_handle, /* close_handle */
196 thread_input_destroy /* destroy */
199 /* pointer to input structure of foreground thread */
200 static struct thread_input *foreground_input;
201 static unsigned int last_input_time;
203 static void free_message( struct message *msg );
205 /* set the caret window in a given thread input */
206 static void set_caret_window( struct thread_input *input, user_handle_t win )
208 if (!win || win != input->caret)
210 input->caret_rect.left = 0;
211 input->caret_rect.top = 0;
212 input->caret_rect.right = 0;
213 input->caret_rect.bottom = 0;
216 input->caret_hide = 1;
217 input->caret_state = 0;
220 /* create a thread input object */
221 static struct thread_input *create_thread_input( struct thread *thread )
223 struct thread_input *input;
225 if ((input = alloc_object( &thread_input_ops )))
230 input->menu_owner = 0;
231 input->move_size = 0;
232 list_init( &input->msg_list );
233 set_caret_window( input, 0 );
234 memset( input->keystate, 0, sizeof(input->keystate) );
236 if (!(input->desktop = get_thread_desktop( thread, 0 /* FIXME: access rights */ )))
238 release_object( input );
245 /* release the thread input data of a given thread */
246 static inline void release_thread_input( struct thread *thread )
248 struct thread_input *input = thread->queue->input;
251 release_object( input );
252 thread->queue->input = NULL;
255 /* create a message queue object */
256 static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_input *input )
258 struct msg_queue *queue;
261 if (!input && !(input = create_thread_input( thread ))) return NULL;
262 if ((queue = alloc_object( &msg_queue_ops )))
265 queue->wake_bits = 0;
266 queue->wake_mask = 0;
267 queue->changed_bits = 0;
268 queue->changed_mask = 0;
269 queue->paint_count = 0;
270 queue->quit_message = 0;
271 queue->recv_result = NULL;
272 queue->next_timer_id = 0x7fff;
273 queue->timeout = NULL;
274 queue->input = (struct thread_input *)grab_object( input );
276 queue->last_get_msg = current_time;
277 list_init( &queue->send_result );
278 list_init( &queue->callback_result );
279 list_init( &queue->pending_timers );
280 list_init( &queue->expired_timers );
281 for (i = 0; i < NB_MSG_KINDS; i++) list_init( &queue->msg_list[i] );
283 thread->queue = queue;
284 if (!thread->process->queue)
285 thread->process->queue = (struct msg_queue *)grab_object( queue );
287 release_object( input );
291 /* free the message queue of a thread at thread exit */
292 void free_msg_queue( struct thread *thread )
294 struct process *process = thread->process;
296 remove_thread_hooks( thread );
297 if (!thread->queue) return;
298 if (process->queue == thread->queue) /* is it the process main queue? */
300 release_object( process->queue );
301 process->queue = NULL;
302 if (process->idle_event)
304 set_event( process->idle_event );
305 release_object( process->idle_event );
306 process->idle_event = NULL;
309 release_object( thread->queue );
310 thread->queue = NULL;
313 /* get the hook table for a given thread */
314 struct hook_table *get_queue_hooks( struct thread *thread )
316 if (!thread->queue) return NULL;
317 return thread->queue->hooks;
320 /* set the hook table for a given thread, allocating the queue if needed */
321 void set_queue_hooks( struct thread *thread, struct hook_table *hooks )
323 struct msg_queue *queue = thread->queue;
324 if (!queue && !(queue = create_msg_queue( thread, NULL ))) return;
325 if (queue->hooks) release_object( queue->hooks );
326 queue->hooks = hooks;
329 /* check the queue status */
330 static inline int is_signaled( struct msg_queue *queue )
332 return ((queue->wake_bits & queue->wake_mask) || (queue->changed_bits & queue->changed_mask));
335 /* set some queue bits */
336 static inline void set_queue_bits( struct msg_queue *queue, unsigned int bits )
338 queue->wake_bits |= bits;
339 queue->changed_bits |= bits;
340 if (is_signaled( queue )) wake_up( &queue->obj, 0 );
343 /* clear some queue bits */
344 static inline void clear_queue_bits( struct msg_queue *queue, unsigned int bits )
346 queue->wake_bits &= ~bits;
347 queue->changed_bits &= ~bits;
350 /* check whether msg is a keyboard message */
351 static inline int is_keyboard_msg( struct message *msg )
353 return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
356 /* check if message is matched by the filter */
357 static inline int check_msg_filter( unsigned int msg, unsigned int first, unsigned int last )
359 return (msg >= first && msg <= last);
362 /* check whether a message filter contains at least one potential hardware message */
363 static inline int filter_contains_hw_range( unsigned int first, unsigned int last )
365 /* hardware message ranges are (in numerical order):
366 * WM_NCMOUSEFIRST .. WM_NCMOUSELAST
367 * WM_KEYFIRST .. WM_KEYLAST
368 * WM_MOUSEFIRST .. WM_MOUSELAST
370 if (last < WM_NCMOUSEFIRST) return 0;
371 if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
372 if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
373 if (first > WM_MOUSELAST) return 0;
377 /* get the QS_* bit corresponding to a given hardware message */
378 static inline int get_hardware_msg_bit( struct message *msg )
380 if (msg->msg == WM_MOUSEMOVE || msg->msg == WM_NCMOUSEMOVE) return QS_MOUSEMOVE;
381 if (is_keyboard_msg( msg )) return QS_KEY;
382 return QS_MOUSEBUTTON;
385 /* get the current thread queue, creating it if needed */
386 static inline struct msg_queue *get_current_queue(void)
388 struct msg_queue *queue = current->queue;
389 if (!queue) queue = create_msg_queue( current, NULL );
393 /* get a (pseudo-)unique id to tag hardware messages */
394 static inline unsigned int get_unique_id(void)
396 static unsigned int id;
397 if (!++id) id = 1; /* avoid an id of 0 */
401 /* try to merge a message with the last in the list; return 1 if successful */
402 static int merge_message( struct thread_input *input, const struct message *msg )
404 struct message *prev;
405 struct list *ptr = list_tail( &input->msg_list );
408 prev = LIST_ENTRY( ptr, struct message, entry );
409 if (prev->result) return 0;
410 if (prev->win != msg->win) return 0;
411 if (prev->msg != msg->msg) return 0;
412 if (prev->type != msg->type) return 0;
413 /* now we can merge it */
414 prev->wparam = msg->wparam;
415 prev->lparam = msg->lparam;
418 prev->time = msg->time;
419 prev->info = msg->info;
423 /* free a result structure */
424 static void free_result( struct message_result *result )
426 if (result->timeout) remove_timeout_user( result->timeout );
427 free( result->data );
428 if (result->callback_msg) free_message( result->callback_msg );
432 /* remove the result from the sender list it is on */
433 static inline void remove_result_from_sender( struct message_result *result )
435 assert( result->sender );
437 list_remove( &result->sender_entry );
438 result->sender = NULL;
439 if (!result->receiver) free_result( result );
442 /* store the message result in the appropriate structure */
443 static void store_message_result( struct message_result *res, unsigned long result,
446 res->result = result;
451 remove_timeout_user( res->timeout );
456 if (res->callback_msg)
458 /* queue the callback message in the sender queue */
459 struct callback_msg_data *data = res->callback_msg->data;
460 data->result = result;
461 list_add_tail( &res->sender->msg_list[SEND_MESSAGE], &res->callback_msg->entry );
462 set_queue_bits( res->sender, QS_SENDMESSAGE );
463 res->callback_msg = NULL;
464 remove_result_from_sender( res );
468 /* wake sender queue if waiting on this result */
469 if (list_head(&res->sender->send_result) == &res->sender_entry)
470 set_queue_bits( res->sender, QS_SMRESULT );
476 /* free a message when deleting a queue or window */
477 static void free_message( struct message *msg )
479 struct message_result *result = msg->result;
485 result->receiver = NULL;
486 store_message_result( result, 0, STATUS_ACCESS_DENIED /*FIXME*/ );
488 else free_result( result );
494 /* remove (and free) a message from a message list */
495 static void remove_queue_message( struct msg_queue *queue, struct message *msg,
496 enum message_kind kind )
498 list_remove( &msg->entry );
502 if (list_empty( &queue->msg_list[kind] )) clear_queue_bits( queue, QS_SENDMESSAGE );
505 if (list_empty( &queue->msg_list[kind] ) && !queue->quit_message)
506 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
512 /* message timed out without getting a reply */
513 static void result_timeout( void *private )
515 struct message_result *result = private;
517 assert( !result->replied );
519 result->timeout = NULL;
521 if (result->msg) /* not received yet */
523 struct message *msg = result->msg;
527 remove_queue_message( result->receiver, msg, SEND_MESSAGE );
528 result->receiver = NULL;
531 free_result( result );
536 store_message_result( result, 0, STATUS_TIMEOUT );
539 /* allocate and fill a message result structure */
540 static struct message_result *alloc_message_result( struct msg_queue *send_queue,
541 struct msg_queue *recv_queue,
542 struct message *msg, timeout_t timeout )
544 struct message_result *result = mem_alloc( sizeof(*result) );
548 result->sender = send_queue;
549 result->receiver = recv_queue;
552 result->data_size = 0;
553 result->timeout = NULL;
555 if (msg->type == MSG_CALLBACK)
557 struct message *callback_msg = mem_alloc( sizeof(*callback_msg) );
564 callback_msg->type = MSG_CALLBACK_RESULT;
565 callback_msg->win = msg->win;
566 callback_msg->msg = msg->msg;
567 callback_msg->wparam = 0;
568 callback_msg->lparam = 0;
569 callback_msg->time = get_tick_count();
572 callback_msg->info = 0;
573 callback_msg->result = NULL;
574 /* steal the data from the original message */
575 callback_msg->data = msg->data;
576 callback_msg->data_size = msg->data_size;
580 result->callback_msg = callback_msg;
581 list_add_head( &send_queue->callback_result, &result->sender_entry );
585 result->callback_msg = NULL;
586 list_add_head( &send_queue->send_result, &result->sender_entry );
589 if (timeout != TIMEOUT_INFINITE)
590 result->timeout = add_timeout_user( timeout, result_timeout, result );
595 /* receive a message, removing it from the sent queue */
596 static void receive_message( struct msg_queue *queue, struct message *msg,
597 struct get_message_reply *reply )
599 struct message_result *result = msg->result;
601 reply->total = msg->data_size;
602 if (msg->data_size > get_reply_max_size())
604 set_error( STATUS_BUFFER_OVERFLOW );
607 reply->type = msg->type;
608 reply->win = msg->win;
609 reply->msg = msg->msg;
610 reply->wparam = msg->wparam;
611 reply->lparam = msg->lparam;
614 reply->time = msg->time;
615 reply->info = msg->info;
617 if (msg->data) set_reply_data_ptr( msg->data, msg->data_size );
619 list_remove( &msg->entry );
620 /* put the result on the receiver result stack */
624 result->recv_next = queue->recv_result;
625 queue->recv_result = result;
628 if (list_empty( &queue->msg_list[SEND_MESSAGE] )) clear_queue_bits( queue, QS_SENDMESSAGE );
631 /* set the result of the current received message */
632 static void reply_message( struct msg_queue *queue, unsigned long result,
633 unsigned int error, int remove, const void *data, data_size_t len )
635 struct message_result *res = queue->recv_result;
639 queue->recv_result = res->recv_next;
640 res->receiver = NULL;
641 if (!res->sender) /* no one waiting for it */
649 if (len && (res->data = memdup( data, len ))) res->data_size = len;
650 store_message_result( res, result, error );
654 /* retrieve a posted message */
655 static int get_posted_message( struct msg_queue *queue, user_handle_t win,
656 unsigned int first, unsigned int last, unsigned int flags,
657 struct get_message_reply *reply )
661 /* check against the filters */
662 LIST_FOR_EACH_ENTRY( msg, &queue->msg_list[POST_MESSAGE], struct message, entry )
664 if (win && msg->win && msg->win != win && !is_child_window( win, msg->win )) continue;
665 if (!check_msg_filter( msg->msg, first, last )) continue;
666 goto found; /* found one */
670 /* return it to the app */
672 reply->total = msg->data_size;
673 if (msg->data_size > get_reply_max_size())
675 set_error( STATUS_BUFFER_OVERFLOW );
678 reply->type = msg->type;
679 reply->win = msg->win;
680 reply->msg = msg->msg;
681 reply->wparam = msg->wparam;
682 reply->lparam = msg->lparam;
685 reply->time = msg->time;
686 reply->info = msg->info;
688 if (flags & PM_REMOVE)
692 set_reply_data_ptr( msg->data, msg->data_size );
696 remove_queue_message( queue, msg, POST_MESSAGE );
698 else if (msg->data) set_reply_data( msg->data, msg->data_size );
703 static int get_quit_message( struct msg_queue *queue, unsigned int flags,
704 struct get_message_reply *reply )
706 if (queue->quit_message)
709 reply->type = MSG_POSTED;
711 reply->msg = WM_QUIT;
712 reply->wparam = queue->exit_code;
716 reply->time = get_tick_count();
719 if (flags & PM_REMOVE)
721 queue->quit_message = 0;
722 if (list_empty( &queue->msg_list[POST_MESSAGE] ))
723 clear_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
731 /* empty a message list and free all the messages */
732 static void empty_msg_list( struct list *list )
736 while ((ptr = list_head( list )) != NULL)
738 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
739 list_remove( &msg->entry );
744 /* cleanup all pending results when deleting a queue */
745 static void cleanup_results( struct msg_queue *queue )
749 while ((entry = list_head( &queue->send_result )) != NULL)
751 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
754 while ((entry = list_head( &queue->callback_result )) != NULL)
756 remove_result_from_sender( LIST_ENTRY( entry, struct message_result, sender_entry ) );
759 while (queue->recv_result)
760 reply_message( queue, 0, STATUS_ACCESS_DENIED /*FIXME*/, 1, NULL, 0 );
763 /* check if the thread owning the queue is hung (not checking for messages) */
764 static int is_queue_hung( struct msg_queue *queue )
766 struct wait_queue_entry *entry;
768 if (current_time - queue->last_get_msg <= 5 * TICKS_PER_SEC)
769 return 0; /* less than 5 seconds since last get message -> not hung */
771 LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
773 if (entry->thread->queue == queue)
774 return 0; /* thread is waiting on queue -> not hung */
779 static int msg_queue_add_queue( struct object *obj, struct wait_queue_entry *entry )
781 struct msg_queue *queue = (struct msg_queue *)obj;
782 struct process *process = entry->thread->process;
784 /* a thread can only wait on its own queue */
785 if (entry->thread->queue != queue)
787 set_error( STATUS_ACCESS_DENIED );
790 /* if waiting on the main process queue, set the idle event */
791 if (process->queue == queue)
793 if (process->idle_event) set_event( process->idle_event );
795 if (queue->fd && list_empty( &obj->wait_queue )) /* first on the queue */
796 set_fd_events( queue->fd, POLLIN );
797 add_queue( obj, entry );
801 static void msg_queue_remove_queue(struct object *obj, struct wait_queue_entry *entry )
803 struct msg_queue *queue = (struct msg_queue *)obj;
804 struct process *process = entry->thread->process;
806 remove_queue( obj, entry );
807 if (queue->fd && list_empty( &obj->wait_queue )) /* last on the queue is gone */
808 set_fd_events( queue->fd, 0 );
810 assert( entry->thread->queue == queue );
812 /* if waiting on the main process queue, reset the idle event */
813 if (process->queue == queue)
815 if (process->idle_event) reset_event( process->idle_event );
819 static void msg_queue_dump( struct object *obj, int verbose )
821 struct msg_queue *queue = (struct msg_queue *)obj;
822 fprintf( stderr, "Msg queue bits=%x mask=%x\n",
823 queue->wake_bits, queue->wake_mask );
826 static int msg_queue_signaled( struct object *obj, struct thread *thread )
828 struct msg_queue *queue = (struct msg_queue *)obj;
833 if ((ret = check_fd_events( queue->fd, POLLIN )))
834 /* stop waiting on select() if we are signaled */
835 set_fd_events( queue->fd, 0 );
836 else if (!list_empty( &obj->wait_queue ))
837 /* restart waiting on poll() if we are no longer signaled */
838 set_fd_events( queue->fd, POLLIN );
840 return ret || is_signaled( queue );
843 static int msg_queue_satisfied( struct object *obj, struct thread *thread )
845 struct msg_queue *queue = (struct msg_queue *)obj;
846 queue->wake_mask = 0;
847 queue->changed_mask = 0;
848 return 0; /* Not abandoned */
851 static void msg_queue_destroy( struct object *obj )
853 struct msg_queue *queue = (struct msg_queue *)obj;
857 cleanup_results( queue );
858 for (i = 0; i < NB_MSG_KINDS; i++) empty_msg_list( &queue->msg_list[i] );
860 while ((ptr = list_head( &queue->pending_timers )))
862 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
863 list_remove( &timer->entry );
866 while ((ptr = list_head( &queue->expired_timers )))
868 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
869 list_remove( &timer->entry );
872 if (queue->timeout) remove_timeout_user( queue->timeout );
873 if (queue->input) release_object( queue->input );
874 if (queue->hooks) release_object( queue->hooks );
875 if (queue->fd) release_object( queue->fd );
878 static void msg_queue_poll_event( struct fd *fd, int event )
880 struct msg_queue *queue = get_fd_user( fd );
881 assert( queue->obj.ops == &msg_queue_ops );
883 if (event & (POLLERR | POLLHUP)) set_fd_events( fd, -1 );
884 wake_up( &queue->obj, 0 );
887 static void thread_input_dump( struct object *obj, int verbose )
889 struct thread_input *input = (struct thread_input *)obj;
890 fprintf( stderr, "Thread input focus=%p capture=%p active=%p\n",
891 input->focus, input->capture, input->active );
894 static void thread_input_destroy( struct object *obj )
896 struct thread_input *input = (struct thread_input *)obj;
898 if (foreground_input == input) foreground_input = NULL;
899 empty_msg_list( &input->msg_list );
900 if (input->desktop) release_object( input->desktop );
903 /* fix the thread input data when a window is destroyed */
904 static inline void thread_input_cleanup_window( struct msg_queue *queue, user_handle_t window )
906 struct thread_input *input = queue->input;
908 if (window == input->focus) input->focus = 0;
909 if (window == input->capture) input->capture = 0;
910 if (window == input->active) input->active = 0;
911 if (window == input->menu_owner) input->menu_owner = 0;
912 if (window == input->move_size) input->move_size = 0;
913 if (window == input->caret) set_caret_window( input, 0 );
916 /* check if the specified window can be set in the input data of a given queue */
917 static int check_queue_input_window( struct msg_queue *queue, user_handle_t window )
919 struct thread *thread;
922 if (!window) return 1; /* we can always clear the data */
924 if ((thread = get_window_thread( window )))
926 ret = (queue->input == thread->queue->input);
927 if (!ret) set_error( STATUS_ACCESS_DENIED );
928 release_object( thread );
930 else set_error( STATUS_INVALID_HANDLE );
935 /* make sure the specified thread has a queue */
936 int init_thread_queue( struct thread *thread )
938 if (thread->queue) return 1;
939 return (create_msg_queue( thread, NULL ) != NULL);
942 /* attach two thread input data structures */
943 int attach_thread_input( struct thread *thread_from, struct thread *thread_to )
945 struct desktop *desktop;
946 struct thread_input *input;
948 if (!thread_to->queue && !(thread_to->queue = create_msg_queue( thread_to, NULL ))) return 0;
949 if (!(desktop = get_thread_desktop( thread_from, 0 ))) return 0;
950 input = (struct thread_input *)grab_object( thread_to->queue->input );
951 if (input->desktop != desktop)
953 set_error( STATUS_ACCESS_DENIED );
954 release_object( input );
955 release_object( desktop );
958 release_object( desktop );
960 if (thread_from->queue)
962 release_thread_input( thread_from );
963 thread_from->queue->input = input;
967 if (!(thread_from->queue = create_msg_queue( thread_from, input ))) return 0;
969 memset( input->keystate, 0, sizeof(input->keystate) );
973 /* detach two thread input data structures */
974 void detach_thread_input( struct thread *thread_from )
976 struct thread_input *input;
978 if ((input = create_thread_input( thread_from )))
980 release_thread_input( thread_from );
981 thread_from->queue->input = input;
986 /* set the next timer to expire */
987 static void set_next_timer( struct msg_queue *queue )
993 remove_timeout_user( queue->timeout );
994 queue->timeout = NULL;
996 if ((ptr = list_head( &queue->pending_timers )))
998 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
999 queue->timeout = add_timeout_user( timer->when, timer_callback, queue );
1001 /* set/clear QS_TIMER bit */
1002 if (list_empty( &queue->expired_timers ))
1003 clear_queue_bits( queue, QS_TIMER );
1005 set_queue_bits( queue, QS_TIMER );
1008 /* find a timer from its window and id */
1009 static struct timer *find_timer( struct msg_queue *queue, user_handle_t win,
1010 unsigned int msg, unsigned long id )
1014 /* we need to search both lists */
1016 LIST_FOR_EACH( ptr, &queue->pending_timers )
1018 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1019 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1021 LIST_FOR_EACH( ptr, &queue->expired_timers )
1023 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1024 if (timer->win == win && timer->msg == msg && timer->id == id) return timer;
1029 /* callback for the next timer expiration */
1030 static void timer_callback( void *private )
1032 struct msg_queue *queue = private;
1035 queue->timeout = NULL;
1036 /* move on to the next timer */
1037 ptr = list_head( &queue->pending_timers );
1039 list_add_tail( &queue->expired_timers, ptr );
1040 set_next_timer( queue );
1043 /* link a timer at its rightful place in the queue list */
1044 static void link_timer( struct msg_queue *queue, struct timer *timer )
1048 for (ptr = queue->pending_timers.next; ptr != &queue->pending_timers; ptr = ptr->next)
1050 struct timer *t = LIST_ENTRY( ptr, struct timer, entry );
1051 if (t->when >= timer->when) break;
1053 list_add_before( ptr, &timer->entry );
1056 /* remove a timer from the queue timer list and free it */
1057 static void free_timer( struct msg_queue *queue, struct timer *timer )
1059 list_remove( &timer->entry );
1061 set_next_timer( queue );
1064 /* restart an expired timer */
1065 static void restart_timer( struct msg_queue *queue, struct timer *timer )
1067 list_remove( &timer->entry );
1068 while (timer->when <= current_time) timer->when += (timeout_t)timer->rate * 10000;
1069 link_timer( queue, timer );
1070 set_next_timer( queue );
1073 /* find an expired timer matching the filtering parameters */
1074 static struct timer *find_expired_timer( struct msg_queue *queue, user_handle_t win,
1075 unsigned int get_first, unsigned int get_last,
1080 LIST_FOR_EACH( ptr, &queue->expired_timers )
1082 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1083 if (win && timer->win != win) continue;
1084 if (check_msg_filter( timer->msg, get_first, get_last ))
1086 if (remove) restart_timer( queue, timer );
1094 static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
1096 struct timer *timer = mem_alloc( sizeof(*timer) );
1099 timer->rate = max( rate, 1 );
1100 timer->when = current_time + (timeout_t)timer->rate * 10000;
1101 link_timer( queue, timer );
1102 /* check if we replaced the next timer */
1103 if (list_head( &queue->pending_timers ) == &timer->entry) set_next_timer( queue );
1108 /* change the input key state for a given key */
1109 static void set_input_key_state( struct thread_input *input, unsigned char key, int down )
1113 if (!(input->keystate[key] & 0x80)) input->keystate[key] ^= 0x01;
1114 input->keystate[key] |= 0x80;
1116 else input->keystate[key] &= ~0x80;
1119 /* update the input key state for a keyboard message */
1120 static void update_input_key_state( struct thread_input *input, const struct message *msg )
1123 int down = 0, extended;
1127 case WM_LBUTTONDOWN:
1131 set_input_key_state( input, VK_LBUTTON, down );
1133 case WM_MBUTTONDOWN:
1137 set_input_key_state( input, VK_MBUTTON, down );
1139 case WM_RBUTTONDOWN:
1143 set_input_key_state( input, VK_RBUTTON, down );
1145 case WM_XBUTTONDOWN:
1149 if (msg->wparam == XBUTTON1) set_input_key_state( input, VK_XBUTTON1, down );
1150 else if (msg->wparam == XBUTTON2) set_input_key_state( input, VK_XBUTTON2, down );
1158 key = (unsigned char)msg->wparam;
1159 extended = ((msg->lparam >> 16) & KF_EXTENDED) != 0;
1160 set_input_key_state( input, key, down );
1164 set_input_key_state( input, extended ? VK_RSHIFT : VK_LSHIFT, down );
1167 set_input_key_state( input, extended ? VK_RCONTROL : VK_LCONTROL, down );
1170 set_input_key_state( input, extended ? VK_RMENU : VK_LMENU, down );
1174 set_input_key_state( input, VK_CONTROL, down );
1178 set_input_key_state( input, VK_MENU, down );
1182 set_input_key_state( input, VK_SHIFT, down );
1189 /* release the hardware message currently being processed by the given thread */
1190 static void release_hardware_message( struct msg_queue *queue, unsigned int hw_id,
1191 int remove, user_handle_t new_win )
1193 struct thread_input *input = queue->input;
1194 struct message *msg;
1196 LIST_FOR_EACH_ENTRY( msg, &input->msg_list, struct message, entry )
1198 if (msg->unique_id == hw_id) break;
1200 if (&msg->entry == &input->msg_list) return; /* not found */
1202 /* clear the queue bit for that message */
1203 if (remove || new_win)
1205 struct message *other;
1208 clr_bit = get_hardware_msg_bit( msg );
1209 LIST_FOR_EACH_ENTRY( other, &input->msg_list, struct message, entry )
1211 if (other != msg && get_hardware_msg_bit( other ) == clr_bit)
1217 if (clr_bit) clear_queue_bits( queue, clr_bit );
1220 if (new_win) /* set the new window */
1222 struct thread *owner = get_window_thread( new_win );
1226 if (owner->queue->input != input)
1228 list_remove( &msg->entry );
1229 if (msg->msg == WM_MOUSEMOVE && merge_message( owner->queue->input, msg ))
1231 free_message( msg );
1232 release_object( owner );
1235 list_add_tail( &owner->queue->input->msg_list, &msg->entry );
1237 set_queue_bits( owner->queue, get_hardware_msg_bit( msg ));
1239 release_object( owner );
1244 update_input_key_state( input, msg );
1245 list_remove( &msg->entry );
1246 free_message( msg );
1250 /* find the window that should receive a given hardware message */
1251 static user_handle_t find_hardware_message_window( struct thread_input *input, struct message *msg,
1252 unsigned int *msg_code )
1254 user_handle_t win = 0;
1256 *msg_code = msg->msg;
1257 if (is_keyboard_msg( msg ))
1259 if (input && !(win = input->focus))
1261 win = input->active;
1262 if (*msg_code < WM_SYSKEYDOWN) *msg_code += WM_SYSKEYDOWN - WM_KEYDOWN;
1265 else /* mouse message */
1267 if (!input || !(win = input->capture))
1269 if (!(win = msg->win) || !is_window_visible( win ))
1271 if (input) win = window_from_point( input->desktop, msg->x, msg->y );
1278 /* queue a hardware message into a given thread input */
1279 static void queue_hardware_message( struct msg_queue *queue, struct message *msg )
1282 struct thread *thread;
1283 struct thread_input *input = queue ? queue->input : foreground_input;
1284 unsigned int msg_code;
1286 last_input_time = get_tick_count();
1287 win = find_hardware_message_window( input, msg, &msg_code );
1288 if (!win || !(thread = get_window_thread(win)))
1290 if (input) update_input_key_state( input, msg );
1294 input = thread->queue->input;
1296 if (msg->msg == WM_MOUSEMOVE && merge_message( input, msg )) free( msg );
1299 msg->unique_id = 0; /* will be set once we return it to the app */
1300 list_add_tail( &input->msg_list, &msg->entry );
1301 set_queue_bits( thread->queue, get_hardware_msg_bit(msg) );
1303 release_object( thread );
1306 /* check message filter for a hardware message */
1307 static int check_hw_message_filter( user_handle_t win, unsigned int msg_code,
1308 user_handle_t filter_win, unsigned int first, unsigned int last )
1310 if (msg_code >= WM_KEYFIRST && msg_code <= WM_KEYLAST)
1312 /* we can only test the window for a keyboard message since the
1313 * dest window for a mouse message depends on hittest */
1314 if (filter_win && win != filter_win && !is_child_window( filter_win, win ))
1316 /* the message code is final for a keyboard message, we can simply check it */
1317 return check_msg_filter( msg_code, first, last );
1319 else /* mouse message */
1321 /* we need to check all possible values that the message can have in the end */
1323 if (check_msg_filter( msg_code, first, last )) return 1;
1324 if (msg_code == WM_MOUSEWHEEL) return 0; /* no other possible value for this one */
1326 /* all other messages can become non-client messages */
1327 if (check_msg_filter( msg_code + (WM_NCMOUSEFIRST - WM_MOUSEFIRST), first, last )) return 1;
1329 /* clicks can become double-clicks or non-client double-clicks */
1330 if (msg_code == WM_LBUTTONDOWN || msg_code == WM_MBUTTONDOWN ||
1331 msg_code == WM_RBUTTONDOWN || msg_code == WM_XBUTTONDOWN)
1333 if (check_msg_filter( msg_code + (WM_LBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1334 if (check_msg_filter( msg_code + (WM_NCLBUTTONDBLCLK - WM_LBUTTONDOWN), first, last )) return 1;
1341 /* find a hardware message for the given queue */
1342 static int get_hardware_message( struct thread *thread, unsigned int hw_id, user_handle_t filter_win,
1343 unsigned int first, unsigned int last, struct get_message_reply *reply )
1345 struct thread_input *input = thread->queue->input;
1346 struct thread *win_thread;
1349 int clear_bits, got_one = 0;
1350 unsigned int msg_code;
1352 ptr = list_head( &input->msg_list );
1357 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1358 if (msg->unique_id == hw_id) break;
1359 ptr = list_next( &input->msg_list, ptr );
1361 if (!ptr) ptr = list_head( &input->msg_list );
1362 else ptr = list_next( &input->msg_list, ptr ); /* start from the next one */
1365 if (ptr == list_head( &input->msg_list ))
1366 clear_bits = QS_KEY | QS_MOUSEMOVE | QS_MOUSEBUTTON;
1368 clear_bits = 0; /* don't clear bits if we don't go through the whole list */
1372 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1373 ptr = list_next( &input->msg_list, ptr );
1374 win = find_hardware_message_window( input, msg, &msg_code );
1375 if (!win || !(win_thread = get_window_thread( win )))
1377 /* no window at all, remove it */
1378 update_input_key_state( input, msg );
1379 list_remove( &msg->entry );
1380 free_message( msg );
1383 if (win_thread != thread)
1385 if (win_thread->queue->input == input)
1387 /* wake the other thread */
1388 set_queue_bits( win_thread->queue, get_hardware_msg_bit(msg) );
1393 /* for another thread input, drop it */
1394 update_input_key_state( input, msg );
1395 list_remove( &msg->entry );
1396 free_message( msg );
1398 release_object( win_thread );
1401 release_object( win_thread );
1403 /* if we already got a message for another thread, or if it doesn't
1404 * match the filter we skip it */
1405 if (got_one || !check_hw_message_filter( win, msg_code, filter_win, first, last ))
1407 clear_bits &= ~get_hardware_msg_bit( msg );
1410 /* now we can return it */
1411 if (!msg->unique_id) msg->unique_id = get_unique_id();
1412 reply->type = MSG_HARDWARE;
1414 reply->msg = msg_code;
1415 reply->wparam = msg->wparam;
1416 reply->lparam = msg->lparam;
1419 reply->time = msg->time;
1420 reply->info = msg->info;
1421 reply->hw_id = msg->unique_id;
1424 /* nothing found, clear the hardware queue bits */
1425 clear_queue_bits( thread->queue, clear_bits );
1429 /* increment (or decrement if 'incr' is negative) the queue paint count */
1430 void inc_queue_paint_count( struct thread *thread, int incr )
1432 struct msg_queue *queue = thread->queue;
1436 if ((queue->paint_count += incr) < 0) queue->paint_count = 0;
1438 if (queue->paint_count)
1439 set_queue_bits( queue, QS_PAINT );
1441 clear_queue_bits( queue, QS_PAINT );
1445 /* remove all messages and timers belonging to a certain window */
1446 void queue_cleanup_window( struct thread *thread, user_handle_t win )
1448 struct msg_queue *queue = thread->queue;
1456 ptr = list_head( &queue->pending_timers );
1459 struct list *next = list_next( &queue->pending_timers, ptr );
1460 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1461 if (timer->win == win) free_timer( queue, timer );
1464 ptr = list_head( &queue->expired_timers );
1467 struct list *next = list_next( &queue->expired_timers, ptr );
1468 struct timer *timer = LIST_ENTRY( ptr, struct timer, entry );
1469 if (timer->win == win) free_timer( queue, timer );
1473 /* remove messages */
1474 for (i = 0; i < NB_MSG_KINDS; i++)
1476 struct list *ptr, *next;
1478 LIST_FOR_EACH_SAFE( ptr, next, &queue->msg_list[i] )
1480 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1481 if (msg->win == win) remove_queue_message( queue, msg, i );
1485 thread_input_cleanup_window( queue, win );
1488 /* post a message to a window; used by socket handling */
1489 void post_message( user_handle_t win, unsigned int message,
1490 unsigned long wparam, unsigned long lparam )
1492 struct message *msg;
1493 struct thread *thread = get_window_thread( win );
1495 if (!thread) return;
1497 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1499 msg->type = MSG_POSTED;
1500 msg->win = get_user_full_handle( win );
1502 msg->wparam = wparam;
1503 msg->lparam = lparam;
1504 msg->time = get_tick_count();
1512 list_add_tail( &thread->queue->msg_list[POST_MESSAGE], &msg->entry );
1513 set_queue_bits( thread->queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1515 release_object( thread );
1518 /* post a win event */
1519 void post_win_event( struct thread *thread, unsigned int event,
1520 user_handle_t win, unsigned int object_id,
1521 unsigned int child_id, void *hook_proc,
1522 const WCHAR *module, data_size_t module_size,
1525 struct message *msg;
1527 if (thread->queue && (msg = mem_alloc( sizeof(*msg) )))
1529 struct winevent_msg_data *data;
1531 msg->type = MSG_WINEVENT;
1532 msg->win = get_user_full_handle( win );
1534 msg->wparam = object_id;
1535 msg->lparam = child_id;
1536 msg->time = get_tick_count();
1542 if ((data = malloc( sizeof(*data) + module_size )))
1545 data->tid = get_thread_id( current );
1546 data->hook_proc = hook_proc;
1547 memcpy( data + 1, module, module_size );
1550 msg->data_size = sizeof(*data) + module_size;
1552 if (debug_level > 1)
1553 fprintf( stderr, "post_win_event: tid %04x event %04x win %p object_id %d child_id %d\n",
1554 get_thread_id(thread), event, win, object_id, child_id );
1555 list_add_tail( &thread->queue->msg_list[SEND_MESSAGE], &msg->entry );
1556 set_queue_bits( thread->queue, QS_SENDMESSAGE );
1563 /* get the message queue of the current thread */
1564 DECL_HANDLER(get_msg_queue)
1566 struct msg_queue *queue = get_current_queue();
1569 if (queue) reply->handle = alloc_handle( current->process, queue, SYNCHRONIZE, 0 );
1573 /* set the file descriptor associated to the current thread queue */
1574 DECL_HANDLER(set_queue_fd)
1576 struct msg_queue *queue = get_current_queue();
1580 if (queue->fd) /* fd can only be set once */
1582 set_error( STATUS_ACCESS_DENIED );
1585 if (!(file = get_file_obj( current->process, req->handle, SYNCHRONIZE ))) return;
1587 if ((unix_fd = get_file_unix_fd( file )) != -1)
1589 if ((unix_fd = dup( unix_fd )) != -1)
1590 queue->fd = create_anonymous_fd( &msg_queue_fd_ops, unix_fd, &queue->obj, 0 );
1594 release_object( file );
1598 /* set the current message queue wakeup mask */
1599 DECL_HANDLER(set_queue_mask)
1601 struct msg_queue *queue = get_current_queue();
1605 queue->wake_mask = req->wake_mask;
1606 queue->changed_mask = req->changed_mask;
1607 reply->wake_bits = queue->wake_bits;
1608 reply->changed_bits = queue->changed_bits;
1609 if (is_signaled( queue ))
1611 /* if skip wait is set, do what would have been done in the subsequent wait */
1612 if (req->skip_wait) msg_queue_satisfied( &queue->obj, current );
1613 else wake_up( &queue->obj, 0 );
1619 /* get the current message queue status */
1620 DECL_HANDLER(get_queue_status)
1622 struct msg_queue *queue = current->queue;
1625 reply->wake_bits = queue->wake_bits;
1626 reply->changed_bits = queue->changed_bits;
1627 if (req->clear) queue->changed_bits = 0;
1629 else reply->wake_bits = reply->changed_bits = 0;
1633 /* send a message to a thread queue */
1634 DECL_HANDLER(send_message)
1636 struct message *msg;
1637 struct msg_queue *send_queue = get_current_queue();
1638 struct msg_queue *recv_queue = NULL;
1639 struct thread *thread = NULL;
1641 if (!(thread = get_thread_from_id( req->id ))) return;
1643 if (!(recv_queue = thread->queue))
1645 set_error( STATUS_INVALID_PARAMETER );
1646 release_object( thread );
1649 if ((req->flags & SEND_MSG_ABORT_IF_HUNG) && is_queue_hung(recv_queue))
1651 set_error( STATUS_TIMEOUT );
1652 release_object( thread );
1656 if ((msg = mem_alloc( sizeof(*msg) )))
1658 msg->type = req->type;
1659 msg->win = get_user_full_handle( req->win );
1660 msg->msg = req->msg;
1661 msg->wparam = req->wparam;
1662 msg->lparam = req->lparam;
1663 msg->time = get_tick_count();
1669 msg->data_size = get_req_data_size();
1671 if (msg->data_size && !(msg->data = memdup( get_req_data(), msg->data_size )))
1674 release_object( thread );
1680 case MSG_OTHER_PROCESS:
1684 if (!(msg->result = alloc_message_result( send_queue, recv_queue, msg, req->timeout )))
1686 free_message( msg );
1691 list_add_tail( &recv_queue->msg_list[SEND_MESSAGE], &msg->entry );
1692 set_queue_bits( recv_queue, QS_SENDMESSAGE );
1695 list_add_tail( &recv_queue->msg_list[POST_MESSAGE], &msg->entry );
1696 set_queue_bits( recv_queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1698 case MSG_HARDWARE: /* should use send_hardware_message instead */
1699 case MSG_CALLBACK_RESULT: /* cannot send this one */
1701 set_error( STATUS_INVALID_PARAMETER );
1706 release_object( thread );
1709 /* send a hardware message to a thread queue */
1710 DECL_HANDLER(send_hardware_message)
1712 struct message *msg;
1713 struct msg_queue *recv_queue = NULL;
1714 struct thread *thread = NULL;
1718 if (!(thread = get_thread_from_id( req->id ))) return;
1721 if (thread && !(recv_queue = thread->queue))
1723 set_error( STATUS_INVALID_PARAMETER );
1724 release_object( thread );
1728 if ((msg = mem_alloc( sizeof(*msg) )))
1730 msg->type = MSG_HARDWARE;
1731 msg->win = get_user_full_handle( req->win );
1732 msg->msg = req->msg;
1733 msg->wparam = req->wparam;
1734 msg->lparam = req->lparam;
1735 msg->time = req->time;
1738 msg->info = req->info;
1742 queue_hardware_message( recv_queue, msg );
1744 if (thread) release_object( thread );
1747 /* post a quit message to the current queue */
1748 DECL_HANDLER(post_quit_message)
1750 struct msg_queue *queue = get_current_queue();
1755 queue->quit_message = 1;
1756 queue->exit_code = req->exit_code;
1757 set_queue_bits( queue, QS_POSTMESSAGE|QS_ALLPOSTMESSAGE );
1760 /* get a message from the current queue */
1761 DECL_HANDLER(get_message)
1763 struct timer *timer;
1765 struct msg_queue *queue = get_current_queue();
1766 user_handle_t get_win = get_user_full_handle( req->get_win );
1767 unsigned int filter = req->flags >> 16;
1769 reply->active_hooks = get_active_hooks();
1772 queue->last_get_msg = current_time;
1773 if (!filter) filter = QS_ALLINPUT;
1775 /* first check for sent messages */
1776 if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))
1778 struct message *msg = LIST_ENTRY( ptr, struct message, entry );
1779 receive_message( queue, msg, reply );
1783 /* clear changed bits so we can wait on them if we don't find a message */
1784 if (filter & QS_POSTMESSAGE)
1786 queue->changed_bits &= ~(QS_POSTMESSAGE | QS_HOTKEY | QS_TIMER);
1787 if (req->get_first == 0 && req->get_last == ~0U) queue->changed_bits &= ~QS_ALLPOSTMESSAGE;
1789 if (filter & QS_INPUT) queue->changed_bits &= ~QS_INPUT;
1790 if (filter & QS_PAINT) queue->changed_bits &= ~QS_PAINT;
1792 /* then check for posted messages */
1793 if ((filter & QS_POSTMESSAGE) &&
1794 get_posted_message( queue, get_win, req->get_first, req->get_last, req->flags, reply ))
1797 /* only check for quit messages if not posted messages pending.
1798 * note: the quit message isn't filtered */
1799 if (get_quit_message( queue, req->flags, reply ))
1802 /* then check for any raw hardware message */
1803 if ((filter & QS_INPUT) &&
1804 filter_contains_hw_range( req->get_first, req->get_last ) &&
1805 get_hardware_message( current, req->hw_id, get_win, req->get_first, req->get_last, reply ))
1808 /* now check for WM_PAINT */
1809 if ((filter & QS_PAINT) &&
1810 queue->paint_count &&
1811 check_msg_filter( WM_PAINT, req->get_first, req->get_last ) &&
1812 (reply->win = find_window_to_repaint( get_win, current )))
1814 reply->type = MSG_POSTED;
1815 reply->msg = WM_PAINT;
1820 reply->time = get_tick_count();
1825 /* now check for timer */
1826 if ((filter & QS_TIMER) &&
1827 (timer = find_expired_timer( queue, get_win, req->get_first,
1828 req->get_last, (req->flags & PM_REMOVE) )))
1830 reply->type = MSG_POSTED;
1831 reply->win = timer->win;
1832 reply->msg = timer->msg;
1833 reply->wparam = timer->id;
1834 reply->lparam = timer->lparam;
1837 reply->time = get_tick_count();
1842 queue->wake_mask = req->wake_mask;
1843 queue->changed_mask = req->changed_mask;
1844 set_error( STATUS_PENDING ); /* FIXME */
1848 /* reply to a sent message */
1849 DECL_HANDLER(reply_message)
1851 if (!current->queue) set_error( STATUS_ACCESS_DENIED );
1852 else if (current->queue->recv_result)
1853 reply_message( current->queue, req->result, 0, req->remove,
1854 get_req_data(), get_req_data_size() );
1858 /* accept the current hardware message */
1859 DECL_HANDLER(accept_hardware_message)
1862 release_hardware_message( current->queue, req->hw_id, req->remove, req->new_win );
1864 set_error( STATUS_ACCESS_DENIED );
1868 /* retrieve the reply for the last message sent */
1869 DECL_HANDLER(get_message_reply)
1871 struct message_result *result;
1873 struct msg_queue *queue = current->queue;
1877 set_error( STATUS_PENDING );
1880 if (!(entry = list_head( &queue->send_result ))) return; /* no reply ready */
1882 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1883 if (result->replied || req->cancel)
1885 if (result->replied)
1887 reply->result = result->result;
1888 set_error( result->error );
1891 data_size_t data_len = min( result->data_size, get_reply_max_size() );
1892 set_reply_data_ptr( result->data, data_len );
1893 result->data = NULL;
1894 result->data_size = 0;
1897 remove_result_from_sender( result );
1899 entry = list_head( &queue->send_result );
1900 if (!entry) clear_queue_bits( queue, QS_SMRESULT );
1903 result = LIST_ENTRY( entry, struct message_result, sender_entry );
1904 if (!result->replied) clear_queue_bits( queue, QS_SMRESULT );
1908 else set_error( STATUS_ACCESS_DENIED );
1912 /* set a window timer */
1913 DECL_HANDLER(set_win_timer)
1915 struct timer *timer;
1916 struct msg_queue *queue;
1917 struct thread *thread = NULL;
1918 user_handle_t win = 0;
1919 unsigned long id = req->id;
1923 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1925 set_error( STATUS_INVALID_HANDLE );
1928 if (thread->process != current->process)
1930 release_object( thread );
1931 set_error( STATUS_ACCESS_DENIED );
1934 queue = thread->queue;
1935 /* remove it if it existed already */
1936 if ((timer = find_timer( queue, win, req->msg, id ))) free_timer( queue, timer );
1940 queue = get_current_queue();
1941 /* look for a timer with this id */
1942 if (id && (timer = find_timer( queue, NULL, req->msg, id )))
1944 /* free and reuse id */
1945 free_timer( queue, timer );
1949 /* find a free id for it */
1952 id = queue->next_timer_id;
1953 if (--queue->next_timer_id <= 0x100) queue->next_timer_id = 0x7fff;
1955 while (find_timer( queue, 0, req->msg, id ));
1959 if ((timer = set_timer( queue, req->rate )))
1962 timer->msg = req->msg;
1964 timer->lparam = req->lparam;
1967 if (thread) release_object( thread );
1970 /* kill a window timer */
1971 DECL_HANDLER(kill_win_timer)
1973 struct timer *timer;
1974 struct thread *thread;
1975 user_handle_t win = 0;
1979 if (!(win = get_user_full_handle( req->win )) || !(thread = get_window_thread( win )))
1981 set_error( STATUS_INVALID_HANDLE );
1984 if (thread->process != current->process)
1986 release_object( thread );
1987 set_error( STATUS_ACCESS_DENIED );
1991 else thread = (struct thread *)grab_object( current );
1993 if (thread->queue && (timer = find_timer( thread->queue, win, req->msg, req->id )))
1994 free_timer( thread->queue, timer );
1996 set_error( STATUS_INVALID_PARAMETER );
1998 release_object( thread );
2002 /* attach (or detach) thread inputs */
2003 DECL_HANDLER(attach_thread_input)
2005 struct thread *thread_from = get_thread_from_id( req->tid_from );
2006 struct thread *thread_to = get_thread_from_id( req->tid_to );
2008 if (!thread_from || !thread_to)
2010 if (thread_from) release_object( thread_from );
2011 if (thread_to) release_object( thread_to );
2014 if (thread_from != thread_to)
2016 if (req->attach) attach_thread_input( thread_from, thread_to );
2019 if (thread_from->queue && thread_to->queue &&
2020 thread_from->queue->input == thread_to->queue->input)
2021 detach_thread_input( thread_from );
2023 set_error( STATUS_ACCESS_DENIED );
2026 else set_error( STATUS_ACCESS_DENIED );
2027 release_object( thread_from );
2028 release_object( thread_to );
2032 /* get thread input data */
2033 DECL_HANDLER(get_thread_input)
2035 struct thread *thread = NULL;
2036 struct thread_input *input;
2040 if (!(thread = get_thread_from_id( req->tid ))) return;
2041 input = thread->queue ? thread->queue->input : NULL;
2043 else input = foreground_input; /* get the foreground thread info */
2047 reply->focus = input->focus;
2048 reply->capture = input->capture;
2049 reply->active = input->active;
2050 reply->menu_owner = input->menu_owner;
2051 reply->move_size = input->move_size;
2052 reply->caret = input->caret;
2053 reply->rect = input->caret_rect;
2060 reply->menu_owner = 0;
2061 reply->move_size = 0;
2063 reply->rect.left = reply->rect.top = reply->rect.right = reply->rect.bottom = 0;
2065 /* foreground window is active window of foreground thread */
2066 reply->foreground = foreground_input ? foreground_input->active : 0;
2067 if (thread) release_object( thread );
2071 /* retrieve queue keyboard state for a given thread */
2072 DECL_HANDLER(get_key_state)
2074 struct thread *thread;
2075 struct thread_input *input;
2077 if (!(thread = get_thread_from_id( req->tid ))) return;
2078 input = thread->queue ? thread->queue->input : NULL;
2081 if (req->key >= 0) reply->state = input->keystate[req->key & 0xff];
2082 set_reply_data( input->keystate, min( get_reply_max_size(), sizeof(input->keystate) ));
2084 release_object( thread );
2088 /* set queue keyboard state for a given thread */
2089 DECL_HANDLER(set_key_state)
2091 struct thread *thread = NULL;
2092 struct thread_input *input;
2094 if (!(thread = get_thread_from_id( req->tid ))) return;
2095 input = thread->queue ? thread->queue->input : NULL;
2098 data_size_t size = min( sizeof(input->keystate), get_req_data_size() );
2099 if (size) memcpy( input->keystate, get_req_data(), size );
2101 release_object( thread );
2105 /* set the system foreground window */
2106 DECL_HANDLER(set_foreground_window)
2108 struct thread *thread;
2109 struct msg_queue *queue = get_current_queue();
2111 reply->previous = foreground_input ? foreground_input->active : 0;
2112 reply->send_msg_old = (reply->previous && foreground_input != queue->input);
2113 reply->send_msg_new = FALSE;
2115 if (is_top_level_window( req->handle ) &&
2116 ((thread = get_window_thread( req->handle ))))
2118 foreground_input = thread->queue->input;
2119 reply->send_msg_new = (foreground_input != queue->input);
2120 release_object( thread );
2122 else set_win32_error( ERROR_INVALID_WINDOW_HANDLE );
2126 /* set the current thread focus window */
2127 DECL_HANDLER(set_focus_window)
2129 struct msg_queue *queue = get_current_queue();
2131 reply->previous = 0;
2132 if (queue && check_queue_input_window( queue, req->handle ))
2134 reply->previous = queue->input->focus;
2135 queue->input->focus = get_user_full_handle( req->handle );
2140 /* set the current thread active window */
2141 DECL_HANDLER(set_active_window)
2143 struct msg_queue *queue = get_current_queue();
2145 reply->previous = 0;
2146 if (queue && check_queue_input_window( queue, req->handle ))
2148 if (!req->handle || make_window_active( req->handle ))
2150 reply->previous = queue->input->active;
2151 queue->input->active = get_user_full_handle( req->handle );
2153 else set_error( STATUS_INVALID_HANDLE );
2158 /* set the current thread capture window */
2159 DECL_HANDLER(set_capture_window)
2161 struct msg_queue *queue = get_current_queue();
2163 reply->previous = reply->full_handle = 0;
2164 if (queue && check_queue_input_window( queue, req->handle ))
2166 struct thread_input *input = queue->input;
2168 reply->previous = input->capture;
2169 input->capture = get_user_full_handle( req->handle );
2170 input->menu_owner = (req->flags & CAPTURE_MENU) ? input->capture : 0;
2171 input->move_size = (req->flags & CAPTURE_MOVESIZE) ? input->capture : 0;
2172 reply->full_handle = input->capture;
2177 /* Set the current thread caret window */
2178 DECL_HANDLER(set_caret_window)
2180 struct msg_queue *queue = get_current_queue();
2182 reply->previous = 0;
2183 if (queue && check_queue_input_window( queue, req->handle ))
2185 struct thread_input *input = queue->input;
2187 reply->previous = input->caret;
2188 reply->old_rect = input->caret_rect;
2189 reply->old_hide = input->caret_hide;
2190 reply->old_state = input->caret_state;
2192 set_caret_window( input, get_user_full_handle(req->handle) );
2193 input->caret_rect.right = input->caret_rect.left + req->width;
2194 input->caret_rect.bottom = input->caret_rect.top + req->height;
2199 /* Set the current thread caret information */
2200 DECL_HANDLER(set_caret_info)
2202 struct msg_queue *queue = get_current_queue();
2203 struct thread_input *input;
2206 input = queue->input;
2207 reply->full_handle = input->caret;
2208 reply->old_rect = input->caret_rect;
2209 reply->old_hide = input->caret_hide;
2210 reply->old_state = input->caret_state;
2212 if (req->handle && get_user_full_handle(req->handle) != input->caret)
2214 set_error( STATUS_ACCESS_DENIED );
2217 if (req->flags & SET_CARET_POS)
2219 input->caret_rect.right += req->x - input->caret_rect.left;
2220 input->caret_rect.bottom += req->y - input->caret_rect.top;
2221 input->caret_rect.left = req->x;
2222 input->caret_rect.top = req->y;
2224 if (req->flags & SET_CARET_HIDE)
2226 input->caret_hide += req->hide;
2227 if (input->caret_hide < 0) input->caret_hide = 0;
2229 if (req->flags & SET_CARET_STATE)
2231 if (req->state == -1) input->caret_state = !input->caret_state;
2232 else input->caret_state = !!req->state;
2237 /* get the time of the last input event */
2238 DECL_HANDLER(get_last_input_time)
2240 reply->time = last_input_time;